Method of creating ranked neighbouring cell list

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to mobile communication. For each of a plurality of neighbouring cells, a value of a first component is assigned, depending on whether or not a base station can detect signals transmitted from said neighbouring cell. A value of a second component is assigned, depending on a history of successful or unsuccessful handover attempts to said neighbouring cell. The values of the first and second components are combined to form a weighting parameter, for use in determining a handover priority to be given to said neighbouring cell in the neighbouring cell list.

EFFECT: high probability of successful handover of a user device without the need to perform an excessive number of measurements for a large number of neighbouring cells; forming a list of neighbouring cells intended for use in a base station of a cellular communication network.

10 cl, 6 dwg

The technical field to which the invention relates.

The present invention relates to a mobile communication network and, in particular, to methods and systems for creating a cellular base station of its own lists of neighboring cells.

The level of technology

The prior art installation of femtocells access points in the building with the aim, among other advantages provide extended coverage for users of cellular communication network. When the registered user's device is within coverage of femtocells access points, it can install this access point connection, and the connection point of access to the underlying network of the cellular network is installed, for example, at a predetermined broadband Internet connection. When the user leaves the coverage area of femtocells access points, can be performed handover connection in other femtocells or macro-cellular base station cellular network.

The prior art also known establishment of a network of such femtocells access points.

One drawback of all cellular networks is that for each base station, you must create a list of neighbor juice so that each user's device in a cell served by the base station, knew about neighboring cells, with the spruce enable transition, if necessary, in one of these neighboring cells.

In the case of femtocells access points, each of femtocells access point is responsible for creating its own list of neighbor hundred thus, to ensure a high probability of a successful handover user devices without having these devices for a user to perform an excessive number of measurements for a large number of neighboring cells.

In the case of a network of femtocells access points, for example in the same building or on a relatively small area, each of femtocells access point you want to create a list of neighbor cells, allowing the device user to receive an acceptable quality signal throughout the intended coverage area.

Disclosure of inventions

In accordance with aspects of the invention the above problem is solved by generating a list of neighbor cells, which includes other femtocells access points within the network. Because the probability that some of the other femtocells access points will share the channel and scrambling code, it is proposed a mechanism for the prioritisation of handover appointed by the neighboring satam in the list of neighbor cells.

In accordance with the first variant of the present invention proposes a method of forming the list of neighbor cells intended for use in a base station and a cellular communication network, including for each of a large number of neighbouring cell: assigning the values of the first components depending on whether the base station to detect the signals transmitted from the specified neighboring cells; assigning the value of the second components based on retrospective data about successful or unsuccessful attempts handover specified in the neighboring cell; and combining values of the first and second component with the formation of the weighting parameter, intended for use in determining priority handover assigned to the specified neighboring cell in the list of neighbor cells.

Thus, the priority of handover assigned to a specific neighboring cell may be determined based on whether the base station to detect the signals transmitted from the neighboring cell, and based on historical data about successful or unsuccessful attempts handover in the given neighboring cell.

In accordance with other aspects of the present invention offers the base station and the network of these base stations.

Brief description of drawings

For a more complete disclosure and description of the implementation of the present invention further in the example described with reference to the accompanying drawings, in which:

figure 1 represents a building in the area of the cellular communication network;</>

figure 2 is a diagram of the multiple femtocells access points in the building;

figure 3 is a diagram of femtocells access points in a more General communication network;

figure 4 is a block diagram of the first procedure in accordance with the present invention;

figure 5 is a block diagram of a detail illustrating a part of the procedure shown in figure 4;

Fig.6 is a form of mobility tables generated in the process shown in figure 5.

The implementation of the invention

Figure 1 shows a building 10, located within the access zone macro-cellular base station 12 of a cellular communication network. Thus, such devices as mobile phones 14, laptop computers, etc. that are located near building 10, can use the services of the cellular network through a connection with a cellular network through macro-cellular base station 12. Herein the invention is described with reference to an implementation option, in which the cellular communication network is a UMTS network (Universal Mobile Telecommunications System universal mobile telecommunications system). In this case, the network operator typically also has another mobile communication network, e.g. a GSM network, which provides coverage in the same coverage area. In this case, the data network in some way connected m is waiting for you so, the device user with the ability to work on both networks, has a smooth implementation of handover between these networks through handover between different radio access systems (inter-RAT (Radio Access Technology) handover).

It is known that the cellular coverage in the building may be weak, which leads to the unavailability of the service or the need for the user devices to transmit signals with high transmission power, which reduces the operating time of the battery.

Therefore, in building 10 deployed femtocells access points, designed to make the user's device, located in the building, could at least use the services of the cellular network through a connection with a cellular network through one of the femtocells access points.

Although the invention is described herein with reference to the use of femtocells access points in the building, which is expected to move users, such as office building, educational institution, or a shopping centre, it is obvious that the invention can be applied in other cases. For example, the invention can also be applied for use of femtocells access points outside buildings, in particular in areas in which there is common ownership or management Terry is Oria, where the expected movement of users.

Figure 2 shows a diagram of a single level 16 on the inside of the building 10. In this example, the building 10 is an office building, and the whole level 16 is occupied by a single organization. On the basis of the number of expected users at level 16 in any time you use a suitable number of femtocells 18 points of access. Eight of femtocells access points, shown in figure 2, labeled AP1-AP8. These femtocells access points form a group of the organization. In other words, they will be managed by a single organization, and they are designed so that each device of the user permitted registration in one of the femtocells access points may be recorded in any of them, so femtocells access points within groups can organize themselves to improve the overall quality of service.

Femtocells point 18 access are located in suitable places. For example, femtocells access point can be located near the point of entrance/exit, or at each point of entry/exit, so that users within the building or leaving him for as long as possible to remain connected with one of the femtocells access points. In addition, femtocells access points should be distributed in space so that any UserB can space had the opportunity to connect with one of femtocells access points.

Figure 3 shows a diagram illustrating a network connection of femtocells access points. More specifically, all femtocells point 18 of the access group are connected with a local area network (LAN), a server 20 local area network, which also has a connection with global computer network 22, in particular with public global computer network such as the Internet. Femtocells point 18 of the access is made with the possibility of connection to the global computer network 22 to the underlying network 24 of the cellular communication network. Basic network 24 includes a node 26 management, which need monitoring and management of femtocells 18 points of access.

In one embodiment of the invention, the node 26 control extends to all femtocells point 18 of the access group relevant information about the group, including the IDs of all femtocells access points in the group and their main parameters of the radio communication, for example, the absolute channel number of the radio communication system UTRA (UARFCN, UTRA Absolute RF Channel Number) and the scrambling code (SC), area code (LAC, Location Area Code) and cell ID) based positioning, as well as the initial power levels.

Thus, the invention described herein with reference to its use in an access point operating according to the existing art is hartam cellular, established by the standardization organization 3GPP. However, it is clear that the same methods can be used in networks in which all apply existing and emerging technology, in which the original power in the downlink (access point or base station can be set on the basis of currently available time information.

In this embodiment, femtocells access point can switch to monitoring downlink, in which it can detect signals transmitted by other femtocells access points to obtain identifiers of neighboring femtocells access points. Thus, by comparing detektirovanie non UARFCN code or scrambling code and LAC or cell ID transmitted by each of femtocells access point information received from the node 26 management of femtocells point 18 access can automatically fill in the table of neighboring access points This table can be used in the future in the case of the implementation of handovers for local mobility. Thus, within the group provides full support for mobility. Selecting cells with other femtocells access points is achieved through broadcast each access point, the relevant information is on the carrier and code scrambling. Handover from one of femtocells access point to another can be accomplished due to the fact that each of femtocells access point has a complete map of its neighboring femtocells access points, including their identity, and therefore can transmit the command handover, which clearly indicates the specific femtocells access point. Provides full support for mobile calls in networks with circuit-switched networks packet-switched networks, and networks with different radio access systems (Multi-RAB), as well as support handover between femtocells access points with the same frequency (intra-frequency) and handover between femtocells access points with different frequencies (inter-frequency).

In addition, each of femtocells access point receives periodic messages about the measurement from the user devices with which connection is established, the data messages indicate the signal strength of the neighboring femtocells access points with the same frequency. In addition, each of femtocells access point transmits messages control measurements in a user's device with which the connection is established and working in compression mode, requesting periodic measurements of their neighboring femtocells access points with different frequency.

In addition, each of femtocells access point is performed with the communication with other femtocells access point via a local area network, with which they are connected.

For the implementation of handover required to obtain each user's device the required level of quality of service, each of femtocells access point, you must create multiple lists of neighboring cells. More specifically, in each of femtocells access point, you must create a list of neighboring cells for user devices that are in standby mode (i.e. no active calls) and in connected mode (i.e. have at least one active call), and you must also create a separate list of neighboring cells for the honeycomb with the same frequency (i.e. honeycomb, operating on the same frequency as the first cell), cell with a different frequency (i.e. honeycomb, operating at a frequency different from the frequency of the first cell) and cells with different systems of radio access networks (i.e. networks that use a radio access system, different from the first cell, for example a honeycomb GSM system when the first cell is a cell of the UMTS system).

In this embodiment of the invention femtocells access point supports mobility in idle mode between different groups of the organization, but supports mobility in connected mode only within one group of the organization.

Figure 4 shows a block diagram illustrating generally carried out in femtocells access point of proceed the ru creating lists neighbouring hundred of this point. This procedure is performed preferably every time you turn femtocells access points. In the future, this procedure may be re-executed whenever it is possible to obtain other results, for example, when femtocells access point detects the signals from the new nearby femtocells access points.

Figure 4 the process begins at step 40. As part of the startup procedure of femtocells access point has already chosen a carrier, on which it will operate, and the primary scrambling code, which it will use to identify the transmitted data received

In addition, femtocells access point receives information in the form of a master table relationships (MRT, Master Relationship Table). This table includes information about each of femtocells access point in the group, namely: a unique cell identity (cell ID) of femtocells access points, a group identifier (group ID) of femtocells access points, a frequency and a primary scrambling code selected femtocells access point, a cell identity, primary scrambling code, the number UARFCN (UTRA Absolute RF Channel Number, the absolute channel number of the radio communication system UTRA), the adjustment of the transmission power of the CPICH channel (CPICH TX power adjustment) and the transmit power of the CPICH channel (CPICH TX power) of other femtocells access points, as well as macro-level basic R is distancei nodeBs, detected this femtocells access point, and information about sauté with high detectionin signal level.

Each time when you first turn on femtocells access points, it broadcasts a message to indicate that it is now a part of the network. Then arbitrary femtocells access point sends her a copy of the table MRT to start automatic configuration.

New femtocells access points are always added to the table MRT with a specific time stamp (time stamp of creation). The priority of femtocells access points sometimes determine the largest time stamp, as described below.

Every time you change femtocells access point configuration (when selecting a new frequency and/or scrambling code or update of the mobility tables), it re-transmits the MRT table with the specified changes on the local area network. In addition, the control system can remove femtocells access points from the table MRT, if they seem to be inactive.

In addition, femtocells access point receives information obtained in the monitoring mode downlink (DLMM, downlink monitor mode). Mode DLMM femtocells access point can detect signals transmitted by other base stations, and can get the ID of each cell, the cat is Roy it detects the signals, as well as additional information, for example, the transmit power of each cell.

In step 42 of femtocells access point creates lists of neighboring femtocells access points. This process is shown in detail on figure 5.

In the process of figure 5 in step 44 of femtocells access point creates its list of neighboring femtocells access points in the standby mode. One best solution to prevent failure of the coating (i.e. the situation when the UE device user can detect two femtocells access points, but the data femtocells access points are not able to detect each other) is to transfer each of femtocells access point in their lists of neighbouring hundred of all external and internal scrambling codes, which are found in the main table relationships (MRT). External scrambling code is a code that can appear in the lists of neighboring hundred macro-level base stations, and the internal scrambling code is a code that may not occur in the list of neighbouring hundred of all macro-level base stations. Node 26 control passes to the femtocells access point a list of internal and external codes scrambling for the organization, as defined by the network operator.

Thus, in this embodiment, the list of neighbor cells in the standby mode, the switch is em all scrambling codes (and external, and internal)that are used by all the groups and organizations that meet in the main table relationships obtained femtocells access point. For example, if femtocells access points in groups 2 and 3 are used (and reported by table MRT), respectively codes SC1 and SC2 scrambling, femtocells access point in the group 2 in the list of neighboring cells in the standby mode contains both code SC1 and SC2. In the list of neighbor cells in the standby mode includes only those femtocells access points, which are indicated in the main table relationships as active (i.e. not irrelevant). Therefore, femtocells access point scans the main table relationships to identify all scrambling codes that are used by all of femtocells access points in all groups listed in the main table relationships.

At step 46 these scrambling codes are added to the list of neighbor cells in the standby mode with a different frequency and/or in the list of neighbor cells in the standby mode with the same frequency in accordance with the situation.

At step 48 femtocells access point creates its internal mobility table or a list of neighboring cells in connected mode. More specifically, the creation of a list of neighbor cells in connected mode involves selecting a subset of scrambling codes, the cat is that there are in the list of neighboring cells in the standby mode, and also includes the search for cells (identified by a combination of rooms UARFCN (UTRA Absolute RF Channel Number, the absolute channel number of the radio communication system UTRA), the primary scrambling code and cell identity) with the highest priority.

In this embodiment, the list of neighbor cells in the connection mode femtocells access points may include all scrambling codes (external and internal)that are used by the same group that meets in the main table relationships obtained femtocells access point. For example, if femtocells access points in groups 2 and 3 are used (and reported by table MRT) respectively two codes SC1 and SC2 scrambling, femtocells access point in the group 2 in the list of neighboring cells in connected mode code SC1, but does not contain code SC2. In the list of neighbor cells in connected mode again only includes femtocells access points, which are indicated in the main table relationships as active (i.e. not irrelevant).

Thus, these scrambling codes can be a subset of the list of neighbor cells in the standby mode (if the number of femtocells access points in the group organization is less than the number of available external and internal main scrambling codes). Femtocells point to blunt transmits the list of neighbor cells in connected mode in connected devices UE user via message control measurements. Thus, the block pointer SIB 12 (System Information block system information block SIB 11 indicates that the UE device user should not read block SIB 12 in connected mode, and should be read in block SIB 11.

As within the group organization can have multiple femtocells access points with the same primary scrambling code, the target honeycomb handover also depends on the cell ID, and you must assign priorities satam so that handover was triggered on the basis of the priority order. To set the priority of the cells IDs calculates a weighting function to determine the most likely femtocells access points to this primary scrambling code and, consequently, with the highest priority.

Figure 6 shows the structure of internal mobility tables containing the list of neighbor cells in connected mode. More specifically, each record contains a combination of non UARFCN, the primary scrambling code and cell ID. The purpose of the list of internal mobility tables is the ranking of these records in order of decreasing priority. Internal table mobility should be considered as a table display. The primary scrambling code, measured by the UE device user, not necessarily corresponds to one and only one is spruce cell. For example, if the UE device user measures the main code PSC3 scrambling, which was not previously identified as a neighbor, it is expected that femtocells access point will consistently experience of femtocells access points in the same group who use the code PSC3.

The process of creating internal mobility tables begin with a definition of the size of the internal mobility tables and set all cells in the table is equal to zero, and then can begin the process of filling in the table. When enabled, all values honeycomb set equal to zero in order to take into account the fact that femtocells access point could be moved to another position since the last operation.

First, in table MRT searches for all combinations of non UARFCN, the primary scrambling code and cell ID, which are found in the group organization. Other femtocells access point and the macro-level cells are excluded from this search. However, this search does not distinguish between external and internal primary scrambling codes. Found cell then studied more, depending on the relationship of potential neighboring cells and femtocells access points involved. More specifically, cells with a more distant relationship are studied in the first place so that when the honeycomb occurs twice, the result is, obtained from a closer connection, re-recorded the results from a more distant connection.

Thus, for each cell found during the search are specified weights relative position. The weight ratio of the relative position is determined whether the adjacent honeycomb detektirovanii neighboring hundredth of class 1 (i.e. neighboring hundredth, from which femtocells access point can detect signals when it is in monitoring mode downlink)facing the adjacent hundredth of class 1 (i.e. neighboring hundredth, which was able to detect signals from the first femtocells access points, the first of femtocells access point learned about it from the master table relationships) or neighboring hundredth class 2 (i.e detektirovanii neighboring hundredth or facing neighboring hundredth neighboring cells class 1). It is assumed that the most likely candidate for handover will detektirovaniya adjacent honeycomb class 1, and the next likely candidate will be given neighboring cell class 1.

It is likely that femtocells access point will be able to detect signals from two of the detected neighboring cells of class 1, i.e. two femtocells access points that have the same number UARFCN and the primary scrambling code, but, of course, have a different identifier for the cell. Since the shifts of the main scrambling codes of the two hundred most likely different, it is possible to distinguish the signals from the said adjacent honeycomb by using a narrow temporal filters for multipath signals detected from them. Thus, signals transmitted by one of the neighboring cells can be distinguished from signals transmitted by another hundredth, despite the fact that they are transmitted with the same number UARFCN and the primary scrambling code.

In the initialization process detectionin neighboring satam class 1 and facing the adjacent satam class 1 are assigned to the appropriate weighting factors k1 and k2. For example, the coefficient k1 may be equal to 0.5, and the coefficient k2 may be equal to 0.3.

First of femtocells access point searches for neighboring SOT class 2, which are detektirovanie neighboring cells for all rooms UARFCN facing the neighbouring hundred of class 1. The weight ratio of the relative position for all similar neighboring hundred equals k2/4.

Next femtocells access point searches for neighboring facing SOT class 1 for all non-UARFCN for the group organization. As indicated above, the weight ratio of the relative position for all similar neighboring honeycomb is set equal to k2.

Then femtocells access point searches for neighboring SOT class 2 that de is ektirovanii neighboring detektirovanie honeycombs class 1 for all non-UARFCN of the organization. The weight ratio of the relative position for all similar neighboring hundred sets k1/4.

Finally, femtocells access point searches for neighboring detected SOT class 1 for all non-UARFCN for the group organization. As indicated above, the weight ratio of the relative position for all similar neighboring honeycomb is set equal to k1.

Thus, internal mobility table is populated with the possible neighboring cells, each of which has an assigned weighting factor relative position.

After that, the node 26 control can also inform femtocells access point of a certain operator weighting factor for all possible neighboring cells. The default value is specified by the operator weighting factor for all combinations of non UARFCN, the primary scrambling code and cell ID is 0, but this parameter can take any value in the range from 0 to 1.

Internal mobility table also contains the weighting factor for the success of handover for each UARFCN, the primary scrambling code and cell ID, which is updated after each attempt of handover of femtocells access points. Thus, for all combinations of non UARFCN, the primary scrambling code and cell ID is PE is estrace number of successful and unsuccessful attempts handover.

After each attempt of handover determine ended if this attempt succeeds or fails. If the attempt is successful, the current value of the weighting factor for the success of handover for a given combination of numbers UARFCN, the primary scrambling code and cell ID is increased. For example, the value of the weighting factor for the success of handover could increase by 0.1 to a maximum value equal to 0.5. On the contrary, if the attempt fails, the current value of the weighting factor for the success of handover may be decreased by 0.1 to a minimum value of 0.

Internal table mobility also update each time you receive femtocells access point of a new or updated master table relationships and every time when performing measurements in the monitoring mode downlink femtocells access points. More specifically, in these cases, the re-computed weights relative position.

On the main table relationships defined lost if the urgency of any existing entry in the internal table mobility, in which case they are removed, or are there any new combinations of non UARFCN, the primary scrambling code and cell ID for which you want to create the ü record. The process of re-calculation of weights the relative position is performed, as described above, with the exception that the internal mobility tables are not set initially equal to zero.

Then use the updated internal mobility table.

Then for each combination of non UARFCN, the primary scrambling code and cell ID is calculated combined weighting factor. The network operator may define by parameter reported femtocells access point how to calculate the combined weight

When the first value of the parameter specified by the operator weighting factor is added to the two values of the weighting factor calculated in femtocells access point. Thus:

combined weighting factor=specified by operator weight+weight coefficient relative position+weighting factor for the success of handover.

When the second value of the parameter specified by the operator the weight factor is not used in the calculation of the combined weighting factor. Thus:

combined weighting=weighting factor relative position+weighting factor for the success of handover.

If the third parameter value when calculating combined is about the weighting factor is used only defined by the operator of the weighting factor. Thus:

combined weighting factor=specified by operator weighting factor.

Thus, in this embodiment, when calculating the combined weight using the weight coefficient of the relative position and the weight ratio of handover, put them together, so that each of them contributes 50% to a combined weighting factor whose value ranges from 0 to 1. However, it is clear that there are many other options for combining these different parameters to obtain the weighting factor for each combination of non UARFCN, the primary scrambling code and cell ID.

Even despite the fact that the network operator can determine that femtocells access point has always used only a certain operator weighting factor to calculate the combined weighting factor at some one time, femtocells access point, however, must continue to calculate the weighting factor for the relative position and the weighting factor for the success of handover so that this information remains current in case the network operator to change the configuration.

Combined weighting factor, calculated as described above, is used in this way on what I set the priority of each cell in the list of neighboring cells in connected mode, which is determined by the internal mobility table.

Step 48, shown in figure 5, thus terminates and returns to step 50 shown in figure 4. Femtocells access point you want to include in their lists of neighboring cells in idle mode and connected mode cell from the macro-level, preferably at a macro level cell with the highest priority. In this embodiment, the same macro-level cells included in the list of neighboring cells in idle mode and connected mode, and thus the following process is used to find only one set of adjacent macro-level cells.

Thus, described above, as the external and internal scrambling codes used by the set of femtocells access points in the organization in one place, are extracted from the master table relationships to start creating lists of neighboring cells in idle mode and in connected mode with the same frequency and with different frequency.

In step 50 begin the process of adding the neighboring macro-level cells in these lists to create a comprehensive list of neighboring cells in idle mode and in connected mode. More specifically, in step 50 are identified macro-level cells in the same cell of the communication network (i.e. in the same land mobile network public use, PLMN), which is can be used as a neighboring cell.

For example, cells that use scrambling codes that are part of internal or external lists scrambling codes may be excluded because they can be considered as allocated to the femtocell. In this embodiment, the following additional steps to prevent the identification of other nearby femtocells, which may use a different range of scrambling codes as macro-level cells. More specifically, when femtocells access point is configured to detect signals from other base stations for all available rooms UARFCN in the monitoring mode downlink, also studied the content of their blocks SIB 7. Since femtocells access points can use the block SIB 7 for transmitting information about adjusting the ratio of the CPICH channel characteristic of femtocells access points, macro-level cells are only those cells whose blocks SIB 7 does not include the adjustment factor of the CPICH channel. Thus, in the method of ranking the neighboring macro-level honeycomb included only these filtered macro-level scrambling codes and lists of neighboring cells.

At step 52 the identified neighboring macro-level cells are grouped on the basis of information received from the master table relationships, as well as the information obtained in the monitoring mode downlink, used by the radio access system and the carrier. More specifically, when femtocells access point is a femtocell UMTS macro-level cell group in macrosty UMTS system that uses the same carrier, macrosomy UMTS that use other carriers, and macrosty system GSM (or other).

Grouped thus neighboring cells added to the appropriate list of neighbor cell: the list of neighbor hundred with the same frequency, the list of neighbor hundred with a different frequency and a list of neighbor hundred different radio access systems, as described in detail below. To identify the neighbouring hundred with the highest probability of femtocells access point uses the decoded information channel VSN (broadcast channel) surrounding femtocells access points in the same group in the organization, as well as all the macro-level cells detected in the monitoring mode downlink, as well as information list of the neighboring cells, indicated by a main table relationships.

Each of femtocells access point is configured to receive multiple lists of neighboring cells, for example, by decoding the lists passed to the macro-level and vektoranalysis honeycombs in their blocks SIB, and by studying the main table vzaimosvyazani femtocells access point uses the results of the measurements of received signal strength (RSCP, Received Signal Code Power) of the detected cells, obtained in the monitoring mode downlink, consisting of two stages of the process to create its list of the neighboring macro-level hundred through the ranking process.

In step 54 calculates the rank for each cell.

For neighboring macro-level hundred UMTS system rank is calculated as follows.

First, calculate the weight constant W| for each macro-level cell and each other femtocells access points, detektirovanii this femtocells access point in monitor mode downlink:

$$w_i=\frac{RSC{P}_i}{RSC{P}_{\max }}$$,

where RSCP_irepresents the value of RSCP in mW i-th detektirovanii macro-level cells or femtocells access points (i=1, ..., n), a RSCP_maxrepresents the highest RSCP value in mW any detektirovanii macro-level cells or femtocells access points.

Secondly, for each macro-level cells or femtocells access points, detektirovanii this femtocells access point in monitor mode downlink, appoint a calculated weighting constant for each of the macro-level cell in the list of neighbor cells, this macro-level cell or femtocells access point.

Third, for each macro-level cell, which occurs in the main table of the Association, appoint a fixed weighting factor of 0.01. This ensures that some macro-level cell will still meet in the final list of neighbor cells, even in the extreme case, when all the surrounding femtocells access points, and the underlying macro-level station blocked the next level of femtocells access points, however small the value of the weighting factor of 0.01 implies that these cells will in most cases cut off from the list of neighbor cells in favor of a more probable neighboring cells.

Fourth, compute the rank of each unique macro-level cell of the UMTS system as the sum of all the weighting constant that is assigned to this cell in the previous steps. That is, if the potential of the neighboring macro-level cell is found in the neighboring lists more than one hundred other macro-level cell or other femtocells access points, its rank is calculated by adding together the weight constant calculated for these other macrolevel hundred or femtocells access points.

For neighboring macro-level hundred 2G system (e.g., GSM) grade is calculated in a different way. For each detektirovanii neighboring mA is porovnavaj cell 2G its rank is determined by the level of reception (Rx level, Rx_LeV_i). Secondly, for each defined thus neighboring macro-level cell 2G (i.e. neighboring cells, which cannot be detected directly femtocells access point performing the procedure, but which is found in the list of neighbor hundred macro-level cell or other femtocells access points, detektirovanii this femtocells access point in monitor mode downlink) rank determined by the weight constant calculated above for macro-level cell or 3G femtocells access points, the list of neighbor hundred which it occurs.

After calculating ranks as the macro-level cells in the process of considering separately the macro-level cells with the same frequency with a different frequency and with another radio access system.

In step 56 taking into account only those potential neighboring honeycomb with the same carrier that femtocells access point performing the procedure, the macro-level cells, detected this femtocells access point added to the list of neighboring cells in order of their power, RSCP, while satam with the greatest power RSCP assigns the highest priority.

Then in step 58 other potential neighboring cells with the same carrier that femtocells access point performing the procedure, added to the list of neighboring cells in order of their rank, wycis the military, as explained above.

The maximum size of the list of neighbor hundred with the same frequency equal to N_intraso in step 60 choose and add to the list of macro-level cells to achieve the specified maximum size.

At step 62 taking into account only those potential neighboring cells with a carrier other than the carrier of femtocells access points that perform the procedure, the macro-level cells, detected this femtocells access point added to the list of neighboring cells in order of their power, RSCP, while satam with the greatest power RSCP assigns the highest priority.

Then in step 64 other potential neighboring cells on another carrier other than the carrier of femtocells access points that perform the procedure are added to the list of neighboring cells in order of their rank, calculated as described above.

The maximum size of the list of neighbor hundred with a different frequency is equal to N_interso in step 66 choose and add to the list of macro-level cells to achieve the specified maximum size.

As for hundreds of other radio access system, for example GSM, at step 68 first rank detected macro-level neighboring cells (i.e. neighboring cells that can be detected directly femtocells access point performing the procedure). More specifically, the ranking of each cell determines the I in its reception (Rx_Lev _i), while satam with the highest reception level assigns the highest priority.

At step 70 for each specific thus neighboring macro-level cell (i.e. neighboring cells, which cannot be detected directly femtocells access point performing the procedure, but which is found in the list of neighbor hundred macro-level cell, or other femtocells access points, detektirovanii this femtocells access point in monitor mode downlink) grade is determined by the weight constant calculated above for macro-level cell or 3G femtocells access points, the list of neighbor hundred which it occurs.

At step 72 in the list are added to cells in the order specified above grade.

The maximum size of the list of neighbor hundred different radio access systems is equal to N_GSMso in step 74 is chosen and added to the corresponding list of macro-level cells to achieve the specified maximum size.

Thus, the above-described method of forming the lists of neighboring cells in idle mode and in connected mode to the adjacent honeycomb with the same frequency with different frequencies and with different radio access systems.

1. The generation of the list of neighbor cells intended for use in a base station of a cellular communication network, vkljuchajuwih is for each of the many neighbouring cell:
the purpose of the magnitude of the first component depending on whether the base station to detect the signals transmitted from the specified neighboring cells;
the purpose of the magnitude of the second components based on retrospective data about successful or unsuccessful attempts handover specified in the neighboring cell;
combining values from the first and the second component with the formation of the weighting parameter;
receiving from the network for each of the many neighbouring hundred of the corresponding value of the third components;
the reception of the network signal selection; and
determining, based on a specified signal select whether priority handover assigned to the specified neighboring cell, based on the weight parameter or the value of the third component.

2. The method according to claim 1, characterized in that it further comprises combining values of the first, second and third component with the formation of the second weight parameter; and
determining, based on a specified signal select whether priority handover assigned to the specified neighboring cell, based on the weight parameter, or the second weight parameter, or the value of the third component.

3. The method according to any of the preceding paragraphs, characterized in that it is designed for use in femtocells access point forming part of the group organization, and on the replies:
the formation of this weighting parameter for each of the multiple adjacent cells, forming part of the specified group of the organization; and
the inclusion of these neighboring cells in the specified list of neighboring sites on the basis of the priority handover.

4. The method according to claim 3, characterized in that it further comprises the inclusion in the list of neighboring cells to the least one neighboring cell, not forming part of the specified group organization.

5. The method according to claim 4, characterized in that the at least one neighboring cell, not forming part of the specified group organization, is a macro-level cell.

6. The method according to claim 1 or 2, characterized in that it includes:
receive a list of available scrambling codes;
determining whether to calculate a weighting parameter for each of the available scrambling code; and
creating a list of neighboring cells in connected mode, containing each of the scrambling codes, for which the calculated weighting parameter.

7. The method according to claim 6, characterized in that it further includes creating a list of neighboring cells in the standby mode, including all available scrambling codes.

8. The method according to claim 1 or 2, characterized in that it includes:
attempt to detect signals from the first neighboring cells in the first channel with a first scrambling code for the first re is currentnode period of time; and
attempt to detect signals from the second neighboring cell in the first channel with a first scrambling code for the second recurring period of time, out of respect to the first recurring period of time.

9. A base station for a cellular communication network, configured to generate a list of neighboring cells for each of the multiple adjacent honeycomb by:
assign the value of the first components depending on whether the base station to detect the signals transmitted from the specified neighboring cells;
the destination value of the second components based on retrospective data about successful or unsuccessful attempts handover specified in the neighboring cell;
combining the values of the first and second component with the formation of the weighting parameter;
receiving from the network for each of the many neighbouring hundred of the corresponding value of the third components;
receiving, from the network select signal; and
determine, based on a specified signal select whether priority handover assigned to the specified neighboring cell, based on the weight parameter or the value of the third component.

10. A network of femtocells access points connected together through a local area network so that they can exchange information about their respective status is, each of femtocells access point is configured to create a list of neighboring hundred by a method according to any one of claims 1 to 8.