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WO2011069384A1 - Procédé et terminal permettant de mettre en œuvre une résidence cellulaire - Google Patents

Procédé et terminal permettant de mettre en œuvre une résidence cellulaire Download PDF

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Publication number
WO2011069384A1
WO2011069384A1 PCT/CN2010/077220 CN2010077220W WO2011069384A1 WO 2011069384 A1 WO2011069384 A1 WO 2011069384A1 CN 2010077220 W CN2010077220 W CN 2010077220W WO 2011069384 A1 WO2011069384 A1 WO 2011069384A1
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WO
WIPO (PCT)
Prior art keywords
system information
terminal
cell
target cell
saved
Prior art date
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PCT/CN2010/077220
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English (en)
Chinese (zh)
Inventor
胡力
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ZTE Corp
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ZTE Corp
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and a terminal for implementing cell camping. Background technique
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • B3G, Beyond 3G 3rd Generation Partnership Project
  • WiMAX World Interoperability for Microwave Access
  • the LTE 'J, zone system information can be divided into a main information block (MIB) and a plurality of system information blocks (SIBs).
  • MIB main information block
  • SIBs system information blocks
  • the MIB contains a few of the most commonly used parameters that are necessary to obtain additional information about the cell.
  • SIB1 system information
  • SIBs are included in the system information (SI, System Information) message.
  • SIBs included in an SI message can be flexibly configured in the SIB1 Scheduling Info List. Including: (1) Each SIB can only be included in a single SI message; (2) Only SIBs with the same scheduling period can be included in the same SI message; (3) SIB2 is always included in the scheduling information. In the SI message corresponding to the first entry in the list, multiple SI messages may have the same scheduling period.
  • the UE When the network changes the system information and the user equipment (UE, User Equipment) moves to other cells, the UE needs to re-acquire the system information of the cell.
  • the PAGE message is first used to notify the UE that the system information changes, and the network is in the next adjustment period.
  • the updated system information is sent in the (modification period). Therefore, when the UE receives the system information change notification, the UE can start acquiring new system information at the boundary of the next adjustment period.
  • the UE When the UE moves When camping on another cell, the UE can directly obtain system information of the cell from the radio channel of the cell.
  • SIB1 includes a cell indicating that the SI message has changed (ie, systemlnfoValueTag, system information value tag), and the UE can determine whether the SI message is changed by checking whether the systemInfoFValueTag is changed, thereby determining whether another SIB needs to be reacquired.
  • the correct acquisition of the cell system information is a prerequisite for the UE to camp on the cell.
  • the UE usually obtains the system information of the target cell in real time directly from the radio channel. Specifically, the UE first acquires the MIB, and then acquires the SIB 1 and the slave SIB. After obtaining the scheduling information of the SI, the scheduling information is used to acquire other SIBs. If it is determined that the cell is suitable for camping, the UE saves the system information of the cell.
  • the method of acquiring the system information of the target cell in real time may cause the system information to be incorrectly acquired due to the existence of the interference, so that the UE cannot immediately camp on the optimal cell, and needs to pass the later stage.
  • the UE measurement triggers the reselection procedure to reselect to the optimal cell, which not only unnecessarily increases the burden on the UE and the network, but also increases the battery consumption of the UE if the UE frequently acquires the cell system information from the wireless channel.
  • the system information is sent to the terminal by means of segmented broadcast. Since the broadcast of the system information is also affected by the channel interference, the terminal cannot receive the terminal correctly. Therefore, the subsequent cell trigger is also triggered. The process of selection.
  • the channel interference in the prior art may affect the correctness of the system information of the target cell acquired by the UE in real time, resulting in the problem that the UE cannot camp on the optimal cell due to the existence of temporary interference and unnecessary cell reselection. Propose an effective solution. Summary of the invention
  • the present invention proposes a cell resident implementation.
  • Method and terminal enabling the terminal to preferentially use the saved system
  • the system information is used to perform cell camping, and the probability of the terminal receiving the system information incorrectly is reduced.
  • a method of implementing cell camping is provided.
  • the method for implementing cell camping according to the present invention includes: when the terminal performs cell selection or cell reselection, the terminal determines whether the system information of the target cell that is selected or reselected is included in the system information of the plurality of cells that are saved by the terminal, The multiple cells are the multiple cells that the terminal successfully camps on. If the determination result is yes, the terminal determines whether the current system information of the target cell broadcasted by the network is the same as the system information of the target cell saved by the terminal, and determines As a result, in the same case, cell camping is performed using the system information of the saved target cell.
  • the terminal determines whether the current system information of the target cell is the same as the system information of the saved target cell, specifically: the terminal acquires a current system information value tag of the target cell from the network, and marks whether the target cell is saved according to the acquired system information value.
  • the system information values corresponding to the system information are marked the same to determine whether the current system information is the same as the system information of the saved target cell.
  • the method further includes: the terminal acquiring from the network The system information of the target cell, and uses the acquired system information to perform cell camping.
  • the terminal also stores the cell frequency point information of the cell, and/or the physical identity of the cell, and/or the storage location index of the system information of the cell in the terminal.
  • the terminal determines, by the terminal, whether the saved system information includes the system information of the target cell that is selected or reselected, specifically: the terminal acquiring the physical identifier and/or the frequency point information of the target cell from the network, and the physical identifier of the saved multiple cells. In the case where the acquired physical identifier and/or frequency point information is included in the frequency information, it is determined that the saved system information includes system information of the target cell.
  • the method may further include: the terminal sorting the cache index array corresponding to the multiple cells according to the camping order of the multiple cells; the cache index array includes The cell frequency point information of the cell, and/or the physical identity, and/or the system location information of the cell are indexed by the storage location in the terminal.
  • the method may further include: the terminal configuring a subscript for each cache index array, and labeling, by the subscript, the storage time of the system information corresponding to each cache index array in the terminal.
  • the method may further include: before the terminal saves the acquired system information, if the storage space used by the terminal to save the system information is occupied, and the acquired system information needs to be stored, the terminal deletes the earliest stored system information in the storage space. And the corresponding cache index array.
  • a terminal is also provided.
  • the terminal includes: a saving module, configured to save system information of a plurality of cells where the terminal resides; and a determining module, configured to determine whether the saved system information is included if the terminal performs cell selection or cell reselection The system information of the target cell that is selected or reselected; the determining module, configured to determine, if the determination result is yes, whether the current system information of the target cell broadcasted by the network is the same as the system information of the target cell saved by the terminal; And a module, configured to perform cell camping by using system information of the saved target cell if the determination result of the determining module is the same.
  • the terminal according to the present invention further includes: an obtaining module, configured to: in the determining module, determine that the saved system information of the plurality of cells does not include system information of the target cell, or the system that determines that the determination result of the module is current system information and the saved target cell If the information is different, the system information of the target cell is obtained from the network, and the acquired system information is used for cell camping.
  • an obtaining module configured to: in the determining module, determine that the saved system information of the plurality of cells does not include system information of the target cell, or the system that determines that the determination result of the module is current system information and the saved target cell If the information is different, the system information of the target cell is obtained from the network, and the acquired system information is used for cell camping.
  • the terminal can pre-store the system information of the cell that once camped, and after performing cell reselection or selection, it is determined whether the system information of the selected or reselected target cell has been saved on the terminal, and is preferentially saved.
  • the system information is used to camp on the cell, so that the system information of the target cell can be directly obtained from the network, and the probability of erroneous reception of the system information is reduced, thereby avoiding the sudden interference when the system information is acquired in real time, and effectively solving the problem. Due to The problem of incorrectly receiving system information and not camping on the optimal cell leads to subsequent cell reselection, which saves energy consumption of the terminal, reduces the processing load of the terminal, and improves the performance of the terminal when camping.
  • FIG. 1 is a flowchart of a method for implementing cell camping according to an embodiment of a method according to the present invention
  • FIG. 2 is a schematic diagram of system information saving in a method for implementing cell camping according to an embodiment of a method according to the present invention
  • FIG. 3 is a flow chart showing a detailed processing procedure of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 4 is a schematic diagram of a cell camping process in a processing example 1 of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 5 is a schematic diagram showing a change of an array of system information indexes in a cell resident process in a processing example 1 of a cell resident implementation method according to an embodiment of the method of the present invention
  • FIG. 6 is a schematic diagram of a cell camping process in a processing example 2 of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 7 is a schematic diagram showing a change of an array of system information indexes in a cell resident process in a processing example 2 of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 8 is a schematic diagram of a cell camping process in a processing example 3 of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 9 is a schematic diagram showing changes in an array of system information indexes in a cell resident process in a processing example 3 of a method for implementing cell camping according to an embodiment of the method of the present invention
  • FIG. 10 is a block diagram of a terminal in accordance with an embodiment of the method of the present invention. detailed description
  • the terminal needs to be wireless from the target cell after reselecting or selecting each time.
  • the communication network acquires system information of the target cell, but the channel in the wireless communication network is susceptible to interference, which may result in the terminal not being able to camp in the optimal cell, and subsequently performing cell reselection, which not only increases the terminal's
  • the processing burden also increases the power consumption of the terminal.
  • the present invention provides that the terminal pre-stores the system information of the cell that once camped (including the system information of the currently camped cell), and after performing cell reselection or selection, preferentially determines the target cell of the selected or reselected cell.
  • the establishment process refers to: after the terminal is powered on, the terminal camps on the terminal due to the mobility of the terminal, and the terminal needs to add the system information of the successfully camped cell to the terminal.
  • the system information buffer is used to subsequently perform cell resident using system information in the system information buffer.
  • the method for implementing cell camping in this embodiment includes:
  • Step S102 When the terminal performs cell selection or cell reselection, the terminal determines whether system information of the selected or reselected target cell (the target cell may be determined according to the measurement report in advance) in the system information of the plurality of cells saved by the terminal.
  • the multiple cells are a plurality of cells that are successfully camped on by the terminal, that is, the multiple cells should include at least one cell that the terminal has successfully camped in before, and the serving cell where the terminal is currently camped.
  • Cache for example, stored in the system information cache of the terminal;
  • Step S104 If the determination result is yes, the terminal determines whether the current system information of the target cell currently broadcasted by the network is the same as the system information of the target cell saved by the terminal, and When the result is (the current system information is the same as the system information of the saved target cell), the cell resident is performed using the system information of the stored target cell.
  • the terminal can pre-store system information (including system information of the currently camped cell) of the cell that once camped, and preferentially determine system information of the selected or reselected target cell after performing cell reselection or selection. Whether it has been saved on the terminal, and preferentially uses the saved system information to perform cell camping, thereby largely avoiding acquiring system information of the target cell directly from the network, thereby reducing the probability of erroneous reception of system information, thereby avoiding real-time Obtaining the burst interference when the system information is obtained, effectively solving the problem that the cell cannot be relocated in the optimal cell due to the incorrect reception of the system information, thereby saving the energy consumption of the terminal, reducing the processing load of the terminal, and improving Performance when the terminal is parked.
  • system information including system information of the currently camped cell
  • the terminal when performing cell system information storage, for each of the three cells corresponding to the system information saved by the terminal, the terminal also stores an array of cache indexes of each cell, including: frequency point information (for example, , may be the Absolute RF Channel Number (ARFCN) of each cell, and/or the physical identifier (PhyCell Id), and/or the storage location index of the system information in the terminal (may be called Index ), each storage location index corresponds to 1 system information (that is, SystemsInfo([0], SystemsInfo[l], SystemsInfo[2] in the system information cache) to find the stored system information.
  • frequency point information for example, may be the Absolute RF Channel Number (ARFCN) of each cell, and/or the physical identifier (PhyCell Id)
  • Physical identifier Physical identifier
  • the storage location index corresponds to 1 system information (that is, SystemsInfo([0], SystemsInfo[l], SystemsInfo[2] in the system information cache) to find the stored system information.
  • the terminal may obtain the physical identifier and/or the frequency point information of the target cell from the network, and the physical identifier of the saved multiple cells and/or When the acquired frequency information includes the physical identifier and/or the frequency point information, it is determined that the system information of the saved multiple cells includes the system information of the target cell.
  • the terminal determines whether the current system information of the target cell is the same as the system information of the saved target cell, the terminal needs to acquire the system information value tag of the target cell from the network (ie, the systemInfoValueTag described above), and confirm the acquired system information value.
  • the tag is the same as the saved system information value tag of the target cell, the current system information and the saved target of the target cell are determined.
  • the system information of the standard cell is the same; otherwise, it is not the same.
  • the MIB and SIB1 of the target cell system information are first read from the network, and the acquired LTE frequency point information and/or the physical identity of the cell are searched. Whether there is system information of the target cell in the system information buffer of the terminal. If the system information area cache hits, check whether the value tag in the SIB1 stored by the terminal, that is, the system information value tag (systemlnfoValueTag) is the value tag in the acquired SIB1. The same, if the two are the same, the system information in the system information buffer is directly used, and the system information of the cell is not obtained in real time.
  • system information of the 3G system cell has multiple system information value tags, and each tag indicates whether one part of the system information changes, and determines one obtained from the network.
  • system information value tags of the system information are the same as all the system information value tags of the saved system information, it is determined that the acquired system information is the same as the saved system information, and the saved system information can be used for cell resident.
  • the terminal acquires system information of the target cell from the network. And use the acquired system information for cell resident.
  • the terminal After the terminal acquires the system information of the target cell and successfully camps on the target cell, the terminal can save the acquired system information. Before the terminal saves the acquired system information, if the storage space (such as the system information buffer) for storing system information on the terminal is occupied, the terminal overwrites the earliest stored system information in the storage space with the currently acquired system information. Thereby ensuring the timeliness of the system information saved by the terminal.
  • the storage space such as the system information buffer
  • the terminal sorts the cache index array corresponding to the system information of the cells according to the camping order of the cells, and the storage location of the system information may remain unchanged, where each Cache index array corresponding to system information of each cell A storage location index in the terminal including frequency point information, and/or physical identification, and/or system information of the cell.
  • the terminal may further configure a subscript for each cache index array, and indicate, by using a subscript pair, the storage time of the system information corresponding to each cache index array in the terminal, for example, may be the earliest resident The subscript of the cache index array corresponding to the cell is configured as 0.
  • the corresponding cache index array is added, and the corresponding subscript is configured.
  • the subscript can be configured by using 0, 1, and 2 N-1, and N-1 indicates the The system information corresponding to the cache index array is the latest stored system information.
  • the terminal first resides in the first cell, the terminal saves the system information of the cell and the corresponding cache index array, and sets the subscript of the array to 0; when the terminal camps on the second cell, the terminal saves the second The system information of the cell and the corresponding cache index array, and the subscript of the array is set to 1, at this time, the order of the cache index array is 0, 1; when the terminal camps on the third cell, the terminal saves the third cell System information and the corresponding cache index array, and set the subscript of the array to 2, at this time, the cache index array is sorted to 0, 1, 2; after the terminal then resides in the second cell, the terminal can The system information of the saved second cell is used to re-live in the second cell, and the order of the cache index array is adjusted according to the resident order. At this time, the order of the cache index array can be changed to 0, 2, 1.
  • a cache index table may be set in the storage space of the terminal, and an array of cached cells of the camped cells may be stored in the cache index table in chronological order.
  • the subscript of the array of each cache cable can indicate the dwell time of the terminal in each cell.
  • an array element with a subscript of 0 can represent the cell that was originally camped, and so on, and the subscript is N-1.
  • the array element indicates the most recently camped cell (ie, possibly the currently camped cell).
  • the cache index array with the subscript 0 and the corresponding system information can be eliminated.
  • the index of the cache index array can also be set to the specific time value or time identification. In other cases, this article is no longer - enumerated.
  • FIG. 3 is a detailed diagram of an implementation method of cell camping according to this embodiment in an LTE system. Flow chart of the process. As shown in FIG. 3, the following specifically includes:
  • the terminal Upon receiving the request to read the target cell system information, the terminal needs to read the system information of the target cell (selected or reselected), first proceeds to step 301, and searches for the cache using the obtained frequency information and/or physical identifier of the target cell.
  • the index array if it cannot be hit, does not store the system information of the target cell in the terminal, and proceeds to step 302; if it can hit, it proceeds to step 305.
  • Step 302 Determine whether the system information buffer area is full. If it is full, go to step 303; if not, go to step 304.
  • Step 303 Eliminate the earliest stored cache index array (for example, a cache index array with a subscript of 0), for example,
  • the corresponding position in N-1 after that, the terminal reads the system information of the target cell in real time, and stores the storage location pointed to by the storage location index in the cache index array N-1, that is, the cache index array corresponding to the original subscript 0 The location of the system information store.
  • Step 304 When the system information of the target cell is not saved in the terminal, and the system information buffer is not full, select an unused cache index array according to the subscript order from small to large, and select an unselected in the system information cache. a cache used, and adding a storage location index to the selected cache index array to indicate the selected cache; and simultaneously recording the obtained frequency information and/or physical identity of the target cell to the selected cache index The corresponding position in the array; after that, the terminal reads the system information of the target cell in real time, and stores it in the storage location pointed to by the storage location index in the selected cache index array.
  • Step 305 When the system information of the target cell is saved in the terminal, the cache index array of the temporary hit, that is, the cache index array of the target cell, is after the cache index array of the target cell
  • the buffer index array subscripted as Nl (excluding the cache index array of the target cell) moves forward by 1 position, thus vacating the buffer index array subscripted with N-1, and the information of the temporary hit array
  • the vacant array is placed, and the corresponding system information is updated, and step S306 is performed.
  • Step 306 Check whether the SIB1 median flag changes. If the change occurs, the current system information of the target cell is obtained in real time and stored in the corresponding location; if no change occurs, the previously buffered SIB is used.
  • the terminal resides in the cell A after being powered on, and the frequency point information and/or the physical identifier of the cell A is stored in the cache index array element 0, and the system information of the cell A is stored in The storage location pointed to by the storage location index in element 0 of the cache index array, in addition, the cache index array subscript of the latest resident cell needs to be separately recorded, which is 0 (ie, the current camping cell).
  • Step 11 The terminal moves from the cell A to the cell B, and needs to read the system information of the cell B.
  • the terminal first reads the SIB1 of the cell B, and then searches the cache index array by using the frequency information and/or the physical identifier of the cell B, according to the next The search starts from the smallest to the largest, and the search result is that the cell A is the latest camping cell (ie, the current camping cell), and the cache index array of the cell B is not searched.
  • the terminal starts to acquire the SI message from the wireless channel in real time to obtain After other required SIBs are successfully obtained, all the required SIBs are obtained (that is, the terminal acquires the system information of the cell B from the network), the terminal resides in the cell B, and the system information of the cell B is saved in the system information buffer area. And setting the corresponding cache index array 1: storing the frequency information and/or physical identifier of the cell B in the corresponding position of the cache index array element 1, and storing the storage location index of the system information in the system information cache area in the cache index. The corresponding position in array 1, and record the cache index array of the latest resident cell Subscript 1.
  • Step 12 The terminal moves from the cell B to the cell C.
  • the specific procedure is the same as that in step 11.
  • the cached index array of the latest resident cell recorded has a subscript of 2, and the cache system information is reached. The maximum number of cells.
  • Step 13 The terminal moves from the cell C to the cell D.
  • the system information cache is full.
  • the system information of an existing cell in the cache must be eliminated, according to the designed cache index.
  • Array record order the smaller the index of the array is, the earlier the resident cell time of the record is recorded.
  • the storage location index saved by the cache index array 0 points to the system information of the cell A, and the cell A is the earliest cell that can be camped. It is eliminated.
  • the specific method is to move the cache index array (the index index array with the smallest subscript, that is, 0) to the downward direction, and overwrite the cache index array 0, thus emptying the cache index array 2.
  • the location of the system information in which the cell A is originally saved is used to save the system information of the cell D.
  • the subscript of the cache index array that is originally subscripted as 0 is changed to 2, and the frequency information and/or physical identifier of the cell D is recorded.
  • the terminal after the terminal is powered on, it stays in the cell A, and the frequency information and/or the physical identifier of the cell A are stored in the cache index array 0, and the system information of the cell A is stored in In the system information buffer pointed to by the storage location index in the cache index array 0, the subscript of the cache index array of the latest camped cell needs to be separately recorded, which is 0 (that is, the currently camped cell).
  • Step 21 is the same as step 11 in Example 1.
  • Step 22 is the same as step 12 in Example 1.
  • Step 23 The terminal returns the cell B from the cell C.
  • the terminal first reads the SIB1 of the cell B, and then searches the cache index array by using the frequency information and/or the physical identifier of the cell B.
  • the search range starts from the array 0 to the array 2, and the search can be performed. Go to the array 1 with the information of the cell B, compare and obtain the value in SIB1
  • the value flag in the system information SIB1 of the marked and buffered cell B is the same. After the same is found, the SI message of the cell B is no longer needed to be read in real time.
  • the terminal station is camped on the cell A after being powered on, and the frequency information and/or the physical identifier of the cell A are stored in the cache index array 0, and the system information of the cell A is stored in the cache index array.
  • the subscript of the cache index array of the latest resident cell needs to be separately recorded, and is 0 (that is, the current camping cell).
  • Step 31 is the same as step 11 in Example 1.
  • Step 32 The terminal returns from the cell B to the cell A.
  • the terminal first reads the SIB1 of the cell A, and then searches the cache index array by using the frequency information and/or the physical identifier of the cell A.
  • the search range starts from the array element 0 to the array 1, and may Searching for the cache index array 0 has the information of the cell A, and compares and obtains the value tag in the SIB1 and the value tag in the system information SIB1 of the buffered cell A. If the difference is found, the SI message is acquired from the wireless channel in real time to obtain the cell.
  • the other SIBs of A update the cache of the storage system A system information, adjust the cache index array, first temporarily store the cache index array 0 of the cell A, and move the cache index array 1 of the record cell B forward by one position, leaving the cache index array 1. Put the information of the cache index array of cell A into it.
  • the terminal can pre-store system information (including system information of the currently camped cell) of the cell that once camped, and preferentially determine system information of the selected or reselected target cell after performing cell reselection or selection. Whether it has been saved on the terminal, and preferentially uses the saved system information to perform cell camping, thereby largely avoiding acquiring system information of the target cell directly from the network, thereby reducing the probability of erroneous reception of system information, thereby avoiding real-time Burst interference when acquiring system information, effectively solving the problem of not being able to reside optimally due to incorrect reception of system information
  • the problem of the cell continuing to perform the cell reselection is saved, the power consumption of the terminal is saved, the processing load of the terminal is reduced, and the performance of the terminal when the terminal is parked is improved.
  • time stamping the saved system information of each message Further indicating the time and status of the cell camping, enriching the function of the terminal.
  • a terminal is provided.
  • the terminal according to this embodiment includes:
  • a saving module configured to save system information of multiple cells in which the terminal resides
  • a judging module configured to be connected to the saving module, configured to determine, in the case that the terminal performs cell selection or cell reselection, whether the saved system information includes system information of the selected or reselected target cell;
  • a determining module connected to the saving module and the determining module, configured to determine whether the current system information of the target cell is the same as the system information of the target cell saved by the terminal, if the determination result is yes;
  • a resident processing module connected to the saving module and the determining module, configured to perform cell resident by using the saved system information of the target cell if the determining result of the determining module is that the current system information is the same as the saved system information of the target cell .
  • the terminal can pre-store system information (including system information of the currently camped cell) of the cell that once camped, and preferentially determine system information of the selected or reselected target cell after performing cell reselection or selection. Whether it has been saved on the terminal, and preferentially uses the saved system information to perform cell camping, thereby largely avoiding acquiring system information of the target cell directly from the network, thereby reducing the probability of erroneous reception of system information, thereby effectively solving The problem of erroneously receiving system information and not camping on the optimal cell leads to subsequent cell reselection, which saves energy consumption of the terminal and reduces the processing load of the terminal.
  • the apparatus may further include: an obtaining module (not shown), configured to determine, in the determining module, the saved If the system information of the multiple cells does not include the system information of the target cell, or the determination result of the determining module is that the current system information is different from the system information of the saved target cell, the system information of the target cell is obtained from the network.
  • an obtaining module (not shown), configured to determine, in the determining module, the saved If the system information of the multiple cells does not include the system information of the target cell, or the determination result of the determining module is that the current system information is different from the system information of the saved target cell, the system information of the target cell is obtained from the network.
  • the resident processing module is further configured to perform cell camping by using the acquired system information.
  • the apparatus according to the present embodiment can also store the cache index array and system information according to the manner shown in FIG. 2, and can also mark the storage buffer index array and array the storage cache according to the order in which the cells reside. Bow) to sort.
  • the apparatus according to the present embodiment can also implement the processing shown in Figs. 1 and 3 described above, and can perform the processing in the above-described examples 1 to 3, and other specific examples are not described herein again.
  • the terminal can pre-store the system information of the cell that once camped (including the system information of the currently camped cell), and prioritize the cell after performing cell reselection or selection.
  • the system information of the target cell selected or reselected has been saved on the terminal, and preferentially uses the saved system information to perform cell camping, thereby largely avoiding obtaining system information of the target cell directly from the network, and reducing the system.
  • the probability of erroneous reception of the information thereby effectively solving the problem that the cell cannot be relocated in the optimal cell due to the erroneous reception of the system information, thereby saving the energy consumption of the terminal and reducing the processing load of the terminal.

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention se rapporte à un procédé et à un terminal permettant de mettre en œuvre une résidence cellulaire. Le procédé comprend les étapes suivantes : lorsqu'un terminal sélectionne ou resélectionne des cellules, le terminal détermine si les informations système des multiples cellules stockées par ce dernier comprennent les informations système des cellules cibles qui doivent être sélectionnées ou resélectionnées, les multiples cellules étant les multiples cellules que le terminal a réussi à héberger; si le résultat de la détermination est affirmatif, le terminal détermine que, si les informations système actuelles de la cellule cible diffusée par le réseau sont les mêmes que les informations système de la cellule cible stockée par le terminal, si le résultat de la détermination est affirmatif, une résidence cellulaire est mise en œuvre en utilisant les informations système stockées de la cellule cible. A l'aide de l'invention, le terminal peut utiliser les informations système stockées pour mettre d'abord en œuvre une résidence cellulaire et on peut réduire la probabilité d'erreur pour le terminal qui reçoit les informations système.
PCT/CN2010/077220 2009-12-11 2010-09-21 Procédé et terminal permettant de mettre en œuvre une résidence cellulaire Ceased WO2011069384A1 (fr)

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