WO2014101054A1 - 确定扰码冲突的方法和确定扰码冲突的装置 - Google Patents
确定扰码冲突的方法和确定扰码冲突的装置 Download PDFInfo
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- WO2014101054A1 WO2014101054A1 PCT/CN2012/087693 CN2012087693W WO2014101054A1 WO 2014101054 A1 WO2014101054 A1 WO 2014101054A1 CN 2012087693 W CN2012087693 W CN 2012087693W WO 2014101054 A1 WO2014101054 A1 WO 2014101054A1
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- Prior art keywords
- serving cell
- cell
- user equipment
- current serving
- handover
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000005259 measurement Methods 0.000 claims description 21
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 description 30
- 238000004891 communication Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 101001076732 Homo sapiens RNA-binding protein 27 Proteins 0.000 description 4
- 102100025873 RNA-binding protein 27 Human genes 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 101100465393 Homo sapiens PSMA1 gene Proteins 0.000 description 2
- 102100036042 Proteasome subunit alpha type-1 Human genes 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method for determining a scrambling code conflict and a device for determining a 4 code conflict.
- WCDMA Wideband Code Division Multiple Access
- the function of the downlink scrambling code is to distinguish different cells. Each cell is assigned only one primary scrambling code for distinguishing it from other cells.
- the number of cells is usually much larger than the number of scrambling code sets. Therefore, there is a problem of reusing the scrambling code, which may cause the cell handover of the user equipment to fail, and eventually the user equipment is dropped or the cell is updated.
- the neighboring cell mismatch problem of the primary serving cell may also cause the user equipment cell handover to fail, eventually causing the user equipment to drop calls or cell update.
- each base station measures the scrambling code of its neighboring cell, and compares it with its own scrambling code to determine whether there is a scrambling code conflict, so as to modify the scrambling code to reduce the probability of the user equipment dropping or cell updating.
- this method is difficult to implement scrambling code collision detection in a scene such as a macro station and a micro station of a normal WCDMA, and thus may cause a call drop or a cell update due to a handover failure.
- the embodiments of the present invention provide a method for determining a scrambling code conflict and a device for determining a scrambling code conflict, so as to reduce the chance of a dropped call or a probability of cell update of the user equipment, and ensure that the user equipment service is normal.
- an embodiment of the present invention provides a method for determining a scrambling code conflict, including: determining a serving cell before a handover of a user equipment, and determining a current serving cell of the user equipment;
- the determining, according to the comparison result, The presence of a scrambling code conflict between the current serving cell and the neighboring cell of the serving cell before the handover failure includes: if the comparison result is that the current serving cell and any neighboring cell of the serving cell before the handover failure are frequencies The same cell with the same scrambling code determines that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure.
- the method further includes: determining, by the user equipment, the time of accessing the current serving cell, and determining The time when the user equipment fails to switch; if the time interval in which the user equipment accesses the current serving cell and the handover failure occurs is within a set range, the comparing step is performed.
- the method further includes: modifying a scrambling code of the current serving cell, or modifying A scrambling code of a neighboring cell of the serving cell before the handover failure that has a scrambling code conflict with the current serving cell.
- the method further includes: determining, according to the comparison result, the current The serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the determining, according to the comparison result, the current The serving cell is the missing neighboring cell of the serving cell before the handover failure includes: if the comparison result is that the current serving cell and all neighboring cells of the serving cell before the handover failure are different cells with different frequencies And determining, that the current serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the method further includes: The current serving cell that is missed is added as a neighboring cell of the serving cell before the handover failure.
- the determining, before the user equipment fails to perform the handover, the serving cell includes: reading the circuit-switched radio access bearer CS RAB of the user equipment Translating block information or packet-switched radio access bearer PS RAB translation block information, the CS RAB translation block information or the PS RAB translation block information includes the user equipment occurring The identification information of the monthly good service community before the call.
- an eighth possible implementation Determining the current serving cell of the user equipment, including: determining, according to the radio resource control RRC access request sent by the user equipment, the current serving cell that is accessed after the user equipment is dropped, the RRC The current request cell identifier information is carried in the access request.
- the determining, before the user equipment fails to switch, the serving cell includes: receiving, according to the cell update sent by the user equipment The message determines that the user equipment has a serving cell before the cell update, and the cell update message carries the service 'j, the area identification information before the handover failure.
- the cell update message further includes the cause information of the cell update of the user equipment, if the cause information is that the radio link RL fails, the service radio bearer resets the TRB RST and the signaling radio.
- the comparing step is specifically: comparing the frequency and the scrambling code of the current serving cell and the switched target cell, if the comparison result is the current serving cell and the If the frequency of the target cell of the handover is the same as the scrambling code, it is determined that there is a scrambling code conflict between the current serving cell and the target cell of the handover.
- the method further includes: receiving, by the user equipment, a measurement report of the current serving cell, where the measurement report carries frequency information of the current serving cell And scrambling code information; determining a handover target cell for the user equipment in a neighboring cell of the serving cell before the handover failure.
- the embodiment of the present invention further provides an apparatus for determining a scrambling code conflict, including: a processor, configured to determine a serving cell before a handover of a user equipment, and determine a current serving cell of the user equipment;
- the processor is further configured to compare the current serving cell and the service before the handover failure a frequency and a scrambling code of the neighboring cell of the cell, determining, according to the comparison result, that the current serving cell has a scrambling code conflict with a neighboring cell of the serving cell before the handover failure
- the processor is specifically configured to: if the comparison result is that the current serving cell is the same frequency as any neighboring cell of the serving cell before the handover failure And the different cells with the same scrambling code determine that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure.
- the processor is further configured to: determine, when the user equipment accesses the current serving cell, And determining, by the user equipment, that the handover failure occurs; if the time interval in which the user equipment accesses the current serving cell and the handover failure occurs within a set range, performing the comparing step.
- the processor is further configured to: modify a scrambling code of the current serving cell, or And modifying, by the 4th code of the neighboring cell of the serving cell before the handover failure that conflicts with the current serving cell.
- the processor is further configured to: determine, according to the comparison result, The current serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the processor is further configured to: if The comparison result is that the current serving cell and the neighboring cell of the serving cell before the handover failure are different cells with different frequencies, and determining that the current serving cell is a missing neighboring cell of the serving cell before the handover failure .
- the processor is further used to : adding the missed current serving cell as a neighboring cell of the serving cell before the handover failure.
- the user equipment fails to perform the handover and accesses the current serving cell in an access manner
- the processor is specifically configured to: read the circuit switched radio access bearer CS RAB translation block information or packet switching of the user equipment
- the radio access bears the PS RAB translation block information
- the CS RAB translation block information or the PS RAB translation block information includes the serving cell identity information before the user equipment is dropped.
- the processor is specifically configured to: determine, according to the radio resource control RRC access request sent by the user equipment, the current serving cell that is accessed after the user equipment is dropped, and the RRC access request carries the The current month good service community identification information.
- the processor is specifically configured to: determine, according to the cell update message sent by the user equipment, that the user equipment generates a serving cell before the cell update, where the cell update message carries the service before the handover failure
- the cell identity information is determined according to the cell update message sent by the user equipment, where the user equipment generates a serving cell before the cell update, and the cell update message carries the service cell identity information before the handover failure.
- the cell update message further includes a cause information of the cell update of the user equipment, and if the cause information is RL failure, any one of TRB RST and SRB RST,
- the comparing step performed by the processor is specifically: comparing a frequency and a scrambling code of the current serving cell and the target cell of the handover, if the comparison result is the current serving cell and the target cell of the handover If the frequency and the scrambling code are the same, it is determined that there is a scrambling code conflict between the current serving cell and the target cell of the handover.
- the method further includes: a receiver, configured to receive a measurement report of the current serving cell reported by the user equipment, where the measurement report carries the current serving cell The frequency information and the scrambling code information; the processor is further configured to determine, by the user equipment, a handover target cell in a neighboring cell of the serving cell before the handover fails.
- the embodiment of the present invention further provides an apparatus for determining a scrambling code conflict, including: a determining unit, configured to determine a serving cell before a user equipment handover fails, and determine the use The current serving cell of the household device;
- the determining unit is further configured to determine, according to the comparison result of the comparing unit, that the current serving cell has a scrambling code conflict with a neighboring cell of the serving cell before the handover failure.
- the determining unit is specifically configured to: if a comparison result of the comparing unit is any neighboring cell of the current serving cell and the serving cell before the handover failure For different cells with the same frequency and the same scrambling code, it is determined that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure.
- the determining unit is further configured to: determine, when the user equipment accesses the current serving cell, And determining, by the user equipment, that the handover failure occurs; if the time interval in which the user equipment accesses the current serving cell and the handover failure occurs within a set range, the comparing unit performs the comparing step.
- the apparatus further includes: a first modifying unit, configured to modify the current serving cell The scrambling code, or modifying the scrambling code of the neighboring cell of the serving cell before the handover failure that conflicts with the presence of the current serving cell.
- the determining unit is further configured to: according to the The comparison result determines that the current serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the determining unit is specifically configured to:
- the comparison result of the comparison unit is that the current serving cell and the neighboring cell of the serving cell before the handover failure are different cells with different frequencies, and determining that the current serving cell is the serving cell before the handover failure Missing the neighborhood.
- the apparatus further includes: a second modifying unit, configured to add the current serving cell that is missed to be a serving cell before the handover fails Neighborhood.
- the determining unit is configured to: read the circuit switched radio access bearer CS RAB translation block information or packet switching of the user equipment, where the user equipment fails to perform the handover and accesses the current serving cell in an access manner.
- the radio access bears the PS RAB translation block information, and the CS RAB translation block information or the PS RAB translation block information includes the serving cell identity information before the user equipment is dropped.
- the determining unit is configured to: determine, according to the radio resource control RRC access request sent by the user equipment, the current serving cell that is accessed after the user equipment is dropped, and the RRC access request carries the The current serving cell identification information.
- the determining unit is specifically configured to: determine, according to the cell update message sent by the user equipment, that the user equipment occurs a cell before the cell update, the cell update message carrying the cell identifier information before the handover failure, determining, according to the cell update message sent by the user equipment, the serving cell before the cell update, the cell The update message carries the serving cell identity information before the handover failure.
- the cell update message further includes a cause information of the cell update of the user equipment, and if the cause information is RL failure, any one of TRB RST and SRB RST,
- the comparing step performed by the comparing unit is specifically: comparing a frequency and a scrambling code of the current serving cell and the target cell of the handover, if the comparison result is the current serving cell and the target cell of the handover If the frequency and the scrambling code are the same, it is determined that there is a scrambling code conflict between the current serving cell and the target cell of the handover.
- the receiving unit is configured to receive a measurement report of the current serving cell that is reported by the user equipment, where the measurement report carries frequency information and scrambling code information of the current serving cell; And determining, by the user equipment, a handover target cell in a neighboring cell of the serving cell before the handover fails.
- the method for determining a scrambling code conflict and the apparatus for determining a scrambling code conflict respectively determine a serving cell before a handover of a user equipment and a current serving cell that is accessed after a handover failure, by comparing the current serving cell and before the handover fails.
- the frequency and scrambling code of the neighboring cell of the serving cell determine that there is a scrambling code conflict between the current serving cell and the neighboring cell of the serving cell before the handover failure. Therefore, the probability of user equipment handover failure is reduced, thereby reducing the probability of dropped calls or the probability of cell update, and ensuring that the user equipment service is normal.
- FIG. 1 is a flowchart of an embodiment of a method for determining a scrambling code conflict according to the present invention
- FIG. 2 is a flowchart of still another embodiment of a method for determining a scrambling code conflict according to the present invention
- FIG. 4 is a schematic structural diagram of an apparatus for determining a scrambling code conflict according to an embodiment of the present invention
- FIG. 4 is a schematic diagram of another embodiment of a device for determining a scrambling code conflict according to the present invention
- FIG. 6 is a schematic structural diagram of still another embodiment of a device for determining a scrambling code conflict according to the present invention
- FIG. 7 is a schematic structural diagram of still another embodiment of a device for determining a scrambling code conflict according to the present invention.
- GSM Global System for Mobile Communications
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA single carrier FDMA
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- the user equipment involved in the present application may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or a wireless modem. Other processing equipment.
- the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
- RAN Radio Access Network
- the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
- a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment s
- the executor of the following method embodiments may be a base station controller, for example, may be a base station controller (BSC) in GSM or CDMA, or a radio network controller (RNC, Radio Network Controller) in WCDMA. It may also be a base station in various communication systems, for example, an eNodeB in an LTE system, a centralized server in various communication systems, and the like, which is not limited in this application.
- FIG. 1 is a flowchart of an embodiment of a method for determining a scrambling code conflict according to the present invention. As shown in FIG. 1, the method includes:
- the serving cell before the handover of the user equipment involved in the embodiment of the present invention may be a cell that performs a call behavior before the user equipment is dropped or the cell is updated.
- the serving cell before the handover of the user equipment may be configured with one or more neighbors. Community.
- the configuration information of the serving cell before the handover of the user equipment may include a neighboring cell list, where the identifier information of the neighboring cell of the serving cell before the handover failure, and the frequency of the neighboring cell (ie, the frequency point) and the 4th code information are included. .
- the user equipment may report the measurement report to the serving cell before the handover failure in the process of performing the call behavior, where the measurement report may carry other cells, usually the frequency and scrambling code of the neighboring cell of the serving cell. information.
- the serving cell before the handover fails may select a handover target cell for the user equipment according to the measurement report reported by the user equipment.
- the neighboring cell of the serving cell before the handover fails may have a scrambling code conflict with the handover target cell. Specifically, it means that a neighboring cell of the serving cell before the handover fails and the handover target cell are cells with the same frequency and the same scrambling code.
- the scrambling code conflict may cause a handover failure when the user equipment switches to the handover target cell, and a call drop phenomenon or a cell update occurs.
- the current serving cell of the user equipment involved in the embodiment of the present invention may be a serving cell that the user equipment re-accesses after the handover fails. Specifically, after the user equipment fails to switch, the user equipment may drop the call, and the user equipment may access the current serving cell by initiating an RRC access request, or after the user equipment fails to switch, the cell update may be performed to update the current serving cell.
- the circuit switch radio access bearer (CS RAB) can be read or blocked.
- the primary serving cell identity information before the dropped call occurs on the user equipment included in the packet switching radio access bearer (PS RAB).
- the current serving cell identity information carried in the radio resource control (RRC) access request may be re-initiated after the user equipment is dropped.
- the current serving cell is a cell that is re-accessed after the user fails to switch.
- the handover fails and the cell update phenomenon occurs.
- the cell identifier information before the handover failure may be obtained from the cell update message sent by the user equipment. If the cell update of the user equipment is successful, the identifier information of the current monthly service cell newly accessed after the cell update of the user equipment is completed may also be performed.
- the frequency and the scrambling code of the serving cell before the current serving cell and the user equipment fail to switch may be compared, and according to the comparison result, it is determined that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure.
- the serving cell before the handover failure of the user equipment and the current serving cell accessed after the handover failure may be determined according to the International Mobile Subscriber Identity (IMSI) of the user equipment.
- IMSI International Mobile Subscriber Identity
- the frequency point and the scrambling code of the neighboring cell of the serving cell before the handover failure may be determined according to the configuration information of the serving cell before the handover failure.
- the Global Cell Identity (GCI) is used to determine whether the neighboring cell and the current serving cell are the same cell.
- the current serving cell of the user equipment and a neighboring cell in the neighboring cell of the serving cell before the handover failure are different cells with the same frequency and the same frequency, the current serving cell of the user equipment and the handover failure may be determined. There is a scrambling code conflict in the neighboring cell of the serving cell.
- the neighboring cell of the serving cell before the handover failure that conflicts with the current serving cell has a handover failure.
- Switching target cell Therefore, it can also be determined whether there is a scrambling code conflict by judging whether the handover target cell and the current serving cell that are failed to handover are different cells of the same frequency and the same frequency.
- the user equipment is switched to the handover target cell.
- the serving cell before the handover failure occurs is the cell CellA, that is, the serving cell before the user equipment is dropped or the cell is updated.
- CellB and CellA have been configured with the neighbor relationship.
- CellA and CellC have no neighbor relationship. Among them, CellB and CellC have the same frequency point f1 and the same 4 special code PSC 1.
- the call behavior is performed in the CellA before the user equipment is dropped or the cell is updated, that is, the CellA is the serving cell before the user equipment fails to switch.
- the user equipment reports the report to the RNC.
- the measurement report includes the CellC frequency and the scrambling code PSC1. Since CellA's neighboring area includes CellB, CellB's frequency f1 and scrambling code are PSC1. Therefore, the RNC can determine the user setting.
- the switch is ready to switch to CellB, that is, the handover target cell is CellB.
- the RNC cannot distinguish the cells that measure the actual source of the advertisement, and thus the erroneous decision of the RNC handover target cell occurs.
- the RNC may instruct the user equipment to switch to the CellB, causing the link of the user equipment to fail, causing the user equipment to drop or change the cell.
- the RNC may record the IMSI information before the user equipment is dropped or the cell is updated, the serving cell (ie, CellA) before the user equipment is dropped or the cell is updated, and the handover target cell (ie, CellB). If the user equipment successfully initiates a cell update or an RRC access request within a certain time, the RNC may record the IMSI information of the user equipment (to determine the same user equipment after the call drop or the cell update and the RRC access or the cell update). ), the current serving cell (ie, CellC) after the RRC access or the cell update.
- the CellC can be determined. There is a scrambling code conflict with CellB.
- the time interval between the user equipment accessing the current serving cell and the handover failure may be further determined, where the time of the call drop or the cell update may be, for example, from :
- the CS RAB translation block information of the user equipment or the PS RAB translation block information is obtained.
- the time when the user equipment accesses the current serving cell may be based on the IMSI query of the user equipment. If the time interval between the user equipment accessing the current serving cell and the occurrence of the call drop or the cell update is within the set range, it may be determined that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover fails.
- the probability of the user equipment switching failure may be reduced by modifying the current serving cell or the neighboring cell of the serving cell before the handover failure that conflicts with the current serving cell.
- the probability of dropped calls of the user equipment or the probability of cell update ensures that the user equipment service is normal.
- the current serving cell may be determined as a missing neighboring cell of the serving cell before the handover failure according to the comparison result. Specifically, if the current serving cell and all the neighboring cells of the serving cell before the handover failure are different cells with different frequencies, the current serving cell may be determined as the missing neighboring cell of the serving cell before the handover failure.
- determining the missing neighboring cell of the serving cell before the current serving cell is a handover failure
- the probability of the user equipment switching failure is reduced by adding the missing neighboring cell to the primary serving cell, thereby reducing the probability of dropped calls or cell update of the user equipment.
- the probability that the current serving cell to be missed is added as the neighboring cell of the serving cell before the handover fails, thereby ensuring that the user equipment service is normal.
- the communication system can be used to detect the same frequency physical cell identifier (PCI) collision detection of LTE, or the same broadcast cell control channel (BCCH) of GSM and the base station recognize another 1 J code (base Transmitter station identity code, BSIC ) Collision detection, not here - repeat.
- PCI physical cell identifier
- BCCH broadcast cell control channel
- BSIC base Transmitter station identity code
- the method for determining a scrambling code conflict determines the serving cell before the handover of the user equipment and the current serving cell after the handover fails, and compares the frequency of the neighboring cell of the serving cell before the current serving cell and the handover failure. And the scrambling code, to determine that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure. Therefore, the probability of the handover failure of the user equipment is reduced, and the probability of dropped calls or the probability of cell update is reduced, so that the service of the user equipment is normal.
- FIG. 2 is a flowchart of still another embodiment of a method for determining a scrambling code conflict according to the present invention. As shown in FIG.
- a handover of a user equipment fails due to a scrambling code conflict, thereby causing a call drop of the user equipment, and the user equipment
- the scenario of re-initiating a call to access the current serving cell is described as an example.
- the method includes:
- S201 Read the CS RAB translation block information or the PS RAB translation block information of the user equipment, and the CS RAB translation block information or the PS RAB translation block information includes the service 'J, the area identification information before the user equipment is dropped. The time information of the dropped call of the user equipment.
- the serving cell before the user equipment fails to be dropped is the serving cell before the handover of the user equipment according to the embodiment of the present invention.
- the CS RAB translation block or the PS RAB translation block records the translation information of the current call, and if the translation is displayed as an abnormal translation (the user equipment involved in the embodiment of the present invention is dropped),
- the IMSI of the user equipment may be used to query whether the user equipment initiates an RRC call request connection within a Thd_n time (the Thd_n may set a default value, for example, 30s). If the Thd_n exceeds 30S, the call record may be discarded. That is, the operation after S202 is not performed. That is to say, when the user equipment accesses the current serving cell and the time interval at which the call is dropped is within the set range, it is determined that there is a scrambling code conflict between the current serving cell and the neighboring cell of the serving cell before the call drop occurs.
- the RRC access request is sent by the RRC access request, and the RRC access request carries the current serving cell identity information, and the frequency information and the scrambling code information of the current cell.
- the neighboring cell list information is read in the configuration information of the serving cell before the call drop occurs. If the current serving cell and any of the neighboring cells are different cells with the same frequency and the same scrambling code, determining the current serving cell and the occurrence The neighbor of the serving cell before the dropped call has a scrambling code collision.
- the neighbor list includes a first-order neighbor list, that is, the same-frequency and inter-frequency neighbor list ⁇ Celli, Celln ⁇ including the same system as the serving cell before the call-out occurs, excluding the different system neighbors.
- Area list, the frequency of the first-order neighbor and the scrambling code X ⁇ ( fi, PSCi ) ,...,(fn, PSCn) ⁇ , if the frequency and scrambling code of the current serving cell (f1 , PSC1 ), (f1, PSC1) is not equal to any of the sets X (fi, PSCi), and the ID of the current serving cell does not exist in ⁇ Celli, Celln ⁇ , then the current serving cell is the serving cell before the call drop occurs. Missing the neighboring area.
- the user equipment fails to switch and the user equipment is dropped due to the scrambling code conflict, and the serving cell before the handover of the user equipment and the current serving cell after the handover failure are respectively determined.
- the frequency and the scrambling code of the neighboring cell of the serving cell and the serving cell before the handover failure are determined according to the comparison result, and the current serving cell and the neighboring cell of the serving cell before the handover failure have a scrambling code conflict, and then the current serving cell or the existing cell may be modified.
- Scrambling code conflict The operation of the scrambling code of the neighboring cell; or, adding a missing neighboring cell to the serving cell before the handover fails.
- FIG. 3 is a flowchart of another embodiment of a method for determining a scrambling code conflict according to the present invention, as shown in FIG.
- the method includes:
- the serving cell before the cell update of the user equipment is the serving cell before the handover of the user equipment according to the embodiment of the present invention.
- the cell update message may further include: a cause information.
- the cause information is not a radio link (RL) failure, a traffic radio bearer reset (TrB RST), and a signalling radio bearer reset (SRB RST)
- the cell update message may be discarded, and the steps subsequent to S301 are not performed.
- the frequency and scrambling code of the current serving cell and the target cell of the handover may be compared, and if the comparison result is the frequency of the current serving cell and the target cell of the handover, If the scrambling codes are the same, it is determined that there is a scrambling code conflict between the current serving cell and the target cell of the handover.
- the cell update message carries the serving cell identity information before the cell update of the user equipment.
- the neighboring cell list information is read in the configuration information of the serving cell before the cell update, and if the current serving cell and any neighboring cell of the serving cell before the cell update are different cells with the same frequency and the same scrambling code, determining The current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the cell update.
- the user equipment fails to switch and the cell is updated due to the scrambling code conflict, and the serving cell before the handover of the user equipment and the current serving cell after the handover failure are respectively determined, and the current service is compared.
- the frequency and the scrambling code of the neighboring cell of the serving cell before the handover fails, and determining, according to the comparison result, that there is a scrambling code conflict between the current serving cell and the neighboring cell of the serving cell before the handover failure, and then the current service, the area, or the presence of the interference may be modified.
- the operation of the scrambling code of the neighboring cell of the code collision; or, adding a missing neighboring cell to the serving cell before the handover fails.
- FIG. 4 is a schematic structural diagram of an apparatus for determining a scrambling code conflict according to the present invention.
- the apparatus for determining a scrambling code conflict includes: a processor 41;
- the processor 41 is configured to determine a serving cell before the user equipment fails to handover, and determine a current serving cell of the user equipment;
- the processor 41 is further configured to compare the frequency and the scrambling code of the neighboring cell of the serving cell before the current serving cell and the handover failure, and determine, according to the comparison result, that the current serving cell has a scrambling code conflict with the neighboring cell of the serving cell before the handover failure.
- the processor 41 may be specifically configured to: if the comparison result is that the current serving cell and the neighboring cell of the serving cell before the handover failure are different cells with the same frequency and the same scrambling code, determining the current serving cell and the handover failure There is a scrambling code conflict in the neighboring cell of the previous serving cell.
- the processor 41 is further configured to: determine a time when the user equipment accesses the current serving cell, and determine a time when the user equipment fails to switch; and if the user equipment accesses the current serving cell and the handover fails, the time interval is set. Within the specified range, the comparison step is performed.
- the processor 41 is further configured to: modify a scrambling code of the current serving cell, or modify a scrambling code of a neighboring cell of the serving cell before the handover failure that conflicts with the current serving cell.
- the processor 41 is further configured to: determine, according to the comparison result, that the current serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the processor 41 is further configured to: determine, if the comparison result is that the current serving cell and all neighboring cells of the serving cell before the handover failure are different cells with different frequencies, determine the current serving cell. The missing neighboring cell of the serving cell before the handover fails.
- the processor 41 is further configured to: add the missed current serving cell as a neighboring cell of the serving cell before the handover fails.
- the processor 41 may be specifically configured to: read the circuit switched radio access bearer CS RAB translation block information or group of the user equipment.
- the exchange radio access bearer PS RAB translation block information, the CS RAB translation block information or the PS RAB translation block information includes the serving cell identity information before the user equipment drops.
- the processor 41 is further configured to: determine, according to the radio resource control RRC access request sent by the user equipment, the current serving cell that is accessed after the user equipment is dropped, and the RRC access request carries the current serving cell identity information. .
- the processor 41 may be further configured to: determine, according to the cell update message sent by the user equipment, the serving cell, the cell before the cell update occurs by the user equipment.
- the update message carries the serving cell identity information before the handover failure, and determines, according to the cell update message sent by the user equipment, the serving cell before the cell update occurs, and the cell update message carries the service cell identity information before the handover failure.
- the cell update message further includes the cause information of the cell update of the user equipment. If the cause information is RL failure, any one of the TRB RST and the SRB RST, the comparing step performed by the processor 41 may be specifically: If the frequency and the scrambling code of the current serving cell and the handover target cell are the same, the current serving cell and the handover target cell have a scrambling code conflict.
- FIG. 5 is a schematic structural diagram of another apparatus for determining a scrambling code conflict according to the present invention. As shown in FIG. 5, on the basis of the embodiment shown in FIG. 4, the apparatus for determining a scrambling code conflict may further include:
- the receiver 42 is configured to receive a measurement report of the current serving cell reported by the user equipment, where the measurement report carries frequency information and scrambling code information of the current serving cell.
- the processor 41 is further configured to determine, by the user equipment, a handover target cell in a neighboring cell of the serving cell before the handover fails.
- the apparatus for determining the scrambling code conflict provided in this embodiment may be a base station controller, for example, may be a BSC in GSM or CDMA, an RNC in WCDMA, or a base station in various communication systems, for example: eNodeB in LTE system, can also be used for various communication systems A centralized server or the like.
- a base station controller for example, may be a BSC in GSM or CDMA, an RNC in WCDMA, or a base station in various communication systems, for example: eNodeB in LTE system, can also be used for various communication systems A centralized server or the like.
- FIG. 6 is a schematic structural diagram of still another embodiment of determining a scrambling code conflict according to the present invention.
- the apparatus for determining a scrambling code conflict includes: a determining unit 61 and a comparing unit 62; Determining a serving cell before the user equipment handover fails, and determining a current serving cell of the user equipment;
- the comparing unit 62 is further configured to compare the frequency of the neighboring cell of the current serving cell and the serving cell before the handover failure, and the ⁇ ⁇ code;
- the determining unit 61 is further configured to determine, according to the comparison result of the comparing unit 62, that the current serving cell has a scrambling code conflict with a neighboring cell of the serving cell before the handover failure.
- the determining unit 61 may be specifically configured to: if the comparison result of the comparing unit 62 is that the current serving cell and the neighboring cell of the serving cell before the handover failure are different cells with the same frequency and the same scrambling code, determine the current service.
- the cell has a scrambling code collision with the neighboring cell of the serving cell before the handover failure.
- the determining unit 61 is further configured to: determine a time when the user equipment accesses the current serving cell, and determine a time when the user equipment fails to switch; and if the user equipment accesses the current serving cell and the handover fails, the time interval is set. Within the predetermined range, comparison unit 62 performs the comparison step.
- FIG. 7 is a schematic structural diagram of another apparatus for determining a scrambling code conflict according to the present invention. As shown in FIG. 7, the apparatus for determining a scrambling code conflict may further include:
- the first modifying unit 63 is configured to modify a scrambling code of the current serving cell, or modify a scrambling code of a neighboring cell of the serving cell before the handover failure that conflicts with the current serving cell.
- the determining unit 61 is further configured to: determine, according to the comparison result of the comparing unit 62, that the current serving cell is a missing neighboring cell of the serving cell before the handover fails.
- the determining unit 61 may be specifically configured to: if the comparison result of the comparing unit 62 is that the current serving cell and all neighboring cells of the serving cell before the handover failure are different cells with different frequencies, determining that the current serving cell is a handover failure The previous serving cell missed the neighboring area.
- the device may further include: a second modifying unit 64, configured to add the missed current serving cell as a neighboring cell of the serving cell before the handover fails.
- the determining unit 61 may be specifically configured to: read the circuit switched radio access bearer CS RAB translation block information or packet of the user equipment.
- the exchange radio access bearer PS RAB translation block information, the CS RAB release block information or the PS RAB release block information includes the serving cell identity information before the user equipment drops.
- the determining unit 61 may be specifically configured to: determine, according to the radio resource control RRC access request sent by the user equipment, the current serving cell that is accessed after the user equipment is dropped, and the RRC access request carries the current serving cell identity information.
- the determining unit 61 may be specifically configured to: determine, according to the cell update message sent by the user equipment, the serving cell before the cell update, the cell update The message carries the serving cell identity information before the handover failure, and determines the serving cell before the cell update occurs by the user equipment according to the cell update message sent by the user equipment.
- the cell update message carries the service cell identity information before the handover failure.
- the cell update message further includes a cause information of the cell update of the user equipment. If the cause information is RL failure, any one of the TRB RST and the SRB RST, the comparing step that the comparing unit 62 can perform is: If the frequency and the scrambling code of the current serving cell and the handover target cell are the same, the current serving cell and the handover target cell have a scrambling code conflict.
- the device may further include:
- the receiving unit 65 is configured to receive a measurement report of the current serving cell reported by the user equipment, where the measurement report carries frequency information and scrambling code information of the current serving cell.
- the determining unit 61 may be further configured to determine a handover target cell for the user equipment in a neighboring cell of the serving cell before the handover fails.
- the apparatus for determining the scrambling code conflict provided in this embodiment may be a base station controller, for example, may be a BSC in GSM or CDMA, an RNC in WCDMA, or a base station in various communication systems, for example:
- the eNodeB in the LTE system can also be a centralized server or the like in various communication systems. The related description in the method embodiment is not described here.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection between the various components shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software function unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM, Random Access Memory ), a variety of media such as a disk or a disc that can store program code.
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Abstract
本发明实施例涉及一种确定扰码冲突的方法和确定扰码冲突的装置。方法包括:确定用户设备切换失败之前的服务小区,并确定所述用户设备的当前服务小区;比较所述当前服务小区和所述切换失败之前的服务小区的邻区的频率和扰码,根据所述比较结果确定所述当前服务小区与所述切换失败之前的服务小区的邻区存在扰码冲突。降低用户设备切换失败的几率,保证用户设备业务正常进行。
Description
确定扰码冲突的方法和确定扰码冲突的装置
技术领域 本发明实施例涉及通信技术领域, 特别涉及一种确定扰码冲突的方法和 确定 4尤码冲突的装置。 背景技术 在宽带码多分址( Wideband Code Division Multiple Access, WCDMA ) 系统中, 在下行链路中, 下行扰码的功能是用于区分不同的小区。 每个小区 仅分配一个主扰码用于与其他小区区分。 但是在 WCDMA网络中, 小区的数 量通常远远大于扰码集的数量, 因此存在扰码重用的问题, 可能导致用户设 备小区切换失败, 最终导致用户设备掉话或小区更新; 另外, 用户设备的主 服务小区的邻区漏配问题也可能导致用户设备小区切换失败, 最终导致用户 设备掉话或小区更新。
现有技术中, 每个基站测量其邻区的扰码, 并与自身的扰码比较来判断 是否存在扰码冲突, 以修改扰码降低用户设备掉话或小区更新的几率。 然而, 这种方法在例如普通 WCDMA的宏站和微站等场景难于实现扰码冲突检测, 进而会由于切换失败而导致掉话或小区更新。 发明内容 本发明实施例提供一种确定扰码冲突的方法和确定扰码冲突的装置, 以 降低用户设备的掉话几率或小区更新的几率, 保证用户设备业务正常进行。
第一方面, 本发明实施例提供了一种确定扰码冲突的方法, 包括: 确定用户设备切换失败之前的服务小区, 并确定所述用户设备的当前服 务小区;
比较所述当前服务小区和所述切换失败之前的服务小区的邻区的频率和 扰码, 根据所述比较结果确定所述当前服务小区与所述切换失败之前的服务 小区的邻区存在扰码冲突。
在第一方面的第一种可能的实现方式中, 所述根据所述比较结果确定所
述当前服务小区与所述切换失败之前的服务小区的邻区存在扰码冲突, 包括: 若所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的任一 邻区为频率相同、 扰码相同的不同小区, 则确定所述当前服务小区与所述切 换失败之前的服务小区的该邻区存在扰码冲突。
结合第一方面或第一方面的第一种可能的实现方式, 在第二种可能的实 现方式中, 所述方法还包括: 确定所述用户设备接入所述当前服务小区的时 间, 并确定所述用户设备发生切换失败的时间; 若所述用户设备接入所述当 前服务小区与发生切换失败的时间间隔在设定范围内,则执行所述比较步骤。
结合第一方面或第一方面的第一种、 第二种可能的实现方式, 在第三种 可能的实现方式中, 所述方法还包括: 修改所述当前服务小区的扰码, 或者, 修改与所述当前服务小区存在扰码冲突的所述切换失败之前的服务小区的邻 区的扰码。
结合第一方面或第一方面的第一种、 第二种、 第三种可能的实现方式, 在第四种可能的实现方式中, 所述方法还包括: 根据所述比较结果确定所述 当前服务小区为所述切换失败之前的服务小区的漏配邻区。
结合第一方面或第一方面的第一种、 第二种、 第三种和第四种可能的实 现方式, 在第五种可能的实现方式中, 所述根据所述比较结果确定所述当前 服务小区为所述切换失败之前的服务小区的漏配邻区, 包括: 若所述比较结 果为所述当前服务小区与所述切换失败之前的服务小区的所有邻区均为频率 不同的不同小区, 则确定所述当前服务小区为所述切换失败之前的服务小区 的漏配邻区。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种和第五种 可能的实现方式, 在第六种可能的实现方式中, 所述方法还包括: 将漏配的 所述当前服务小区添加为所述切换失败之前的服务小区的邻区。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种可能的实现方式, 在第七种可能的实现方式中, 若所述用户设备发 生切换失败并以接入方式接入到所述当前服务小区, 则所述确定用户设备发 生切换失败之前的服务小区, 包括: 读取所述用户设备的电路交换无线接入 承载 CS RAB译放块信息或分组交换无线接入承载 PS RAB译放块信息, 所 述 CS RAB译放块信息或所述 PS RAB译放块信息包括所述用户设备发生掉
话前的月良务小区标识信息。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种和第七种可能的实现方式, 在第八种可能的实现方式中, 所述确定所 述用户设备的当前服务小区, 包括: 根据所述用户设备发送的无线资源控制 RRC接入请求确定所述用户设备发生掉话后接入的所述当前服务小区, 所述 RRC接入请求中携带所述当前服务小区标识信息。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种和第八种可能的实现方式, 在第九种可能的实现方式中, 若 所述用户设备发生切换失败并以小区更新方式更新至所述当前服务小区, 则 所述确定用户设备切换失败之前的服务小区, 包括: 根据所述用户设备发送 的小区更新消息确定所述用户设备发生小区更新前的服务小区, 所述小区更 新消息中携带所述切换失败之前的服务' j、区标识信息。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种、 第八种和第九种可能的实现方式, 在第十种可能的实现方 式中, 所述小区更新消息中还包括所述用户设备发生小区更新的原因信息, 若所述原因信息为无线链路 RL 失败, 业务无线承载复位 TRB RST和信令 无线承载复位 SRB RST中的任一种, 所述比较步骤具体为: 比较所述当前 服务小区和所述切换的目标小区的频率和扰码, 若所述比较结果为所述当前 服务小区和所述切换的目标小区的频率和扰码相同, 则确定当前服务小区和 所述切换的目标小区存在扰码冲突。
结合第一方面或第一方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种、 第七种、 第八种、 第九种和第十种可能的实现方式, 在第十一种 可能的实现方式中, 所述方法还包括: 接收所述用户设备上报的所述当前服 务小区的测量报告, 所述测量报告中携带所述当前服务小区的频率信息和扰 码信息; 在所述切换失败之前的服务小区的邻区中为所述用户设备确定切换 目标小区。
第二方面, 本发明实施例还提供一种确定扰码冲突的装置, 包括: 处理器, 用于确定用户设备切换失败之前的服务小区, 并确定所述用户 设备的当前服务小区;
所述处理器, 还用于比较所述当前服务小区和所述切换失败之前的服务
小区的邻区的频率和扰码, 根据所述比较结果确定所述当前服务小区与所述 切换失败之前的服务小区的邻区存在扰码冲突
在第二方面的第一种可能的实现方式中, 所述处理器具体用于: 若所述 比较结果为所述当前服务小区与所述切换失败之前的服务小区的任一邻区为 频率相同、 扰码相同的不同小区, 则确定所述当前服务小区与所述切换失败 之前的服务小区的该邻区存在扰码冲突。
结合第二方面或第二方面的第一种可能的实现方式, 在第二种可能的实 现方式中, 所述处理器还用于: 确定所述用户设备接入所述当前服务小区的 时间, 并确定所述用户设备发生切换失败的时间; 若所述用户设备接入所述 当前服务小区与发生切换失败的时间间隔在设定范围内, 则执行所述比较步 骤。
结合第二方面或第二方面的第一种、 第二种可能的实现方式, 在第三种 可能的实现方式中, 所述处理器还用于: 修改所述当前服务小区的扰码, 或 者, 修改与所述当前服务小区存在扰码冲突的所述切换失败之前的服务小区 的邻区的 4尤码。
结合第二方面或第二方面的第一种、 第二种、 第三种可能的实现方式, 在第四种可能的实现方式中, 所述处理器还用于: 根据所述比较结果确定所 述当前服务小区为所述切换失败之前的服务小区的漏配邻区。
结合第二方面或第二方面的第一种、 第二种、 第三种和第四种可能的实 现方式, 在第五种可能的实现方式中, 所述处理器还用于: 若所述比较结果 为所述当前服务小区与所述切换失败之前的服务小区的所有邻区均为频率不 同的不同小区, 则确定所述当前服务小区为所述切换失败之前的服务小区的 漏配邻区。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种和第五种 可能的实现方式, 在第六种可能的实现方式中, 所述处理器还用于: 将漏配 的所述当前服务小区添加为所述切换失败之前的服务小区的邻区。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种可能的实现方式, 在第七种可能的实现方式中, 若所述用户设备发 生切换失败并以接入方式接入到所述当前服务小区,则所述处理器具体用于: 读取所述用户设备的电路交换无线接入承载 CS RAB译放块信息或分组交换
无线接入承载 PS RAB译放块信息,所述 CS RAB译放块信息或所述 PS RAB 译放块信息包括所述用户设备发生掉话前的服务小区标识信息。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种和第七种可能的实现方式, 在第八种可能的实现方式中, 所述处理器 具体用于:根据所述用户设备发送的无线资源控制 RRC接入请求确定所述用 户设备发生掉话后接入的所述当前服务小区,所述 RRC接入请求中携带所述 当前月良务小区标识信息。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种和第八种可能的实现方式, 在第九种可能的实现方式中, 所 述处理器具体用于: 根据所述用户设备发送的小区更新消息确定所述用户设 备发生小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前 的服务小区标识信息根据所述用户设备发送的小区更新消息确定所述用户设 备发生小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前 的服务小区标识信息。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种、 第八种和第九种可能的实现方式, 在第十种可能的实现方 式中, 所述小区更新消息中还包括所述用户设备发生小区更新的原因信息, 若所述原因信息为 RL 失败, TRB RST和 SRB RST中的任一种, 则所述处 理器执行的所述比较步骤具体为: 比较所述当前服务小区和所述切换的目标 小区的频率和扰码, 若所述比较结果为所述当前服务小区和所述切换的目标 小区的频率和扰码相同, 则确定当前服务小区和所述切换的目标小区存在扰 码冲突。
结合第二方面或第二方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种、 第七种、 第八种、 第九种和第十种可能的实现方式, 在第十一种 可能的实现方式中, 还包括: 接收器, 用于接收所述用户设备上报的所述当 前服务小区的测量报告, 所述测量报告中携带所述当前服务小区的频率信息 和扰码信息; 所述处理器, 还用于在所述切换失败之前的服务小区的邻区中 为所述用户设备确定切换目标小区。
第三方面, 本发明实施例还提供一种确定扰码冲突的装置, 包括: 确定单元, 用于确定用户设备切换失败之前的服务小区, 并确定所述用
户设备的当前服务小区;
比较单元, 还用于比较所述当前服务小区和所述切换失败之前的服务小 区的邻区的频率和扰码;
所述确定单元还用于, 根据所述比较单元的所述比较结果确定所述当前 服务小区与所述切换失败之前的服务小区的邻区存在扰码冲突。
在第三方面的第一种可能的实现方式中, 所述确定单元具体用于: 若所 述比较单元的比较结果为所述当前服务小区与所述切换失败之前的服务小区 的任一邻区为频率相同、 扰码相同的不同小区, 则确定所述当前服务小区与 所述切换失败之前的服务小区的该邻区存在扰码冲突。
结合第三方面或第三方面的第一种可能的实现方式, 在第二种可能的实 现方式中, 所述确定单元还用于: 确定所述用户设备接入所述当前服务小区 的时间, 并确定所述用户设备发生切换失败的时间; 若所述用户设备接入所 述当前服务小区与发生切换失败的时间间隔在设定范围内, 则所述比较单元 执行所述比较步骤。
结合第三方面或第三方面的第一种、 第二种可能的实现方式, 在第三种 可能的实现方式中, 所述装置还包括: 第一修改单元, 用于修改所述当前服 务小区的扰码, 或者, 修改与所述当前服务小区存在扰码冲突的所述切换失 败之前的服务小区的邻区的扰码。
结合第三方面或第三方面的第一种、 第二种、 第三种可能的实现方式, 在第四种可能的实现方式中, 所述确定单元还用于: 根据所述比较单元的所 述比较结果确定所述当前服务小区为所述切换失败之前的服务小区的漏配邻 区。
结合第三方面或第三方面的第一种、 第二种、 第三种和第四种可能的实 现方式, 在第五种可能的实现方式中, 所述确定单元具体用于: 若所述比较 单元的所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的 所有邻区均为频率不同的不同小区, 则确定所述当前服务小区为所述切换失 败之前的服务小区的漏配邻区。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种和第五种 可能的实现方式, 在第六种可能的实现方式中, 所述装置还包括: 第二修改 单元, 用于将漏配的所述当前服务小区添加为所述切换失败之前的服务小区
的邻区。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种可能的实现方式, 在第七种可能的实现方式中, 若所述用户设备发 生切换失败并以接入方式接入到所述当前服务小区, 则所述确定单元具体用 于: 读取所述用户设备的电路交换无线接入承载 CS RAB译放块信息或分组 交换无线接入承载 PS RAB译放块信息, 所述 CS RAB译放块信息或所述 PS RAB译放块信息包括所述用户设备发生掉话前的服务小区标识信息。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种和第七种可能的实现方式, 在第八种可能的实现方式中, 所述确定单 元具体用于:根据所述用户设备发送的无线资源控制 RRC接入请求确定所述 用户设备发生掉话后接入的所述当前服务小区,所述 RRC接入请求中携带所 述当前服务小区标识信息。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种和第八种可能的实现方式, 在第九种可能的实现方式中, 若 所述用户设备发生切换失败并以小区更新方式更新至所述当前服务小区, 所 述确定单元具体用于: 根据所述用户设备发送的小区更新消息确定所述用户 设备发生小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之 前的服务小区标识信息根据所述用户设备发送的小区更新消息确定所述用户 设备发生小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之 前的服务小区标识信息。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种、 第五种、 第六种、 第七种、 第八种和第九种可能的实现方式, 在第十种可能的实现方 式中, 所述小区更新消息中还包括所述用户设备发生小区更新的原因信息, 若所述原因信息为 RL 失败, TRB RST和 SRB RST中的任一种, 则所述比 较单元执行的所述比较步骤具体为: 比较所述当前服务小区和所述切换的目 标小区的频率和扰码, 若所述比较结果为所述当前服务小区和所述切换的目 标小区的频率和扰码相同, 则确定当前服务小区和所述切换的目标小区存在 扰码冲突。
结合第三方面或第三方面的第一种、 第二种、 第三种、 第四种、 第五种 和第六种、 第七种、 第八种、 第九种和第十种可能的实现方式, 在第十一种
可能的实现方式中, 接收单元, 用于接收所述用户设备上报的所述当前服务 小区的测量报告, 所述测量报告中携带所述当前服务小区的频率信息和扰码 信息; 所述确定单元, 还用于在所述切换失败之前的服务小区的邻区中为所 述用户设备确定切换目标小区。
本发明实施例提供的确定扰码冲突的方法和确定扰码冲突的装置, 分别 确定用户设备切换失败之前的服务小区和切换失败后接入的当前服务小区, 通过比较当前服务小区和切换失败之前的服务小区的邻区的频率和扰码, 来 确定当前服务小区与切换失败之前的服务小区的邻区存在扰码冲突。 从而降 低用户设备切换失败的几率, 进而降低掉话几率或小区更新的几率, 保证用 户设备业务正常进行。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明提供的确定扰码冲突的方法一个实施例的流程图; 图 2为本发明提供的确定扰码冲突的方法又一个实施例的流程图; 图 3为本发明提供的确定扰码冲突的方法另一个实施例的流程图; 图 4为本发明提供的确定扰码冲突的装置一个实施例的结构示意图; 图 5为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图; 图 6为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图; 图 7为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
统, 例如当前 2G, 3G通信系统和下一代通信系统, 例如全球移动通信系统 ( GSM , Global System for Mobile communications ), 码分多址 ( CDMA, Code Division Multiple Access ) 系统, 时分多址(TDMA, Time Division Multiple Access )系统, 宽带码分多址( WCDMA, Wideband Code Division Multiple Access Wireless ), 频分多址 ( FDMA, Frequency Division Multiple Addressing )系统,正交频分多址( OFDMA, Orthogonal Frequency-Division Multiple Access ) 系统, 单载波 FDMA ( SC-FDMA ) 系统, 通用分组无线业 务(GPRS, General Packet Radio Service ) 系统, 长期演进(LTE, Long Term Evolution ) 系统, 以及其他此类通信系统。
本申请中涉及的用户设备, 可以是无线终端也可以是有线终端, 无线终 端可以是指向用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手 持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线 接入网 (例如, RAN , Radio Access Network ) 与一个或多个核心网进行通 信, 无线终端可以是移动终端, 如移动电话(或称为"蜂窝"电话)和具有移动 终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者 车载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人通信业 务 ( PCS, Personal Communication Service ) 电话、 无绳电话、 会话发起 协议(SIP )话机、 无线本地环路(WLL, Wireless Local Loop )站、 个人数 字助理(PDA, Personal Digital Assistant )等设备。 无线终端也可以称为系 统、订户单元( Subscriber Unit )、订户站( Subscriber Station ),移动站( Mobile Station )、移动台( Mobile )、远程站( Remote Station )、接入点( Access Point )、 远程终端( Remote Terminal )、接入终端( Access Terminal )、用户终端( User Terminal ), 用户代理( User Agent )、 用户设备( User Device )、 或用户装备 ( User Equipment s
以下各方法实施例的执行主体可以为基站控制器, 例如: 可以是 GSM 或 CDMA中的基站控制器( BSC, base station controller ),也可以是 WCDMA 中的无线网络控制器(RNC, Radio Network Controller ), 还可以是各种通 信系统中的基站, 例如: LTE 系统中的 eNodeB, 还可以为各种通信系统中 的集中式服务器等, 本申请并不限定。
图 1为本发明提供的确定扰码冲突的方法一个实施例的流程图, 如图 1 , 该方法包括:
S101、 确定用户设备切换失败之前的服务小区, 并确定用户设备的当前 服务小区。
S102、 比较当前服务小区和切换失败之前的服务小区的邻区的频率和扰 码, 根据比较结果确定当前服务小区与切换失败之前的服务小区的邻区存在 扰码冲突。
本发明实施例中涉及的用户设备切换失败之前的服务小区, 可以为用户 设备发生掉话或小区更新之前进行呼叫行为的小区, 用户设备切换失败之前 的服务小区可以配置有一个或多个相邻小区。 用户设备切换失败之前的服务 小区的配置信息中可以包括邻区列表, 其中包括切换失败之前的服务小区的 相邻小区的标识信息, 以及相邻小区的频率 (即频点)和 4尤码信息。
用户设备在切换失败之前, 可以在进行呼叫行为的过程中向切换失败之 前的服务小区上报测量报告, 该测量报告中可以携带其他小区, 通常是该服 务小区的相邻小区的频点和扰码信息。 切换失败之前的服务小区可以根据用 户设备上报的测量报告来为用户设备选择切换目标小区。 但由于切换失败之 前的服务小区的邻区可能与切换目标小区存在扰码冲突。 具体是指: 切换失 败之前的服务小区的某一相邻小区与切换目标小区为频率相同且扰码相同的 小区。 而扰码冲突可能导致用户设备切换到切换目标小区时发生切换失败, 并发生掉话现象或小区更新。
本发明实施例中涉及的用户设备的当前服务小区, 可以是用户设备在切 换失败之后重新接入的服务小区。 具体的, 用户设备切换失败之后, 可能发 生掉话, 用户设备可以通过发起 RRC接入请求接入当前服务小区, 或者, 用 户设备切换失败之后, 也可以进行小区更新, 更新到当前服务小区。
在用户设备切换到目标小区时发生切换失败并出现掉话现象的实施场景 下,可以读取用户设备的电路交换无线接入承载( Circuit Switch radio access bearer, CS RAB )译放块信息或分组交换无线接入承载( Packet Switch radio access bearer, PS RAB )译放块信息中包括的用户设备发生掉话前的主服 务小区标识信息。 可以从用户设备掉话后重新发起无线资源控制 (Radio Resource Control, RRC )接入请求中获取携带的当前服务小区标识信息,
当前服务小区即为用户切换失败后重新接入的小区。
在用户设备切换到目标小区时发生切换失败并出现小区更新现象的实施 场景下, 可以从用户设备发送的小区更新消息中获取其中携带的切换失败之 前的服务小区标识信息。 如果用户设备小区更新成功, 则还可以根据该用户 设备的小区更新完成后新接入的当前月良务小区的标识信息。
进一步的, 可以比较当前服务小区和用户设备切换失败之前的服务小区 的的频率和扰码, 根据比较结果确定当前服务小区与切换失败之前的服务小 区的邻区存在扰码冲突。
可以根据用户设备的国际移动用户标识 ( International Mobile Subscriber Identity, IMSI )来确定用户设备发生切换失败之前的服务小区以 及切换失败之后接入的当前服务小区。 可以根据切换失败之前的服务小区的 配置信息确定切换失败之前的服务小区的邻区的频点和扰码。 通过全球小区 标识( Global Cell Identity, GCI )来确定邻区与当前服务区小区是否为相同 的小区。
如果用户设备的当前服务小区与切换失败之前的服务小区的相邻小区中 某一相邻小区为频率相同、 4尤码相同的不同小区, 则可以确定用户设备的当 前服务小区与切换失败之前的服务小区的该邻区存在扰码冲突。
需要说明的是, 在当前服务小区与切换失败之前的服务小区的邻区存在 扰码冲突的场景下, 与当前服务小区存在扰码冲突的切换失败之前的服务小 区的邻区即为切换失败中的切换目标小区。 因此, 也可以通过判断切换失败 的切换目标小区和当前服务小区是否为同频同扰的不同小区而确定是否存在 扰码冲突。
以下以一个具体例子进行说明: 设用户设备切换到切换目标小区发生 切换失败之前的服务小区为小区 CellA, 即,用户设备发生掉话或小区更新前 的服务小区。 CellB与 CellA已经配置邻区关系, CellA与 CellC无邻区关系。 其中, CellB和 CellC具有相同的频点 f1和相同的 4尤码 PSC 1。
用户设备掉话或小区更新前在 CellA中进行呼叫行为, 即, CellA为用户 设备切换失败之前的服务小区。 用户设备收到来自 CellC的测量报告后上报 给 RNC,测量报告中包括 CellC的频点 Π 和扰码 PSC1。 由于 CellA的邻区 中包括 CellB, CellB的频点 f1 , 扰码为 PSC1。 因此, RNC可以判定用户设
备向 CellB进行切换, 即, 切换目标小区为 CellB。 可以看出, 由于 CellB和 CellC为同频同 4尤码的不同小区, 因此, RNC无法区分测量 4艮告实际来源的 小区, 由此会出现 RNC切换目标小区的误判决。 进而可能导致 RNC指示用 户设备向 CellB进行切换而造成用户设备的链路失败, 导致用户设备发生掉 话或者小区更新。
RNC可以记录该用户设备发生掉话或小区更新前的 IMSI信息、 用户设 备掉话或小区更新之前的服务小区 (即 CellA )、 切换目标小区 (即 CellB )。 如果用户设备在一定时间内如果成功发起了小区更新或者 RRC接入请求,则 RNC可以记录该用户设备的 IMSI信息(以确定掉话或小区更新前与 RRC接 入或小区更新后对应同一用户设备), RRC接入后或者小区更新后的当前服 务小区 (即 CellC )。
如果该用户设备 RRC接入或小区更新后的当前服务小区( CellC )与 RNC 所确定的切换目标小区 (CellB )为频率相同、 扰码相同的不同小区 (可以通 过 GCI确定), 则可以确定 CellC与 CellB存在扰码冲突。
可选的, 还可以进一步确定用户设备接入当前服务小区与切换失败(即 发生掉话或小区更新) 的时间间隔是否在设定范围内, 其中, 发生掉话或小 区更新的时间可以从例如: 用户设备的 CS RAB译放块信息或 PS RAB译放 块信息中获取。 用户设备接入当前服务小区的时间可以根据用户设备的 IMSI 查询。 如果用户设备接入当前服务小区与发生掉话或小区更新的时间间隔在 设定范围内, 则可以确定当前服务小区与切换失败之前服务小区的邻区存在 扰码冲突。
针对主服务小区存在扰码冲突小区的实施场景, 可以通过修改当前服务 小区或者与当前服务小区存在扰码冲突的切换失败之前的服务小区的邻区, 来降低用户设备切换失败的几率, 进而降低用户设备的掉话几率或小区更新 的几率, 保证用户设备业务正常进行。
进一步的, 还可以根据比较结果确定当前服务小区为切换失败之前的服 务小区的漏配邻区。 具体的, 如果当前服务小区与切换失败之前的服务小区 的所有邻区均为频率不同的不同小区, 则可以确定当前服务小区为切换失败 之前的服务小区的漏配邻区。
可选的, 在确定了当前服务小区为切换失败之前的服务小区的漏配邻区
之后, 针对主服务小区存在漏配邻区的实施场景, 可以通过为主服务小区添 加该漏配邻区的方式来降低用户设备切换失败的几率, 进而降低用户设备的 掉话几率或小区更新的几率, 即将漏配的当前服务小区添加为切换失败之前 的服务小区的邻区, 从而保证用户设备业务正常进行。
需要说明的是, 本发明实施例可以用于 WCDMA系统的扰码冲突以及邻 区漏配检测, 可以理解的是, 本发明实施例还适用于其他各种存在扰码冲突 或邻区漏配场景的通信系统, 例如: 可以用于检测 LTE的同频物理小区标识 ( physical cell identifier, PCI ) 冲突检测, 或者 GSM 的同广播控制信道 ( physical cell identifier, BCCH ) 同基站识另1 J码 ( base transceiver station identity code, BSIC ) 冲突检测, 在此不——赘述。
本实施例提供的确定扰码冲突的方法, 分别确定用户设备切换失败之前 的服务小区和切换失败后接入的当前服务小区, 通过比较当前服务小区和切 换失败之前的服务小区的邻区的频率和扰码, 来确定当前服务小区与切换失 败之前的服务小区的邻区存在扰码冲突。 从而降低用户设备的切换失败的几 率, 进而降低掉话几率或小区更新的几率, 保证用户设备业务正常进行。 图 2为本发明提供的确定扰码冲突的方法又一个实施例的流程图, 如图 2, 本实施例以由于扰码冲突引起用户设备的切换失败, 进而引起用户设备的 掉话, 用户设备重新发起呼叫接入当前服务小区的场景为例进行说明, 该方 法包括:
S201、 读取用户设备的 CS RAB译放块信息或 PS RAB译放块信息, CS RAB译放块信息或 PS RAB译放块信息包括用户设备发生掉话前的服务 'J、区标识信息, 用户设备发生掉话的时间信息。
用户设备发生掉话前的服务小区即为本发明实施例涉及的用户设备切换 失败之前的服务小区。
其中, CS RAB译放块或者 PS RAB译放块中记录有本次通话的译放信 息, 如果译放显示为异常译放(本发明实施例中涉及的用户设备掉话), 则可 以在该 CS RAB译放块或者 PS RAB释放块获取此次用户设备异常译放之前 的服务小区标识信息, 还可以获取异常译放的时间, 例如: 可以以 RAB release time=T1来标识, 还可以获取该用户设备的 IMSI信息。
5202、 确定用户设备接入当前服务小区的时间。
具体的,可以通过用户设备的 IMSI查询该用户设备在 Thd_n时间内(该 Thd_n 可以设置默认值, 例如: 30s )是否发起 RRC 呼叫请求连接, 如果 Thd_n超过 30S, 则可以丟弃该条呼叫记录, 即, 不进行 S202之后的操作。 也就是说, 可以在用户设备接入当前服务小区与发生掉话的时间间隔在设定 范围内时,确定当前服务小区与发生掉话前的服务小区的邻区存在扰码冲突。
5203、接收用户设备发送的无线资源控制 RRC接入请求,该 RRC接入 请求中携带当前服务小区标识信息,以及该当前小区的频点信息和扰码信息。
5204、 在发生掉话前的服务小区的配置信息中读取出邻区列表信息, 若 当前服务小区与任一上述邻区为频率相同、 扰码相同的不同小区, 则确定当 前服务小区与发生掉话前的服务小区的该邻居存在扰码冲突。
具体的, 发生掉话前的服务小区的配置信息中邻区列表信息包括: 与主 服务小区同系统的同频和异频的邻区列表组成的集合 L={Celli , Celln}, 以及集合 L中包含的每个邻区的频点和扰码信息, X={ (fi, PSCi), ( fn, PSCn ) }, 若当前服务小区的频点和扰码为 (f2,PSC2 ), 如果在集合 X中存 在 (fi, PSCi)= ( f2,PSC2 ), 那么当前服务小区与发生掉话前的服务小区的频 点和扰码为 (fi, PSCi)的邻区存在扰码冲突。
5205、 若前服务小区与发生掉话之前的服务小区的所有邻区均为频率不 同的不同小区, 则确定当前服务小区为发生掉话前的服务小区的漏配邻区。
需要说明的是, 如果邻区列表中包括一阶邻区列表, 即包括与发生掉话 之前的服务小区的同系统的同频和异频邻区列表 {Celli , Celln}, 不包括 异系统邻区列表, 一阶邻区的频点和扰码 X={ ( fi, PSCi ) ,...,(fn, PSCn)}, 如果当前服务小区的频点和扰码(f1 , PSC1 ), 如果(f1 , PSC1 )与集合 X 的任一 (fi, PSCi)均不相等,并且当前服务小区的 ID不存在于 {Celli, Celln} 中, 那么当前服务小区即为发生掉话前的服务小区的漏配邻区。
本实施例提供的确定扰码冲突的方法, 由于扰码冲突引起用户设备切换 失败并导致用户设备掉话, 分别确定用户设备切换失败前的服务小区和切换 失败后接入的当前服务小区, 比较当前服务小区与切换失败前的服务小区的 邻区的频率和扰码, 根据比较结果确定当前服务小区与切换失败前的服务小 区的邻区存在扰码冲突, 进而可以进行修改当前服务小区或存在扰码冲突的
邻区的扰码的操作; 或者, 为切换失败前的服务小区添加漏配邻区。 从而降 低用户设备切换失败的几率, 进而降低用户设备的掉话几率, 保证用户设备 业务正常进行。 图 3为本发明提供的确定扰码冲突的方法另一个实施例的流程图, 如图
3, 本实施例以由于扰码冲突引起用户设备切换失败, 并导致用户设备小区更 新的场景为例进行说明, 该方法包括:
5301、 读取用户设备是否有小区更新消息, 小区更新消息中携带所述用 户小区更新前的服务小区标识信息。
用户设备发生小区更新前的服务小区即为本发明实施例涉及的用户设备 切换失败之前的服务小区。
小区更新消息中还可以包括: 原因信息。
可选的, 如果原因信息不是无线链路(Radio Link, RL ) 失败, 业务无 线承载复位 ( Traffic Radio Bear Reset, TRB RST )和信令无线承载复位 ( Signalling Radio Bearer Reset, SRB RST ) 中的任一种, 则可以丟弃该 小区更新消息, 不再执行 S301之后的步骤。
如果原因信息是 RL, TRB RST或 SRB RST中的任一种, 则可以比较 当前服务小区和切换的目标小区的频率和扰码,,若比较结果为当前服务小区 和切换的目标小区的频率和扰码相同, 则确定当前服务小区和切换的目标小 区存在扰码冲突。
根据用户设备发送的小区更新消息确定用户设备发生小区更新前的服务 小区, 小区更新消息中携带用户设备小区更新前的服务小区标识信息。
5302、 如果小区更新成功的话, 则记录同一个 UE (即相同 IMSI )在更 新完成后接入的当前服务小区的标识信息。
S303、 在小区更新前的服务小区的配置信息中读取出邻区列表信息, 若 当前服务小区与小区更新之前的服务小区的任一邻区为频率相同、 扰码相同 的不同小区, 则确定当前服务小区与小区更新之前的服务小区的该邻区存在 扰码冲突。
S303的具体过程可参见 S204中的相关描述, 在此不再赘述。
S304、 若前服务小区与小区更新之前的服务小区的所有邻区均为频率不
同的不同小区, 则确定当前服务小区为小区更新前的服务小区的漏配邻区。
S304的具体过程可参见 S205中的相关描述, 在此不再赘述。
本实施例提供的确定扰码冲突的方法, 由于扰码冲突引起用户设备切换 失败并进行小区更新, 分别确定用户设备切换失败前的服务小区和切换失败 后接入的当前服务小区, 比较当前服务小区与切换失败前的服务小区的邻区 的频率和扰码, 根据比较结果确定当前服务小区与切换失败前的服务小区的 邻区存在扰码冲突, 进而可以进行修改当前服务 、区或存在扰码冲突的邻区 的扰码的操作; 或者, 为切换失败前的服务小区添加漏配邻区。 从而降低用 户设备切换失败的几率, 进而降低用户设备小区更新的几率, 保证用户设备 业务正常进行。 图 4为本发明提供的确定扰码冲突的装置一个实施例的结构示意图, 如 图 4所示, 该确定扰码冲突的装置包括: 处理器 41 ;
处理器 41 , 用于确定用户设备切换失败之前的服务小区, 并确定用户设 备的当前服务小区;
处理器 41 , 还用于比较当前服务小区和切换失败之前的服务小区的邻区 的频率和扰码, 根据比较结果确定当前服务小区与切换失败之前的服务小区 的邻区存在扰码冲突。
可选的, 处理器 41可以具体用于: 若比较结果为当前服务小区与切换失 败之前的服务小区的任一邻区为频率相同、 扰码相同的不同小区, 则确定当 前服务小区与切换失败之前的服务小区的该邻区存在扰码冲突。
可选的,处理器 41还可以用于:确定用户设备接入当前服务小区的时间, 并确定用户设备发生切换失败的时间; 若用户设备接入当前服务小区与发生 切换失败的时间间隔在设定范围内, 则执行比较步骤。
可选的, 处理器 41还可以用于: 修改当前服务小区的扰码, 或者, 修改 与当前服务小区存在扰码冲突的切换失败之前的服务小区的邻区的扰码。
可选的,处理器 41还可以用于: 根据比较结果确定当前服务小区为切换 失败之前的服务小区的漏配邻区。
可选的,处理器 41还可以用于: 若比较结果为当前服务小区与切换失败 之前的服务小区的所有邻区均为频率不同的不同小区, 则确定当前服务小区
为切换失败之前的服务小区的漏配邻区。
可选的, 处理器 41还可以用于: 将漏配的当前服务小区添加为切换失败 之前的服务小区的邻区。
可选的, 若用户设备发生切换失败并以接入方式接入到当前服务小区, 则处理器 41可以具体用于:读取用户设备的电路交换无线接入承载 CS RAB 译放块信息或分组交换无线接入承载 PS RAB译放块信息, CS RAB译放块 信息或 PS RAB译放块信息包括用户设备发生掉话前的服务小区标识信息。
可选的,处理器 41还可以具体用于: 根据用户设备发送的无线资源控制 RRC接入请求确定用户设备发生掉话后接入的当前服务小区, RRC接入请 求中携带当前服务小区标识信息。
可选的, 若用户设备发生切换失败并以小区更新方式更新至当前服务小 区, 处理器 41还可以具体用于: 根据用户设备发送的小区更新消息确定用户 设备发生小区更新前的服务小区, 小区更新消息中携带切换失败之前的服务 小区标识信息根据用户设备发送的小区更新消息确定用户设备发生小区更新 前的服务小区, 小区更新消息中携带切换失败之前的服务小区标识信息。
可选的, 小区更新消息中还包括用户设备发生小区更新的原因信息, 若 原因信息为 RL 失败, TRB RST和 SRB RST中的任一种, 则处理器 41执 行的比较步骤可以具体为: 比较当前服务小区和切换的目标小区的频率和扰 码, 若比较结果为当前服务小区和切换的目标小区的频率和扰码相同, 则确 定当前服务小区和切换的目标小区存在扰码冲突。
图 5为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图, 如图 5所示, 在图 4所示实施例的基础上, 该确定扰码冲突的装置还可以包 括:
接收器 42, 用于接收用户设备上报的当前服务小区的测量报告, 测量报 告中携带当前服务小区的频率信息和扰码信息;
可选的, 处理器 41 , 还可以用于在切换失败之前的服务小区的邻区中为 用户设备确定切换目标小区。
本实施例提供的确定扰码冲突的装置, 可以是基站控制器, 例如: 可以 是 GSM或 CDMA中的 BSC, 也可以是 WCDMA中的 RNC, 还可以是各种 通信系统中的基站, 例如: LTE 系统中的 eNodeB, 还可以为各种通信系统
中的集中式服务器等装置。
方法实施例中的相关描述, 在此不再赘述。 图 6为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图, 如图 6所述, 该确定扰码冲突的装置包括: 确定单元 61和比较单元 62; 确定单元 61 , 用于确定用户设备切换失败之前的服务小区, 并确定用户 设备的当前服务小区;
比较单元 62, 还用于比较当前服务小区和切换失败之前的服务小区的邻 区的频率和 ·ί尤码;
确定单元 61还用于, 根据比较单元 62的比较结果确定当前服务小区与 切换失败之前的服务小区的邻区存在扰码冲突。
可选的, 确定单元 61可以具体用于: 若比较单元 62的比较结果为当前 服务小区与切换失败之前的服务小区的任一邻区为频率相同、 扰码相同的不 同小区, 则确定当前服务小区与切换失败之前的服务小区的该邻区存在扰码 冲突。
可选的,确定单元 61还可以用于: 确定用户设备接入当前服务小区的时 间, 并确定用户设备发生切换失败的时间; 若用户设备接入当前服务小区与 发生切换失败的时间间隔在设定范围内, 则比较单元 62执行比较步骤。
图 7为本发明提供的确定扰码冲突的装置又一个实施例的结构示意图, 如图 7所示, 在图 6所示实施例的基础上, 该确定扰码冲突的装置还可以包 括:
第一修改单元 63, 用于修改当前服务小区的扰码, 或者, 修改与当前服 务小区存在扰码冲突的切换失败之前的服务小区的邻区的扰码。
可选的, 确定单元 61还可以用于: 根据比较单元 62的比较结果确定当 前服务小区为切换失败之前的服务小区的漏配邻区。
可选的, 确定单元 61可以具体用于: 若比较单元 62的比较结果为当前 服务小区与切换失败之前的服务小区的所有邻区均为频率不同的不同小区, 则确定当前服务小区为切换失败之前的服务小区的漏配邻区。
可选的, 装置还可以包括: 第二修改单元 64, 用于将漏配的当前服务小 区添加为切换失败之前的服务小区的邻区。
可选的, 若用户设备发生切换失败并以接入方式接入到当前服务小区, 则确定单元 61 可以具体用于: 读取用户设备的电路交换无线接入承载 CS RAB译放块信息或分组交换无线接入承载 PS RAB译放块信息, CS RAB释 放块信息或 PS RAB译放块信息包括用户设备发生掉话前的服务小区标识信 息。
可选的,确定单元 61可以具体用于: 根据用户设备发送的无线资源控制 RRC接入请求确定用户设备发生掉话后接入的当前服务小区, RRC接入请 求中携带当前服务小区标识信息。
可选的, 若用户设备发生切换失败并以小区更新方式更新至当前服务小 区,确定单元 61可以具体用于: 根据用户设备发送的小区更新消息确定用户 设备发生小区更新前的服务小区, 小区更新消息中携带切换失败之前的服务 小区标识信息根据用户设备发送的小区更新消息确定用户设备发生小区更新 前的服务小区, 小区更新消息中携带切换失败之前的服务小区标识信息。
可选的, 小区更新消息中还包括用户设备发生小区更新的原因信息, 若 原因信息为 RL 失败, TRB RST和 SRB RST中的任一种, 则比较单元 62 可以执行的比较步骤具体为: 比较当前服务小区和切换的目标小区的频率和 扰码, 若比较结果为当前服务小区和切换的目标小区的频率和扰码相同, 则 确定当前服务小区和切换的目标小区存在扰码冲突。
可选的, 该装置还可以包括:
接收单元 65, 用于接收用户设备上报的当前服务小区的测量报告, 测量 报告中携带当前服务小区的频率信息和扰码信息;
确定单元 61 , 还可以用于在切换失败之前的服务小区的邻区中为用户设 备确定切换目标小区。
本实施例提供的确定扰码冲突的装置, 可以是基站控制器, 例如: 可以 是 GSM或 CDMA中的 BSC, 也可以是 WCDMA中的 RNC, 还可以是各种 通信系统中的基站, 例如: LTE 系统中的 eNodeB, 还可以为各种通信系统 中的集中式服务器等装置。
方法实施例中的相关描述, 在此不再赘述。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以上 述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功 能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置和单元的具体 工作过程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到 另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相 互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间 接耦合或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用软件功能单 元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售 或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本 申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的 全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存储在一个 存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)或处理器(processor )执行本申请各个实施例所 述方法的全部或部分步骤。 而前述的存储介质包括: U 盘、 移动硬盘、 只读 存储器 (ROM , Read-Only Memory ), 随机存取存储器 (RAM , Random
Access Memory ), 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对其限制; 尽管参照前述实施例对本申请进行了详细的说明, 本领域的普通技术人员应 当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其 中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案 的本质脱离本申请各实施例技术方案的精神和范围。
Claims
1、 一种确定扰码冲突的方法, 其特征在于, 包括:
确定用户设备切换失败之前的服务小区, 并确定所述用户设备的当前服 务小区;
比较所述当前服务小区和所述切换失败之前的服务小区的邻区的频率和 扰码, 根据所述比较结果确定所述当前服务小区与所述切换失败之前的服务 小区的邻区存在扰码冲突。
2、 根据权利要求 1所述的方法, 其特征在于, 所述根据所述比较结果确 定所述当前服务小区与所述切换失败之前的服务小区的邻区存在扰码冲突, 包括:
若所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的 任一邻区为频率相同、 扰码相同的不同小区, 则确定所述当前服务小区与所 述切换失败之前的服务小区的该邻区存在扰码冲突。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述方法还包括: 确定所述用户设备接入所述当前服务小区的时间, 并确定所述用户设备 发生切换失败的时间;
若所述用户设备接入所述当前服务小区与发生切换失败的时间间隔在设 定范围内, 则执行所述比较步骤。
4、根据权利要求 1 -3任一项所述的方法,其特征在于,所述方法还包括: 修改所述当前服务小区的扰码, 或者, 修改与所述当前服务小区存在扰 码冲突的所述切换失败之前的服务小区的邻区的扰码。
5、根据权利要求 1 -4任一项所述的方法,其特征在于,所述方法还包括: 根据所述比较结果确定所述当前服务小区为所述切换失败之前的服务小 区的漏配邻区。
6、 根据权利要求 5所述的方法, 其特征在于, 所述根据所述比较结果确 定所述当前服务小区为所述切换失败之前的服务小区的漏配邻区, 包括: 若所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的 所有邻区均为频率不同的不同小区, 则确定所述当前服务小区为所述切换失 败之前的服务小区的漏配邻区。
7、 根据权利要求 5或 6所述的方法, 其特征在于, 所述方法还包括:
将漏配的所述当前服务小区添加为所述切换失败之前的服务小区的邻 区。
8、 根据权利要求 1-7任一项所述的方法, 其特征在于, 若所述用户设备 发生切换失败并以接入方式接入到所述当前服务小区, 则所述确定用户设备 发生切换失败之前的服务小区, 包括:
读取所述用户设备的电路交换无线接入承载 CS RAB译放块信息或分组 交换无线接入承载 PS RAB译放块信息, 所述 CS RAB译放块信息或所述 PS RAB译放块信息包括所述用户设备发生掉话前的服务小区标识信息。
9、 根据权利要求 8所述的方法, 其特征在于, 所述确定所述用户设备的 当前服务小区, 包括:
根据所述用户设备发送的无线资源控制 RRC接入请求确定所述用户设 备发生掉话后接入的所述当前服务小区,所述 RRC接入请求中携带所述当前 服务小区标识信息。
10、 根据权利要求 1 -7任一项所述的方法, 其特征在于, 若所述用户设 备发生切换失败并以小区更新方式更新至所述当前服务小区, 则所述确定用 户设备切换失败之前的服务小区, 包括:
根据所述用户设备发送的小区更新消息确定所述用户设备发生小区更新 前的服务小区, 所述小区更新消息中携带所述切换失败之前的服务小区标识 信息。
11、根据权利要求 10所述的方法, 其特征在于, 所述小区更新消息中还 包括所述用户设备发生小区更新的原因信息,若所述原因信息为无线链路 RL 失败,业务无线承载复位 TRB RST和信令无线承载复位 SRB RST中的任一 种, 所述比较步骤具体为: 比较所述当前服务小区和所述切换的目标小区的 频率和扰码, 若所述比较结果为所述当前服务小区和所述切换的目标小区的 频率和扰码相同,则确定当前服务小区和所述切换的目标小区存在扰码冲突。
12、 根据权利要求 1-11任一项所述的方法, 其特征在于, 所述方法还包 括:
接收所述用户设备上报的所述当前服务小区的测量报告, 所述测量报告 中携带所述当前服务小区的频率信息和扰码信息;
在所述切换失败之前的服务小区的邻区中为所述用户设备确定切换目标
小区。
13、 一种确定扰码冲突的装置, 其特征在于, 包括:
处理器, 用于确定用户设备切换失败之前的服务小区, 并确定所述用户 设备的当前服务小区;
所述处理器, 还用于比较所述当前服务小区和所述切换失败之前的服务 小区的邻区的频率和扰码, 根据所述比较结果确定所述当前服务小区与所述 切换失败之前的服务小区的邻区存在扰码冲突。
14、 根据权利要求 13所述的装置, 其特征在于, 所述处理器具体用于: 若所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的任一 邻区为频率相同、 扰码相同的不同小区, 则确定所述当前服务小区与所述切 换失败之前的服务小区的该邻区存在扰码冲突。
15、 根据权利要求 13或 14所述的装置, 其特征在于, 所述处理器还用 于: 确定所述用户设备接入所述当前服务小区的时间, 并确定所述用户设备 发生切换失败的时间; 若所述用户设备接入所述当前服务小区与发生切换失 败的时间间隔在设定范围内, 则执行所述比较步骤。
16、 根据权利要求 13-15任一项所述的装置, 其特征在于, 所述处理器 还用于: 修改所述当前服务小区的扰码, 或者, 修改与所述当前服务小区存 在扰码冲突的所述切换失败之前的服务小区的邻区的扰码。
17、 根据权利要求 13-16任一项所述的装置, 其特征在于, 所述处理器 还用于: 根据所述比较结果确定所述当前服务小区为所述切换失败之前的服 务小区的漏配邻区。
18、 根据权利要求 17 所述的装置, 其特征在于, 所述处理器还用于: 若所述比较结果为所述当前服务小区与所述切换失败之前的服务小区的所有 邻区均为频率不同的不同小区, 则确定所述当前服务小区为所述切换失败之 前的月良务小区的漏配邻区。
19、 根据权利要求 17或 18所述的装置, 其特征在于, 所述处理器还用 于:将漏配的所述当前服务小区添加为所述切换失败之前的服务小区的邻区。
20、 根据权利要求 13-19任一项所述的装置, 其特征在于, 若所述用户 设备发生切换失败并以接入方式接入到所述当前服务小区, 则所述处理器具 体用于: 读取所述用户设备的电路交换无线接入承载 CS RAB译放块信息或
分组交换无线接入承载 PS RAB译放块信息, 所述 CS RAB译放块信息或所 述 PS RAB译放块信息包括所述用户设备发生掉话前的服务小区标识信息。
21、 根据权利要求 20所述的装置, 其特征在于, 所述处理器具体用于: 根据所述用户设备发送的无线资源控制 RRC接入请求确定所述用户设备发 生掉话后接入的所述当前服务小区,所述 RRC接入请求中携带所述当前服务 小区标识信息。
22、 根据权利要求 13-21任一项所述的装置, 其特征在于, 若所述用户 设备发生切换失败并以小区更新方式更新至所述当前服务小区, 所述处理器 具体用于: 根据所述用户设备发送的小区更新消息确定所述用户设备发生小 区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前的服务小 区标识信息根据所述用户设备发送的小区更新消息确定所述用户设备发生小 区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前的服务小 区标识信息。
23、 根据权利要求 22 所述的装置, 其特征在于, 所述小区更新消息中 还包括所述用户设备发生小区更新的原因信息,若所述原因信息为 RL 失败,
TRB RST和 SRB RST中的任一种, 则所述处理器执行的所述比较步骤具体 为: 比较所述当前服务小区和所述切换的目标小区的频率和扰码, 若所述比 较结果为所述当前服务小区和所述切换的目标小区的频率和扰码相同, 则确 定当前服务小区和所述切换的目标小区存在扰码冲突。
24、 根据权利要求 13-23任一项所述的装置, 其特征在于, 还包括: 接收器, 用于接收所述用户设备上报的所述当前服务小区的测量报告, 所述测量报告中携带所述当前服务小区的频率信息和扰码信息;
所述处理器, 还用于在所述切换失败之前的服务小区的邻区中为所述用 户设备确定切换目标小区。
25、 一种确定扰码冲突的装置, 其特征在于, 包括:
确定单元, 用于确定用户设备切换失败之前的服务小区, 并确定所述用 户设备的当前服务小区;
比较单元, 还用于比较所述当前服务小区和所述切换失败之前的服务小 区的邻区的频率和扰码;
所述确定单元还用于, 根据所述比较单元的所述比较结果确定所述当前
服务小区与所述切换失败之前的服务小区的邻区存在扰码冲突。
26、 根据权利要求 25 所述的装置, 其特征在于, 所述确定单元具体用 于: 若所述比较单元的比较结果为所述当前服务小区与所述切换失败之前的 服务小区的任一邻区为频率相同、 扰码相同的不同小区, 则确定所述当前服 务小区与所述切换失败之前的服务小区的该邻区存在扰码冲突。
27、 根据权利要求 25或 26所述的装置, 其特征在于, 所述确定单元还 用于: 确定所述用户设备接入所述当前服务小区的时间, 并确定所述用户设 备发生切换失败的时间; 若所述用户设备接入所述当前服务小区与发生切换 失败的时间间隔在设定范围内, 则所述比较单元执行所述比较步骤。
28、 根据权利要求 25-27任一项所述的装置, 其特征在于, 所述装置还 包括:
第一修改单元, 用于修改所述当前服务小区的扰码, 或者, 修改与所述 当前服务小区存在扰码冲突的所述切换失败之前的服务小区的邻区的扰码。
29、 根据权利要求 25-28任一项所述的装置, 其特征在于, 所述确定单 元还用于: 根据所述比较单元的所述比较结果确定所述当前服务小区为所述 切换失败之前的服务小区的漏配邻区。
30、 根据权利要求 29 所述的装置, 其特征在于, 所述确定单元具体用 于: 若所述比较单元的所述比较结果为所述当前服务小区与所述切换失败之 前的服务小区的所有邻区均为频率不同的不同小区, 则确定所述当前服务小 区为所述切换失败之前的服务小区的漏配邻区。
31、根据权利要求 29或 30所述的装置,其特征在于, 所述装置还包括: 第二修改单元, 用于将漏配的所述当前服务小区添加为所述切换失败之前的 服务小区的邻区。
32、 根据权利要求 25-31任一项所述的装置, 其特征在于, 若所述用户 设备发生切换失败并以接入方式接入到所述当前服务小区, 则所述确定单元 具体用于: 读取所述用户设备的电路交换无线接入承载 CS RAB译放块信息 或分组交换无线接入承载 PS RAB译放块信息, 所述 CS RAB译放块信息或 所述 PS RAB 译放块信息包括所述用户设备发生掉话前的服务小区标识信 息。
33、 根据权利要求 32 所述的装置, 其特征在于, 所述确定单元具体用
于:根据所述用户设备发送的无线资源控制 RRC接入请求确定所述用户设备 发生掉话后接入的所述当前服务小区,所述 RRC接入请求中携带所述当前服 务小区标识信息。
34、 根据权利要求 25-33任一项所述的装置, 其特征在于, 若所述用户 设备发生切换失败并以小区更新方式更新至所述当前服务小区, 所述确定单 元具体用于: 根据所述用户设备发送的小区更新消息确定所述用户设备发生 小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前的服务 小区标识信息根据所述用户设备发送的小区更新消息确定所述用户设备发生 小区更新前的服务小区, 所述小区更新消息中携带所述切换失败之前的服务 小区标识信息。
35、 根据权利要求 34 所述的装置, 其特征在于, 所述小区更新消息中 还包括所述用户设备发生小区更新的原因信息,若所述原因信息为 RL 失败, TRB RST和 SRB RST中的任一种, 则所述比较单元执行的所述比较步骤具 体为: 比较所述当前服务小区和所述切换的目标小区的频率和扰码, 若所述 比较结果为所述当前服务小区和所述切换的目标小区的频率和扰码相同, 则 确定当前服务小区和所述切换的目标小区存在扰码冲突。
36、 根据权利要求 25-35任一项所述的装置, 其特征在于, 还包括: 接收单元,用于接收所述用户设备上报的所述当前服务小区的测量报告, 所述测量报告中携带所述当前服务小区的频率信息和扰码信息;
所述确定单元, 还用于在所述切换失败之前的服务小区的邻区中为所述 用户设备确定切换目标小区。
Priority Applications (5)
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SG11201504948YA SG11201504948YA (en) | 2012-12-27 | 2012-12-27 | Method for determining scrambling code conflict and apparatus for determining scrambling code conflict |
PCT/CN2012/087693 WO2014101054A1 (zh) | 2012-12-27 | 2012-12-27 | 确定扰码冲突的方法和确定扰码冲突的装置 |
CN2012800025775A CN103392355A (zh) | 2012-12-27 | 2012-12-27 | 确定扰码冲突的方法和确定扰码冲突的装置 |
EP12891069.2A EP2922332A4 (en) | 2012-12-27 | 2012-12-27 | METHOD AND DEVICE FOR DETERMINING AN ENCRYPTION CODE CONFLICT |
US14/743,397 US9503921B2 (en) | 2012-12-27 | 2015-06-18 | Method for determining scrambling code conflict and apparatus for determining scrambling code conflict |
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PCT/CN2012/087693 WO2014101054A1 (zh) | 2012-12-27 | 2012-12-27 | 确定扰码冲突的方法和确定扰码冲突的装置 |
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US14/743,397 Continuation US9503921B2 (en) | 2012-12-27 | 2015-06-18 | Method for determining scrambling code conflict and apparatus for determining scrambling code conflict |
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EP (1) | EP2922332A4 (zh) |
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US12052626B2 (en) | 2021-12-23 | 2024-07-30 | T-Mobile Usa, Inc. | Steering non-mobile connected-mode user equipment to higher capacity radio cells |
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CN107295584A (zh) * | 2016-04-11 | 2017-10-24 | 中兴通讯股份有限公司 | 小区切换的方法与装置、小区配置信息更新的方法与装置 |
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SG11201504948YA (en) | 2015-07-30 |
EP2922332A1 (en) | 2015-09-23 |
US9503921B2 (en) | 2016-11-22 |
US20150289151A1 (en) | 2015-10-08 |
CN103392355A (zh) | 2013-11-13 |
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