WO2009114988A1 - Method, device and system for notifying heterogeneous system neighbor cell information to user terminal - Google Patents

Abstract

The field of mobile communication technologies is involved. Especially a technology for notifying heterogeneous system neighbor cell information to user terminal is involved. A method for notifying heterogeneous system neighbor cell information to user terminal is provided, which solves the problem that abnormal phenomena such as system halted and reboot occur in some user terminals when network side broadcasts heterogeneous system neighbor cell information and improves the user's experience. The method comprises sending heterogeneous system neighbor cell information to the user terminal UE when the UE has heterogeneous system access capability. A network device and a communication system for notifying heterogeneous system neighbor cell information to user terminal are also provided.

Description

 Method, device and system for notifying user terminal different system neighbor cell information

 The present invention relates to the field of mobile communication technologies, and in particular, to a method, a network device, and a system for notifying a user terminal of different system neighbor cell information. Background technique

 At present, the largest commercial mobile communication system in the world with the widest coverage is

GSM (Global System for Mobile Communication, Global System for Mobile Communications). The GSM system is generally referred to as the 2G (2nd Generation Mobile Communication) system. With the development of technology, the 3G (The 3rd Generation Mobile Communication) system using CDMA (Code Division Multiple Access) technology has also entered or will enter the commercial stage. The 3G system is based on the WCDMA (Wideband CDMA) standard, the TD-SCDMA (Time Division-Synchronous CDMA) standard, and the CDMA2000 standard. Furthermore, 3GPP (3rd Generation Partnership Project) has initiated the standardization of LTE (Long Term Evolution) technology.

 For the newly constructed 3G network and its subsequent evolution network, due to its limited coverage in the initial stage of construction, it cannot provide continuous seamless coverage. It needs to be supplemented by GSM network in areas without coverage or poor coverage. Therefore, two networks have emerged. Interoperability issues between. The case of cell reselection and handover between two or more networks is called cell reselection and handover between different systems (Inter-RAT). The cell reselection and handover between different systems requires the network side to provide the parameter information required for inter-system cell reselection and handover to the UE (User Equipment), which is also called the heterogeneous system neighbor cell information, including the frequency point, Information such as codewords, synchronization timing, etc., so that the UE can understand the signal shield of the neighboring cell of the different system, and can reselect or switch to the neighboring cell of the different system when needed.

Taking the GSM system as an example, the TD-SCDMA system can be referred to as TD for short. In the prior art, the GSM system passes the system message SI2quater (System Information Type2 quater) broadcasts the eNB cell's different system neighbor cell information, that is, TD cell information, on the BCCH (Broadcasting Channel). The contents of the SI2quater message are shown in Table 1, including: L2 Pseudo Length, RR Management Protocol Discriminator, Skip Indicator, System Information Type 2quater Message Type Information type 2 quater message type), SI 2 quater Rest Octets, five entries, wherein the entry SI 2 quater Rest Octets indicates the different system neighbor cell information. All UEs in the GSM cell will receive the SI2quater message. The UEs in the GSM cell include GSM terminals (also referred to as 2G terminals), terminals supporting GSM-TD dual mode, terminals supporting GSM-WCDMA mode, and the like.

 Table 1

在目前进行的 TD-SCDMA规模试验网的测试中发现， 一旦 GSM小区配 置了 TD小区信息， 即通过在 GSM系统的 BCCH信道上发送 SI2quater消息 来携带 TD小区信息， 将会有部分 GSM终端出现死机、 重启等异常现象， 极 大地影响了该部分用户的使用。 发明内容

In the current test of the TD-SCDMA scale trial network, it is found that once the GSM cell is configured with TD cell information, that is, by transmitting the SI2quater message on the BCCH channel of the GSM system to carry the TD cell information, some GSM terminals will crash. Abnormal phenomena such as restarting have greatly affected the use of this part of users. Summary of the invention

The embodiment of the invention provides a method, a network device and a system for notifying a user terminal of different system neighboring cell information, and solves the problem that an abnormal phenomenon such as a crash or a restart occurs in some user terminals when the network side broadcasts the neighboring cell information of the different system. An embodiment of the present invention provides a method for notifying a user of a neighboring cell information of a different system, including: sending a different system neighbor cell message to the UE when the user terminal UE has the different system access capability, the embodiment of the present invention provides a Network equipment, including:

 The storage unit is configured to store information about the neighboring cell of the different system.

 The sending unit is configured to: when the user terminal UE has the different system access capability, send the stored different system neighbor cell information to the UE.

 The embodiment of the invention discloses a communication system for notifying a user terminal of different system neighbor cell information, comprising a first network device and a second network device, where:

 The first network device is configured to receive capability information reported by the user terminal UE, and transmit the capability information to the second network device;

 The second network device is configured to receive capability information of the UE, determine, according to the capability information, whether the UE has an inter-system access capability, and when the node is determined to be yes, send the stored heterogeneous system to the UE. Neighbor cell information.

 The embodiment of the present invention provides another communication system for notifying the neighboring cell information of the user terminal, including the first network device and the second network device, where:

 The first network device is configured to receive the capability information reported by the user terminal UE, determine, according to the capability information, whether the UE has the different system access capability, and report the determination result to the second network device;

 The second network device is configured to receive the determination result, and when the determination result is yes, send the stored different system neighbor cell information to the UE.

The method, the network device, and the communication system for notifying the neighboring cell information of the user terminal according to the embodiment of the present invention only transmit the information of the neighboring cell of the different system to the UE having the access capability of the different system, thereby avoiding the capability of not having the different system access. After receiving the information of the neighboring cell of the different system, the UE has an abnormal phenomenon such as a crash or a restart, which improves the user experience. DRAWINGS 1 is a flowchart of a method for notifying a neighboring cell information of a UE in an embodiment of the present invention; FIG. 2 is a structural block diagram of a network device for notifying a neighboring cell information of a UE in an embodiment according to an embodiment of the present invention; FIG. 3 is a BSC according to Embodiment 1 FIG. 4 is a flowchart of a method for notifying UEs of different system neighbor cell information; FIG. 4 is a correspondence table between each GSM cell and each TD neighbor cell in Embodiment 1;

 5 is a flow chart of a method for notifying neighboring cell information of a different system by using an MSC Server in Embodiment 2;

 FIG. 6 is a flowchart of another method for notifying neighboring cell neighbor information by using an MSC Server in Embodiment 3. detailed description

 Firstly, in the prior art, once the GSM cell is configured with TD cell information, some GSM terminals may be analyzed for the cause of an abnormal phenomenon such as a crash or a restart: Under normal circumstances, since the GSM terminal does not have a different system (for example, a 3G system) Incoming capability does not need to know the cell information of the different system. Therefore, the GSM terminal should directly discard the SI2quater message after receiving the SI2quater message. The GSM terminal that has the above problem tries to parse the message after receiving the SI2quater message, but cannot The TD cell information in the message is identified, causing the parsing failure to enter an infinite loop of the program, thereby causing an abnormal phenomenon such as a crash or a restart. It can be seen that the reason for this type of anomaly is that some GSM terminal chip manufacturers did not consider how to deal with the 3G system and its subsequent evolution system when developing the chip platform. In addition, the number of UEs (mainly GSM terminals) in the existing mobile communication system is huge, and it is difficult to modify, control, and manage the UE, so it is difficult to solve the problem from the terminal side.

 Based on this, an embodiment of the present invention provides a scheme for notifying a neighboring cell information of a heterogeneous system of a user terminal, which is used to solve the abnormal phenomenon that some GSM terminals are dead, restarted, etc. when the network side broadcasts the neighboring cell information of the different system under the existing mechanism. problem. The solution is as follows: Only the terminal with the access capability of the different system, for example, the user terminal supporting the dual mode of the GSM system and the 3G system, sends the information of the neighboring cell of the different system.

In the embodiment of the present invention, a different system of the GSM system is described by using a TD-SCDMA system or an E-UTRAN system as an example. Of course, the different system may also be a WCDMA system, a CDMA2000 system, or a WiMAX (Worldwide Interoperability Microwave Access). ) Systems, LTE systems, UWB (Ultra Wideband, Ultra Wide Band Wireless) systems, and more. In the GSM system, due to the limitation of the paging channel capacity, the paging message to the UE cannot be sent over the entire network, thereby introducing the concept of a location area, which includes several cells in one location area, and network paging to the UE. It is implemented by paging all cells in the location area where the UE is located. The location area is the smallest unit of the UE location update and network paging. The LAC (Location Area Code) is used to identify different location areas. The LAC is usually sent in the system message on the BCCH channel of each cell.

 When the UE is powered on and the SIM (Subscriber Identity Module) card is inserted, it will notify the network of its current location area through the IMSI (International Mobile Subscriber Identifier) attach procedure. As the UE moves, when it enters a new location area, it also initiates a location update, notifying the network of its new LAC. In addition, in order to maintain the close relationship between the UE and the network, and let the network know the location information of the UE in time, the UE may be required to initiate periodic location update to the network at intervals; the network stores the current user terminal at each location update. The LAC, as the location information for paging the UE. When a call is initiated to a UE in a location area, the MSC Server (Mobile Switching Center Server) sends a paging request to all cells in the corresponding location area through the BSC (Base Station Controller). That is, all UEs will be paged in the location area where the UE is located.

 The embodiment of the invention provides a method for notifying a user terminal of different system neighbor cell information, as shown in FIG. 1 , which includes the following steps:

 5101. Determine whether the UE has different system access capabilities.

 For example, according to the capability information of the UE, it is determined whether the UE has an inter-system access capability. By setting on the network side, the UE can actively report the capability information of the terminal to the BSC after the UE is powered on or updated in the GSM cell. The capability information specifically refers to whether it has different system access capabilities.

 5102. When the determination result is yes, send different system neighbor cell information to the UE.

The information about the neighboring cell of the different system includes the correspondence between each cell in the location area where the UE is located and the neighboring cell of the different system, and/or the configuration information of the neighboring cell of the different system; and, the information of the neighboring cell of the different system is usually not broadcast. A channel, such as a dedicated channel or a shared channel, is transmitted to the UE. At this point, the dual-mode terminal with different system access capability can normally perform cell reselection and handover between different systems according to the neighboring cell information of the different system, and does not have the GSM terminal with different system access capability, since no difference is received. The system neighbors the cell information, so there will be no abnormal phenomena such as crashes and restarts. This method effectively solves the problem that some user terminals have an abnormal phenomenon such as a crash or a restart when the network side broadcasts the neighboring cell information of the different system under the existing mechanism, thereby effectively improving the user experience.

 The method for notifying a user terminal of different system neighboring cell information provided by the embodiment of the present invention does not need to modify a large number of existing GSM terminals on the terminal side, and the modification of the dual mode terminal is mainly to enable the dual mode terminal to identify and store the dedicated channel. Or sharing the neighboring cell information of the different system received by the channel, and performing an interoperation process such as cell reselection and handover according to the information.

 The solution provided by the embodiment of the present invention is mainly implemented by the network side. A network device that implements the foregoing method on the network side, as shown in FIG. 2, includes:

 The storage unit 201 is configured to store the information of the neighboring cell of the different system.

 The sending unit 202 is configured to: when the user terminal UE has the different system access capability, send the stored different system neighbor cell information to the UE.

 The network device further includes: a receiving unit 203, configured to receive capability information of the user terminal UE, and a determining unit 204, configured to determine, according to capability information of the UE received by the receiving unit 203, whether the UE has different system access capability;

 When the determining unit 204 determines that the UE has the different system access capability, the sending unit 202 is notified to send the stored different system neighbor cell information to the UE.

 The network device may be a BSC or an MSC Server. The following describes the specific embodiments in detail.

 Embodiment 1

 In this embodiment, all GSM cells in the same location area are within the same BSC control range. In general, the coverage area of the GSM cell satisfies the condition. If the condition is not met, it can be adjusted by the conventional location area optimization method, so that the location area in the GSM system is equivalent to the BSC control range.

In this embodiment, the BSC pre-stores the correspondence between each GSM cell and each TD neighbor cell. And/or configuration information of each TD neighbor cell. As shown in FIG. 3, the method for notifying a user terminal of different system neighbor cell information by using a BSC includes the following steps:

 S301. The UE is powered on or updated in a GSM cell.

 5302. The UE actively sends the capability information of the terminal to the BSC.

 After the UE is powered on or updated in the GSM cell, the capability information is reported by initiating a Classmark change message. The capability information refers specifically to the content of the Classmark 3 option in the Classmark change message. The Classmark 3 is specifically: UMTS (Universal Mobile Telecommunications System) Communication System) 1.28 Mcps TDD Radio Access Technology Capability (Time Division Duplex Wireless Access Technology Capability). Classmark 3 is used to indicate whether the terminal supports UMTS 1.28 Mcps TDD, that is, whether it has different system access capabilities. When the parameter value of Classmark 3 is 1, it indicates that UMTS 1.28Mcps TDD is supported. When the parameter value is 0, it indicates that UMTS 1.28Mcps TDD is not supported. It can be seen that if the UE is a dual-mode terminal, the value of the Classmark 3 parameter in the reported Classmark change message is 1. If the UE is a GSM terminal, the value of the Classmark 3 parameter in the reported Classmark change message is 0.

 The UE always initiates the Classmark change message after the power-on or location update, and can be implemented by setting information on the network side. In the system message SI 3 Rest Octets sent by the GSM cell, the parameter of the Early Classmark Sending Control option is set to H, and the control can be controlled. The UE always sends a Classmark change message after power on or location update.

 5303, the BSC receives the capability information reported by the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the different system access capability, if not, executes S304, and if yes, executes S305;

 5304, BSC does not take any action, the process ends;

 5305. The BSC sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location where the UE is located, and/or the neighboring cell of the different system. Configuration information;

 5306. The UE stores the received neighboring cell information of the different system, and the process ends.

After the UE with the different system access capability obtains the information of the neighboring cell of the different system, it can be used in the idle state. PS (Packet Switch, packet switched domain) idle state, PS connection state reselection to TD-SCDMA system, and CS (Circuit Switch Domain) connection state to TD-SCDMA system handover.

 Selecting the location area as the unit of the transmitted neighboring cell information of the different system (that is, the transmitted hetero-system neighbor cell information includes the correspondence between each GSM cell and the neighboring cell of the different system in the location area where the UE is located, and/or the neighboring cell of the different system. The configuration information) is that when the UE is in the Idle state, the location update is performed only when the location area is changed, and the network is contacted, that is, the location information management of the UE in the Idle state of the UE can only be accurate to the location area. level. Therefore, the location area as the unit of the transmitted inter-system neighbor cell information can ensure that the UE has enough different system neighbor cell information to be used when moving in one location area.

 The correspondence between each cell in a location area and the adjacent cell of the different system can be given by means of a correspondence table. Taking a GSM cell in a location area as an example for description, the corresponding relationship between each GSM cell and each TD neighboring cell is as shown in FIG. 4, and each cell and different system neighboring cells shown in FIG. 4 can be transmitted through a dedicated channel. Correspondence table; Of course, in addition to the correspondence table shown in FIG. 4, configuration information of each TD cell appearing in the correspondence table may be simultaneously transmitted.

 In the first embodiment, on the network side, there is no need to make any changes to the MSC Server. The BSC needs to store the correspondence between each GSM cell and each TD neighboring cell in the BSC, and/or the configuration information of each TD neighboring cell. When the BSC receives the Classmark change message reported by the UE, it can determine whether the UE has a different system connection. Incoming capability, and only transmitting information of different system neighbor cells to UEs with different system access capabilities.

 Embodiment 2

In this embodiment, all GSM cells in the same location area are within two or more BSC services. In this case, the MSC Server needs to pre-store the correspondence between the internal GSM cells and the TD neighbor cells, and/or the configuration information of each TD neighbor cell, because the MSC Server manages at least one location area. This requires the BSC to report the neighboring cell information of each GSM cell to the MSC Server in advance, and then store it by the MSC Server. As shown in FIG. 5, a method for notifying a user terminal of different system neighbor cell information by using an MSC Server includes the following steps: 5501. The UE is powered on or updated in the GSM cell.

 5502. The UE actively reports the capability information of the terminal to the BSC.

 After the UE is powered on or the location is updated, the UE reports the capability information to the SC by initiating a Classmark change message.

 S503. The BSC passes the capability information reported by the UE to the MSC Server.

 5504, the MSC Server receives the capability information of the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the different system access capability, if not, executes S505, and if yes, executes S506;

 5505. The MSC Server does not take any action, and the process ends.

 5506. The MSC Server sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location where the UE is located, and/or the neighboring cell of the different system. Configuration information;

 5507. The UE stores the received neighboring cell information of the different system, and the process ends.

 In the second embodiment, the BSC needs to send the capability information reported by the UE to the MSC Server, and the MSC Server needs to store the correspondence between the GSM cells and the TD neighboring cells in the MSC Server, and/or the configuration information of each TD neighboring cell; When receiving the Classmark change message of the UE, the MSC Server can determine whether the UE has the different system access capability, and only sends the neighboring cell information of the different system to the UE with the different system access capability.

 Embodiment 3

 This embodiment provides another method for notifying the user terminal of the neighboring cell information of the system through the MSC Server. As shown in FIG. 6, the method includes the following steps:

 5601. The UE is powered on or updated in the GSM cell.

 5602. The UE actively reports the capability information of the terminal to the BSC.

 The UE reports the capability information to the BSC by initiating a Classmark change message after the GSM cell is powered on or updated.

S603, the BSC receives the capability information of the UE, determines whether the UE supports the UMTS 1.28 Mcps TDD, that is, whether the system has the access capability of the different system, and reports the judgment result to the MSC Server; 5604, the MSC Server receives the determination result, when the determination result is no, then S605 is performed, and when the determination result is YES, then S606 is performed;

 5605, the MSC Server does not take any action, and the process ends;

 S606, the MSC Server sends, by using a dedicated channel (for example, an SDCCH channel), the information of the neighboring cell to the UE, including the correspondence between each GSM cell and the neighboring cell of the different system in the location area where the UE is located, and/or the neighboring cell of the different system. Configuration information;

 5607. The UE stores the received neighboring cell information of the different system, and the process ends.

 In the third embodiment, the BSC needs to determine whether the UE has the different system access capability according to the capability information reported by the UE, and sends the judgment result to the MSC Server, where the MSC Server needs to store the correspondence between each GSM cell and each TD neighboring cell in the MSC Server. The relationship, and/or the configuration information of each TD neighboring cell, when the MSC Server receives the judgment result is yes, sends the different system neighbor cell information to the UE.

 The embodiment of the present invention provides a communication system for informing the user terminal of the neighboring cell information of the system, including the first network device and the second network device. The first network device may be a BSC, and the second network device may be an MSC Server, where:

 The first network device is configured to receive capability information reported by the UE, and transmit the capability information to the second network device.

 The UE can report its capability information according to the network setting information.

 The second network device is configured to receive the capability information of the UE, and determine, according to the capability information, whether the UE has the different system access capability, and when the determination result is yes, send the stored different system neighbor cell information to the UE. Or,

 The first network device is configured to receive the capability information reported by the UE, determine, according to the capability information, whether the UE has the different system access capability, and report the determination result to the second network device;

 The UE can report its capability information according to the network setting information.

 The second network device is configured to receive the judgment result, and when the judgment result is yes, send the stored different system neighbor cell information to the UE.

Of course, the TD-GSM dual-mode terminal in the embodiment of the present invention is not only capable of being based on the network side. The setting information, after the power-on or location update, always sends a Classmark change message carrying Classmark 3, indicating the capability information of the terminal, and also identifying and storing the different-system neighboring cell that the network side sends to the device through the non-broadcast channel. Information, and according to the neighboring cell information of different systems, perform inter-operational procedures such as cell reselection and handover between different systems.

 The method, the network device, and the communication system for notifying the neighboring cell information of the user terminal according to the embodiment of the present invention only transmit the information of the neighboring cell of the different system to the dual mode terminal, thereby effectively preventing the GSM terminal from receiving the information of the neighboring cell of the different system. Possible abnormalities such as crashes and restarts have improved user experience. The spirit and scope of the invention. For example, the UE may use other messages than the Classmark change message to send capability information. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request A method for notifying a user of a neighboring cell information of a different system, the method comprising: transmitting, when the user terminal UE has an inter-system access capability, sending a hetero-system neighbor cell message to the UE The method according to claim 1, wherein the information about the neighboring cell of the different system includes: a correspondence between each cell in the location area where the UE is located and a neighboring cell of a different system; and/or a different system Configuration information of the neighboring cell.  The method according to claim 1 or 2, wherein the different system neighbor cell information is sent to the UE through a dedicated channel or a shared channel.  The method according to claim 1 or 2, further comprising determining, according to the capability information of the UE, whether the UE has an inter-system access capability.  The method according to claim 4, wherein determining, according to the capability information of the UE, whether the UE has different access capabilities includes:  Receiving, by the first network device, capability information of the UE, and determining, according to the capability information, whether the UE has different system access capability; or  The first network device receives the capability information of the UE, and transmits the capability information to the second network device, where the second network device determines, according to the capability information, whether the UE has a different system access capability.  The method according to claim 5, wherein the first network device is a base station controller BSC, and the second network device is a mobile switching center server MSC Server.  The method according to claim 1 or 2, wherein when the UE has an inter-system access capability, the base station controller BSC or the mobile switching center server MSC Server sends the hetero-system neighbor cell information to the UE. .  8. A network device, comprising:  The storage unit is configured to store information about the neighboring cell of the different system. a sending unit, configured to send, to the UE, when the user equipment UE has different system access capability Stored heterogeneous neighbor cell information.  The network device according to claim 8, further comprising:  a receiving unit, configured to receive capability information of the user terminal UE;  a determining unit, configured to determine, according to capability information of the UE received by the receiving unit, whether the UE has different system access capability;  When the determining unit determines that the UE has the different system access capability, the sending unit is notified to send the stored different system neighbor cell information to the UE.  10. A communication system for notifying a user terminal of different system neighbor cell information, comprising: a first network device and a second network device, wherein:  The first network device is configured to receive capability information reported by the user terminal UE, and transmit the capability information to the second network device;  The second network device is configured to receive capability information of the UE, determine, according to the capability information, whether the UE has an inter-system access capability, and when the determination result is yes, send the stored hetero-system neighbor to the UE. Cell information.  The communication system according to claim 10, wherein the first network device is a base station controller BSC, and the second network device is a mobile switching center server MSC Server.  12. A communication system for notifying a user terminal of different system neighbor cell information, comprising: a first network device and a second network device, wherein:  The first network device is configured to receive the capability information reported by the user terminal UE, determine, according to the capability information, whether the UE has the different system access capability, and report the determination result to the second network device;  The second network device is configured to receive the determination result, and when the determination result is yes, send the stored different system neighbor cell information to the UE.  The communication system according to claim 12, wherein the first network device is a base station controller BSC, and the second network device is a dynamic switching center server MSC Server.