WO2018137579A1 - 通信方法和设备 - Google Patents

通信方法和设备 Download PDF

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Publication number
WO2018137579A1
WO2018137579A1 PCT/CN2018/073630 CN2018073630W WO2018137579A1 WO 2018137579 A1 WO2018137579 A1 WO 2018137579A1 CN 2018073630 W CN2018073630 W CN 2018073630W WO 2018137579 A1 WO2018137579 A1 WO 2018137579A1
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WO
WIPO (PCT)
Prior art keywords
communication system
terminal
area
cell
base station
Prior art date
Application number
PCT/CN2018/073630
Other languages
English (en)
French (fr)
Inventor
彭文杰
戴明增
张宏卓
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to RU2019126658A priority Critical patent/RU2747990C2/ru
Priority to EP18744831.1A priority patent/EP3565378B1/en
Priority to JP2019560445A priority patent/JP7110235B2/ja
Priority to KR1020197023780A priority patent/KR102252806B1/ko
Priority to BR112019015351-9A priority patent/BR112019015351A2/pt
Priority to MX2019008810A priority patent/MX2019008810A/es
Publication of WO2018137579A1 publication Critical patent/WO2018137579A1/zh
Priority to US16/521,354 priority patent/US11290871B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • 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
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a communication method and device.
  • wireless networks are becoming more and more popular, and the performance requirements of wireless networks are becoming higher and higher, so wireless networks are constantly evolving to improve the performance of wireless networks.
  • evolution of wireless networks when terminals move between new and old network standards, there is often a problem of insufficient communication reliability.
  • the embodiment of the present application provides a communication method and device to improve communication reliability of the terminal.
  • the present application provides a communication method, including: a base station connected to a core network of a first communication system and a core network of a second communication system in a communication system supporting a first communication system and a second communication system,
  • the base station broadcasts the first area identifier, where the first area identifier is an area identifier used for location management of the terminal in the first communication system.
  • the terminal When the terminal enters the cell under the base station, the terminal receives the information broadcast by the base station, if the terminal supports the first communication standard and a second communication system, when the terminal enters the cell under the base station from the cell of the first communication system, the base station broadcasts the second area identifier, where the second area identifier is an area identifier used for location management of the terminal in the second communication system.
  • the terminal initiates a regional update to the core network of the second communication system; when the terminal enters the cell under the base station from the cell of the second communication system, the base station broadcasts the second area identifier, but when the second area identifier is not in the current area list of the terminal, the terminal A zone update is initiated to the core network of the second communication system.
  • the first communication system may be 4G
  • the second communication system may be 5G.
  • the method further includes: the terminal sending the first indication cell to the base station, where the first indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the second communication system.
  • the method further includes: before the terminal initiates the area update to the core network of the second communication system, the terminal sends the capability information of the terminal to the base station, and if the capability information indicates that the terminal supports the second communication standard, the terminal There is no need to send a first indicator cell to the base station.
  • the method when the terminal enters the cell under the base station from the cell of the second communication system, the method further includes: the terminal initiating the area update to the core network of the first communication system.
  • the method further includes: the terminal sending the second indication cell to the base station, where the second indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the first area is identified as the tracking area code TAC and the second area is identified as the paging area code PAC.
  • the first area identifier and the second area identifier are in the same format, and the method further includes:
  • the terminal receives the first indication information and the second indication information, where the first indication information is used to indicate that the first area identifier is used in the first communication system, and the second indication information is used to indicate that the second area identifier is used in the second communication system; or
  • the terminal receives the indication information, where the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default for the second communication system; or
  • the terminal receives the indication information, where the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the present application provides a communication method, including: supporting, in a communication system supporting a first communication system and a second communication system, a base station supporting a core network connected to a core network of a first communication system and a second communication system
  • the base station broadcasts the first area identifier and the second area identifier, where the first area identifier is used to identify an area used for location management of the terminal in the first communication system, and the second area identifier is used to identify the second communication system used to identify An area where the terminal performs location management; when the terminal enters the cell under the base station from the cell of the first communication system, or the terminal enters the cell under the base station from the cell of the second communication system and the second area identifier does not belong to the current area list of the terminal
  • the base station receives the first area update request sent by the terminal; the base station sends a first area update request to the core network of the second communication system.
  • the method further includes:
  • the base station receives the first indication cell sent by the terminal, where the first indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the second communication system; and the base station sends the first area to the core network of the second communication system.
  • Update request including:
  • the base station sends a first area update request to the core network of the second communication system according to the first indication cell.
  • the method when the terminal enters the cell under the base station from the cell of the second communication system, the method further includes:
  • the base station sends a second area update request to the core network of the first communication system.
  • the method further includes: the base station receiving the second indication cell sent by the terminal, where the second indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the first communication system, and The base station sends a second area update request to the core network of the first communication system, including:
  • the base station sends a second area update request to the core network of the first communication system according to the second indication cell.
  • the first area identifier and the second area identifier format are different.
  • the first area is identified as the tracking area code TAC and the second area is identified as the paging area code PAC.
  • the first area identifier and the second area identifier are in the same format, and the method further includes:
  • the base station sends the first indication information and the second indication information to the terminal, where the first indication information is used to indicate that the first area identifier is used in the first communication system, and the second indication information is used to indicate that the second area identifier is used in the second communication system; or,
  • the base station sends the indication information to the terminal, where the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default for the second communication system; or
  • the base station sends the indication information to the terminal, where the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the present application provides a communication device for supporting a communication system of a first communication system and a second communication system, the communication system further comprising a core network supporting the first communication system and a core of the second communication system
  • the network-connected base station the information broadcast by the base station includes a first area identifier, where the first area identifier is used to identify an area for performing location management on the terminal in the first communication system, wherein the terminal supports the first communication standard and the first
  • the second communication system the device is located at the terminal, and includes:
  • a receiving unit configured to receive information broadcast by the base station
  • the processing unit is configured to: when the terminal enters the cell under the base station from the cell of the first communication system, and the information broadcast by the base station includes the second area identifier, initiate a regional update to the core network of the second communication system, where the second area identifier is used by the terminal An area for identifying a location management of a terminal in the second communication system; or
  • the area is initiated to the core network of the second communication system.
  • the updating wherein the second area identifier is used to identify an area in the second communication system for performing location management on the terminal.
  • the processing unit is further configured to send a first indication cell to the base station, where the first indication cell is used to indicate that the area update initiated by the processing unit is initiated to a core network of the second communication system.
  • the processing unit when the terminal enters the cell under the base station from the cell of the second communication system, the processing unit is further configured to initiate a regional update to the core network of the first communication system.
  • the processing unit is further configured to send a second indication cell to the base station, where the second indication cell is used to indicate that the area update initiated by the processing unit is initiated to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the processing unit is further configured to:
  • the first indication information is used to indicate that the first area identifier is used for the first communication system
  • the second indication information is used to indicate that the second area identifier is used for the second communication system
  • the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default for the second communication system; or
  • the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the present application provides a communication device for supporting a communication system of a first communication system and a second communication system, the communication system including a core network supporting a core network and a second communication system of the first communication system A connected base station, the device is located at the base station, and includes:
  • a first sending unit configured to broadcast a first area identifier and a second area identifier, where the first area identifier is used to identify an area used for location management of the terminal in the first communication system, and the second area identifier is used to identify the second An area used for location management of a terminal in a communication system;
  • a receiving unit configured to: when the terminal enters the cell under the base station from the cell of the first communication system, or the terminal enters the cell under the base station from the cell of the second communication system, and the second area identifier does not belong to the current area list of the terminal, a first area update request sent by the terminal;
  • a second sending unit configured to send a first area update request to the core network of the second communication system.
  • the receiving unit is further configured to receive the first indication cell sent by the terminal, where the first indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the second communication system, and
  • the second sending unit is configured to send the first area update request to the core network of the second communication system according to the first indication cell.
  • the receiving unit is further configured to: when the terminal enters the cell under the base station from the cell of the second communication system, the receiving terminal sends a second area update request to the core network of the first communication system, and the second The sending unit is further configured to send a second area update request to the core network of the first communication system.
  • the receiving unit is further configured to receive the second indication cell sent by the terminal, where the second indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the first communication system, and
  • the second sending unit is configured to send a second area update request to the core network of the first communication system according to the second indication cell.
  • the first area identifier and the second area identifier format are different.
  • the first area identifier and the second area identifier are in the same format, and the first sending unit is further configured to:
  • the first indication information is used to indicate that the first area identifier is used for the first communication system
  • the second indication information is used to indicate that the second area identifier is used for the second communication system
  • the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default for the second communication system;
  • the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the present application provides a computer program for performing the method of the above first aspect when executed by a processor.
  • the present application provides a computer program for performing the method of the above second aspect when executed by a processor.
  • a program product such as a computer readable storage medium, comprising the program of the fifth aspect is provided.
  • a program product such as a computer readable storage medium, comprising the program of the sixth aspect is provided.
  • the base station broadcast supporting the core network of the first communication system and the core network of the second communication system broadcasts the first area identifier and the second area identifier for the two communication systems, so that the two are supported.
  • the terminal of the communication system can receive two area identifiers, perform area update according to the second area identifier, and access the communication system of the second communication system or perform regional update in time to lower the terminal. The probability of paging failure increases the communication reliability of the terminal.
  • FIG. 1 is a schematic diagram of a scenario provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of still another scenario provided by an embodiment of the present application.
  • FIG. 4 is a signaling diagram of a communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of still another scenario provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of still another scenario provided by an embodiment of the present application.
  • FIG. 7 is a signaling diagram of still another communication method according to an embodiment of the present application.
  • FIG. 8 is a signaling diagram of still another communication method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of still another scenario provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another base station according to an embodiment of the present application.
  • the embodiments of the present application are applied to a communication system supporting two different communication systems.
  • the communication system of different communication systems refers to a communication system using different radio access technologies (RATs), and the first communication is used for two different communication systems.
  • the system and the second communication system are distinguished.
  • the first communication system adopts a first RAT, for example, the first RAT is Long Term Evolution (LTE), that is, the first communication system is 4G;
  • the second communication system adopts a second RAT, for example, the second RAT is a new generation wireless connection.
  • New Radio Access Technology (NR) that is, the second communication system is 5G.
  • the 4G communication system and the 5G communication system include a base station and a core network.
  • a terminal also called a User Equipment (UE) is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • UE User Equipment
  • Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • a base station also known as a radio access network (RAN) device, is a device that accesses a terminal to a wireless network, and includes base stations in various communication systems, including but not limited to: transmission and reception.
  • Transmission Reception Point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (Base Station Controller, BSC), Base Transceiver Station (BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU).
  • TRP Transmission Reception Point
  • eNB evolved Node B
  • RNC radio network controller
  • NB Node B
  • BSC Base Station Controller
  • BTS Base Transceiver Station
  • home base station for example, Home evolved NodeB, or Home Node B, HNB
  • BBU BaseBand Unit
  • AP Wifi Access Point
  • the base stations in the communication systems of different communication systems are different.
  • the base station of the 4G communication system is referred to as an LTE eNB
  • the base station of the 5G communication system is referred to as an NR gNB
  • the base station supporting both the 4G communication system and the 5G communication system is referred to as an eLTE eNB, and these names are only convenient distinctions, and Not limited.
  • Multiple means two or more, and other quantifiers are similar. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic diagram of a communication scenario according to an embodiment of the present application.
  • the 5G communication system includes a Next Generation Core (NGC) and a Radio Access Network (RAN) connected to the NGC, and the RAN connected to the NGC includes an NR gNB 11 and an eNB 12.
  • the communication system includes an Evolved Packet Core (EPC) and an EPC connected to the EPC.
  • the RAN connected to the EPC includes an eNB 13 and an eNB 12.
  • the eNB 13 supports the connection with the EPC, and does not support the connection with the NGC.
  • the eNB 13 in order to distinguish between the eNB 13 and the eNB 12, the eNB 13 may be referred to as an LTE eNB, and the eNB 12 may be referred to as an eLTE eNB.
  • the LTE eNB When the communication network is deployed, the LTE eNB may be upgraded to obtain an eLTE eNB, so that the eLTE eNB can connect to the NGC.
  • 110 denotes a cell under NR gNB 11
  • 120 denotes a cell under eNB 12
  • 130 denotes a cell under eNB 13.
  • TAC Tracking Area Code
  • PLMN ID Public Land Mobile Network Identity
  • TAI Tracking Area Identity
  • the TAC (or TAI) is used to identify an area in the communication system for location management of the terminal.
  • the Tracking Area Update (TAU) mechanism in the LTE system is: the terminal moves in an idle state, and if the tracking area identifier (TAI) of the cell currently entered by the terminal is in the TAI list of the terminal, The terminal does not trigger the TAU. If the TAI of the cell currently accessed by the terminal is not in the TAI list of the terminal, the terminal triggers the TAU.
  • TAU Tracking Area Update
  • the TAI of the TA where the cell 120 is located can inherit the TAI in the 4G communication system, so as not to affect the TA plan of the existing 4G communication system.
  • the existing TAU mechanism when the terminal moves to the cell 120, it is often planned that the cell 110 and the cell 120 are planned in the same TA or the same TA list or the cell 120 and the cell 130 are planned in the same TA or the same TA list. The TAU is not initiated, resulting in insufficient communication reliability of the terminal.
  • the terminal 14 supports both the 4G communication system and the 5G communication system.
  • the terminal 14 moves from the cell 130 to the cell 120 in the idle state, since the cell 130 and the cell 120 are planned in the same TA, the terminal 14 does not initiate the TAU.
  • the terminal 14 does not access the NGC and cannot obtain the service of the 5G network.
  • the TAI list configured by the NGC for the terminal 14 includes both the TAI of the TA where the cell is located under the eLTE eNB and the TAI of the TA where the cell is located under the NR gNB.
  • the TAI list configured by the NGC for the terminal 14 includes The TSI1 of the TA where the cell 120 under the eNB 12 is located and the TAI2 of the TA where the cell 110 is located under the NR gNB11. Based on the TAU mechanism in the LTE system, when the terminal 14 moves from the cell 110 to the cell 120 in the idle state, the terminal 14 receives the TAI1 of the cell 120 broadcast by the eNB 12, since the TAI1 of the cell 120 is in the TAI list of the terminal 14, Terminal 14 does not trigger TAU.
  • the terminal 14 When the terminal 14 continues to move and moves from the cell 120 to the cell 130, the terminal 14 receives the TAI of the cell 130 broadcast by the eNB 13, and since the cell 120 follows the TAI division rule in the LTE system, the TAI of the cell 120 may be related to the cell 130. The TAI is consistent. If the TAI of the cell 130 is also TAI1, since the TAI 1 of the cell 130 is also in the TAI list of the terminal 14, the terminal 14 does not trigger the TAU. When the terminal 14 stays in the cell 130 and the NGC has downlink traffic to be sent to the terminal 14, since the eNB 13 is not connected to the NGC, the NGC will not be able to page to the terminal 14.
  • the existing TA planning mechanism has a problem of insufficient communication reliability.
  • two types of TAs are planned on the base station supporting the two communication systems, and the two area identifiers of the two types of TAs are broadcasted, and the following embodiments are specifically provided. The embodiment is explained:
  • FIG. 2 is a schematic diagram of a scenario according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of another scenario provided by an embodiment of the present application
  • FIG. 4 is a signaling diagram of a communication method according to an embodiment of the present application
  • the area identifier of the cell in the 4G communication system and the area identifier of the cell in the 5G communication system adopt the same division rule.
  • the cell in the 4G communication system The area identifier and the area identifier of the cell in the 5G communication system may also adopt different division rules.
  • two different TAIs can be allocated for a cell under the eLTE eNB.
  • TAI1 and TAI2 are used for the 4G communication system.
  • TAI1 is used for 4G communication system
  • TAI2 is used for 5G communication system as an example
  • TAI1 is used to identify the area for location management of the terminal in 4G communication system
  • TAI2 is used to identify 5G communication system.
  • the information broadcast by the eNB 12 may include both TAI1 and TAI2, and the terminal 14 enters the eNB 12.
  • the cell 120 has the following two situations:
  • the terminal 14 enters the cell 120 under the eNB 12 from the cell 130 under the eNB 13, and the TAI list stored in the terminal 14 before the terminal 14 enters the cell 120 under the eNB 12 from the cell 130 under the eNB 13.
  • the EPC is allocated by the EPC.
  • the TAI list of the EPC allocation does not include the TAI of the cell in the 5G communication system.
  • the terminal 14 receives the information broadcast by the eNB 12, and the eNB receives the information.
  • the information broadcasted by the 12 includes TAI1 and TAI2, and the terminal 14 can receive TAI1 and TAI2 at the same time, and can also receive TAI1 and TAI2 in a time-sharing manner.
  • the terminal 14 supports the 4G communication system and the 5G communication system at the same time, when the terminal 14 enters the cell 120 under the eNB 12 from the cell 130 under the eNB 13, the terminal 14 initiates a TAU to the NGC as soon as the eNB 12 is connected to the NGC, that is, when the terminal 14 When the cell 130 under the eNB 13 enters the cell 120 under the eNB 12, whether the TAI of the 4G communication system broadcast by the eNB 12, such as TAI1, is in the TAI list of the terminal, as long as the information broadcast by the eNB 12 includes the TAI of the 5G communication system, the terminal 14 initiates a TAU to the core network NGC of the 5G communication system.
  • the eNB 12 Since the eNB 12 is connected to the EPC and the NGC at the same time, the eNB 12 only forwards and does not resolve the TAU initiated by the terminal 14. Therefore, when the TAU initiates the TAU, the terminal 14 also needs to send the first indication cell to the eNB 12, the first indication. The cell is used to indicate that the TAU initiated by the terminal 14 is initiated to the NGC.
  • the first indicator cell may be sent to the eNB 12 together with the TAU, for example, the first indicator cell and the TAU message are sent to the eNB 12 in the same Radio Resource Control (RRC) message; the first indicator cell
  • RRC Radio Resource Control
  • the TAU can also be sent to the eNB 12 separately.
  • the terminal 14 carries the first indication cell in the RRC message and sends the RRC message to the eNB 12.
  • the terminal 14 passes the non-access stratum (Non-Access Stratum, The NAS) message sends a TAU to the NGC.
  • the signaling interaction between the terminal, the eLTE eNB, and the NGC includes the following S41-S44:
  • the eLTE eNB broadcasts TAI1 applicable to the 4G communication system and TAI2 applicable to the 5G communication system to the terminal.
  • the terminal sends the first indication cell and the TAU to the eLTE eNB.
  • the first indication cell is used to indicate that the TAU initiated by the terminal is initiated to the NGC, and the TAU includes the TAI2.
  • the eLTE eNB sends the TAU to the NGC according to the first indication cell.
  • the NGC sends the TAI list 1 to the terminal by using the eLTE eNB.
  • the eNB 12 broadcasts the TAI 1 for compatibility with terminals that only support the 4G communication system.
  • the terminal 14 is a terminal that only supports the 4G communication system, and the cell 130 and the cell 120 are both 4G communication systems.
  • the TAIs of the two cells may be the same, and may be different.
  • the TAI list of the terminal 14 is allocated by the EPC, and after the terminal 14 moves from the cell 130 to the cell 120, the terminal 14 It is necessary to detect whether the TAI1 broadcast by the eNB 12 is in the TAI list of the terminal 14.
  • the terminal 14 does not trigger the TAU, and if the TAI1 broadcast by the eNB 12 is not in the TAI list of the terminal 14. In the middle, the terminal 14 needs to initiate a TAU to the EPC.
  • the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, and is stored in the terminal 14 before the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11.
  • the TAI list is allocated by the NGC.
  • the TAI list of the NGC allocation does not include the TAI1.
  • the TAI of the 5G communication system broadcasted by the eNB 12, for example, TAI2 is detected at the terminal.
  • the terminal 14 if the TAI 2 is not in the TAI list of the terminal 14, the terminal 14 initiates a TAU to the NGC. If the TAI 2 is in the TAI list of the terminal 14, the terminal 14 does not initiate a TAU to the NGC.
  • the terminal 14 may not detect the 4G broadcast by the eNB 12. Whether the TAI1 of the communication system is in the TAI list of the terminal 14, in other embodiments, when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, the terminal 14 also needs to detect the 4G communication broadcast by the eNB 12. Whether the TAI1 of the system is in the TAI list of the terminal 14.
  • the terminal 14 when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, the terminal 14 does not detect whether the TAI1 of the 4G communication system broadcast by the eNB 12 is in the TAI list of the terminal 14, however, After the terminal 14 continues to move, after moving from the cell 120 to the cell 130, the terminal 14 will detect whether the TAI broadcast by the eNB 13 is in the TAI list of the terminal 14, for example, the TAI broadcast by the eNB 13 is TAI1, and the TAI1 is not in the TAI list of the terminal 14. In the middle, the terminal 14 initiates a TAU to the EPC.
  • the base station connected to the core network of the first communication system and the core network of the second communication system is broadcasted to broadcast the first area identifier and the second area identifier for the two communication systems, so that the two communication systems are supported.
  • the terminal may receive two area identifiers, perform area update according to the second area identifier, and access the communication system of the second communication system or perform regional update in time to reduce terminal paging failure. The probability of improving the communication reliability of the terminal.
  • the eLTE eNB acquires the capability information of the terminal, and if the capability information indicates that the terminal supports the 5G communication system, or the terminal supports 4G and In the 5G communication system, when the terminal initiates the TAU to the NGC through the eLTE eNB, the terminal does not need to send the indication information to the eLTE eNB, and directly sends the TAU to the eLTE eNB, and the eLTE eNB directly sends the TAU to the NGC according to the capability information of the terminal. If the capability information indicates that the terminal only supports the 4G communication system, when the terminal initiates the TAU, the eLTE eNB directly sends the TAU to the EPC.
  • FIG. 6 is a schematic diagram of still another scenario provided by the embodiment of the present application
  • FIG. 7 is a signaling diagram of still another communication method according to an embodiment of the present application.
  • the information broadcast by the NR gNB 11 includes TAI3
  • the information broadcast by the eNB 12 includes TAI1 and TAI2
  • the TAI1 is used for the 4G communication system
  • the TAI2 is used for the 5G communication system
  • the information broadcast by the eNB 13 includes the TAI1
  • the terminal 14 is simultaneously Supporting 4G and 5G communication systems
  • the terminal 14 is registered in the NGC
  • the TAI list allocated by the NGC for the terminal 14 includes TAI3.
  • the eNB 12 broadcasts.
  • the TAI2 for the 5G communication system is not in the TAI list of the terminal 14, so the terminal 14 initiates the TAU to the NGC, the NGC returns the TAI list 1 to the terminal 14, the TAI list 1 includes the TAI2, and the terminal 14 stores the original TAI list. Updated to TAI List 1.
  • the terminal 14 continues to move, from the cell 120 under the eNB 12 to the cell 130 under the eNB 13, since the TAI1 broadcast by the eNB 13 is not in the current TAI list 1 of the terminal 14, the eNB 13 is the base station of the 4G communication system, and the cell 130 is In the LTE-covered cell, the eNB 13 is not connected to the NGC, the terminal 14 initiates a TAU to the EPC, the EPC returns the TAI list 2 to the terminal 14, the TAI list 2 includes TAI1, and the terminal 14 updates its stored TAI list 1 to the TAI list 2 .
  • the format of the TAU initiated by the terminal 14 to the NGC is different from the format of the TAU initiated by the terminal 14 to the EPC.
  • the terminal 14 initiates a TAU of the 5G NAS format to the NGC, and the terminal 14 initiates the TAU of the EPC NAS format to the EPC.
  • the format of the TAU may be determined according to the support capability of the cell in which the terminal 14 is located. If the cell in which the terminal 14 is located supports the NGC connection, the 5G is preferentially initiated.
  • the TAU of the NAS format if the cell in which the terminal 14 is located only supports the EPC connection, initiates the TAU in the EPC NAS format.
  • the terminal 14 supports both the 4G and 5G communication systems.
  • the TAI1 broadcasted by the eNB 13 is not in the current TAI of the terminal 14.
  • the eNB 13 is the base station of the 4G communication system
  • the cell 130 is the LTE-covered cell
  • the eNB 13 is not connected to the NGC
  • the terminal 14 initiates the TAU in the EPC NAS format to the EPC.
  • the terminal 14 When the terminal 14 enters the cell 120 under the eNB 12 from the cell 130 under the eNB 13, regardless of whether the TAI1 of the 4G communication system broadcast by the eNB 12 is in the TAI list of the terminal, as long as the eNB 12 is connected to the NGC, the terminal 14 is to the 5G communication system.
  • the core network NGC sends a TAU in 5G NAS format. If the terminal 14 moves back and forth between the cell 120 under the eNB 12 and the cell 130 under the eNB 13, the terminal 14 needs to send different formats of TAUs to different core networks for each cell reselection, that is, frequently send 5G NAS to the NGC.
  • the TAU of the format and the frequent transmission of the TAU in the EPC NAS format to the EPC have a so-called ping-pong phenomenon.
  • the terminal 14 when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, the terminal 14 initiates a TAU to the EPC. Furthermore, when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, whether the terminal 14 initiates a TAU to the NGC, depending on whether the TAI for the 5G communication system broadcast by the eNB 12 is at the current TAI of the terminal 14. In the list, the principle is the same as the embodiment shown in FIG. 5, and details are not described herein again.
  • the terminal 14 assuming that the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, the TAI for the 5G communication system broadcast by the eNB 12 is in the TAI list configured by the NGC to the terminal 14, then the terminal 14 does not need to initiate a TAU to the NGC, but still needs to initiate a TAU to the EPC.
  • the EPC returns a TAI list to the terminal 14.
  • the terminal 14 when the terminal 14 receives the TAI list sent by the EPC in the cell 120 under the eNB 12, the terminal 14 retains the original TAI list, that is, the TAI list that the NGC configures for the terminal 14, and stores the TAI list sent by the EPC.
  • the terminal 14 needs to send the second indication cell to the eNB 12, the second indication.
  • the cell is used to indicate that the TAU initiated by the terminal 14 is initiated to the EPC.
  • the signaling interaction between the terminal, the eLTE eNB, and the EPC includes the following S71-S74:
  • the eLTE eNB broadcasts TAI1 applicable to the 4G communication system and TAI2 applicable to the 5G communication system to the terminal.
  • the terminal sends the second indication cell and the TAU to the eLTE eNB.
  • the second indication cell is used to indicate that the TAU initiated by the terminal is initiated to the EPC, and the message sent by the terminal to the eLTE eNB further includes TAI1.
  • the eLTE eNB sends the TAU to the EPC according to the second indication cell.
  • the EPC sends the TAI list 2 to the terminal by using the eLTE eNB.
  • the TAI list 2 includes TAI1.
  • the terminal 14 when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, the terminal 14 initiates a TAU to the EPC, which may be that the terminal 14 enters the eLTE eNB from the cell 110 under the NR gNB 11 each time.
  • the terminal 14 initiates, or the terminal 14 determines that the ping-pong phenomenon has occurred, and may also be initiated by the terminal 14 after the ping-pong phenomenon occurs in the core network discovery network.
  • the terminal when the terminal enters the cell under the eLTE eNB from the cell of the 5G communication system, the terminal initiates the TAU to the 4G core network through the eLTE eNB, and the 4G core network sends the TAI list to the terminal, and the terminal enters the eLTE eNB from the cell under the eLTE eNB.
  • the TAI list may include the TAI of the cell under the eLTE eNB and the TAI of the cell under the LTE eNB around the cell under the eLTE eNB when the terminal is in the eLTE eNB.
  • the terminal does not need to go to a different core for each cell reselection.
  • the network sends TAUs of different formats, which avoids the frequent transmission of the TAU of the 5G NAS format to the NGC and the frequent transmission of the TAU of the EPC NAS format to the EPC, thereby avoiding the so-called ping-pong phenomenon.
  • FIG. 8 is a signaling diagram of still another communication method according to an embodiment of the present application.
  • the terminal 14 supports both the 4G and 5G communication systems, when the terminal 14 enters the cell 120 under the eNB 12 from the cell 110 under the NR gNB 11, or the cell under the eNB 13
  • the terminal 14 can simultaneously initiate the TAU in the EPC NAS format to the EPC and the TAU in the 5G NAS format to the NGC. Since the eNB 12 simultaneously connects the EPC and the NGC, the eNB 12 initiates the TAU only to the terminal 14.
  • the terminal 14 When the terminal 14 simultaneously initiates the TAU in the EPC NAS format and the TAU in the 5G NAS format, the terminal 14 also needs to simultaneously send the first indication cell and the second indication cell to the eNB 12, the first indication cell.
  • the TAU for indicating the 5G NAS format initiated by the terminal is recorded as TAU1 is initiated to the NGC, and the second indication information is used to indicate that the TAU of the EPC NAS format initiated by the terminal is recorded as TAU2 is initiated to the EPC.
  • the signaling interaction between the terminal, the eLTE eNB, the EPC, and the NGC includes the following S81-S86:
  • the eLTE eNB broadcasts TAI1 applicable to the 4G communication system and TAI2 applicable to the 5G communication system to the terminal.
  • the terminal sends the first indication cell and TAU1, and the second indication cell and TAU2 to the eLTE eNB.
  • the first indication cell is used to indicate that the TAU1 initiated by the terminal is initiated to the NGC
  • the second indication cell is used to indicate that the TAU2 initiated by the terminal is initiated to the EPC
  • the TAU1 includes the TAI2
  • the TAU2 includes the TAI1.
  • the eLTE eNB sends the TAU1 to the NGC.
  • the eLTE eNB sends the TAU2 to the EPC.
  • the NGC sends the TAI list 1 to the terminal by using the eLTE eNB.
  • the EPC sends the TAI list 2 to the terminal through the eLTE eNB.
  • the TAI list 1 includes TAI2 and TAI3
  • the TAI list 2 includes TAI1
  • the TAI list 1 and the TAI list 2 may constitute a total TAI list
  • the TAI list includes the TAI list 1
  • the TAI2 of the 5G communication system broadcast by the eNB 12 is also in the TAI list of the larger set, and therefore, when the terminal 14 moves back and forth between the cell 110 and the cell 120 At the time, the terminal 14 does not need to initiate the TAU frequently.
  • the TAI1 of the 4G communication system broadcast by the eNB 12 is in a larger set of TAI lists
  • the TAI1 broadcast by the eNB 13 is also in the TAI list of a larger set, and therefore, when the terminal 14 is between the cell 120 and the cell 130.
  • the terminal 14 When moving back and forth, the terminal 14 does not need to frequently initiate TAU, that is, the TAI list 1 and the TAI list 2 constitute a larger set of TAI lists, so that the terminal 14 does not move between cells corresponding to the larger set of TAI lists.
  • the terminal 14 needs to frequently initiate TAUs of different formats to different core networks when the core network corresponding to the terminal 14 changes.
  • the terminal 14 initiates a TAU in the EPC NAS format to the EPC and a TAU in the 5G NAS format to the NGC, and may be initiated by the terminal 14 each time the terminal 14 enters the cell under the eLTE eNB. It is initiated after the terminal 14 determines that the ping-pong phenomenon has occurred, and may also be initiated by the terminal 14 after the ping-pong phenomenon occurs in the core network discovery network.
  • the 4G core network and the 5G core network respectively initiate regional update in different formats, and the 4G core network and the 5G core network respectively allocate different TAI lists to the terminal, and two TAIs.
  • the list constitutes a larger set of TAIs, so that the terminal does not initiate TAU when moving between the cells corresponding to the larger set of TAI lists, and the terminal frequently initiates TAU when the core network corresponding to the terminal changes. Empty resources.
  • FIG. 9 is a schematic diagram of still another scenario provided by an embodiment of the present application.
  • the information broadcast by the eNB 12 may include two different format area identifiers, such as a first area identifier and a second area identifier, where the first area identifier may be a tracking area code ( Tracking Area Code (TAC), the second area identifier may be a paging area code (PAC), and the paging area identifier is used because the TAI includes a Public Land Mobile Network Identity (PLMN ID) and a TAC. (Paging Area Identity, PAI) includes the PLMN ID and the PAC.
  • the formats of the TAC and the PAC are different, for example, the lengths are different.
  • the PLMN ID is fixed. Since the formats of the TAC and the PAC are different, the formats of the TAI and the PAI are also different. As shown in FIG. 9, TAI1 is used to identify an area for location management of the terminal in the 4G communication system, and the PAI 1 is used to identify an area in the 5G communication system for location management of the terminal. When the terminal 14 enters the cell under the eNB 12, the eNB 12 broadcasts TAI1 and PAI1.
  • the terminal 14 can determine that the PAI1 is used for the 5G communication system according to the format of the TAI1 and the PAI1, TAI1 Used in 4G communication systems.
  • the terminal 14 enters the cell under the eNB 12, the eNB 12 broadcasts TAC1 and PAC1.
  • the terminal 14 can determine that the PAC1 is used for the 5G communication system according to the format of the TAC1 and the PAC1.
  • TAC1 is used in 4G communication systems.
  • the eLTE eNB broadcasts the first area identifier and the second area identifier in different formats, so that the terminal in the cell under the eLTE eNB can quickly determine the use according to different forms of the first area identifier and the second area identifier.
  • the information broadcast by the eNB 12 may include two area identifiers in the same format, for example, a first area identifier and a second area identifier, where the first area identifier is TAC1, and the second area is The identifier is TAC2. Since the TAI includes the PLMN ID and the TAC, if the operator of the terminal 14 is fixed, the PLMN ID is fixed. If TAC1 and TAC2 are different, TAI1 and TAI2 are different. If the terminal 14 supports the 4G and the 5G, the eNB 12 also needs to send the first indication information and the second indication information to the terminal 14.
  • the first indication information is used to indicate that the first area identifier, that is, TAC1 is used for 4G, and the second indication information is used.
  • the second area identifier is used for the 5G;
  • the eNB 12 sends an indication information to the terminal 14 for indicating that the second area identifier, TAC2, is used for 5G, and the first area identifier, TAC1, is used by default for 4G. If the terminal 14 only supports 4G, the eNB 12 only needs to send an indication information to the terminal 14.
  • the indication information is used to indicate that the first area identifier, that is, TAC1 is used for 4G, or the indication information is used to indicate the second area identifier. That is, TAC2 is used for 5G.
  • the first indication information and the second indication information are sent by the eLTE eNB to identify the first area identifier and the second area identifier broadcast by the eLTE eNB, and the area identifier for the 5G communication system and the 4G communication system.
  • the area identifier is such that the terminal can accurately distinguish the first area identifier and the second area identifier in the same format that the eLTE eNB broadcasts.
  • the eLTE eNB sends an indication information to identify the first area identifier and the second area identifier broadcast by the eLTE eNB.
  • the area identifier for the 5G communication system or the area identifier for the 4G communication system so that the terminal can accurately distinguish one of the first area identifier and the second area identifier of the same format broadcast by the eLTE eNB, and the other can be defaulted. Identification, thereby effectively reducing the amount of data sent by the eLTE eNB.
  • FIG. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the first communication system may be 4G
  • the second communication system may be 5G
  • the communication system further includes a core network supporting the first communication system.
  • a base station connected to the core network of the second communication system, the information broadcast by the base station includes a first area identifier, where the first area identifier is used to identify an area used for location management of the terminal in the first communication system, and the terminal supports the first
  • the communication system and the second communication system are as shown in FIG. 10, and the communication device is located at the terminal, and includes: a receiving unit 101 and a processing unit 102.
  • the receiving unit 101 is configured to receive the information broadcast by the base station, and the processing unit 102 is configured to: when the terminal enters the cell under the base station from the cell of the first communication system, and the information broadcast by the base station includes the second area identifier, to the second The core network of the communication system initiates an area update, wherein the second area identifier is used to identify an area for performing location management on the terminal in the second communication system; or the processing unit 102 is configured to use the terminal from the second communication system.
  • the area update is initiated to the core network of the second communication system, where the second area identifier is used for An area for performing location management on the terminal in the second communication system is identified.
  • the processing unit 102 is further configured to send a first indication cell to the base station, where the first indication cell is used to indicate that the area update initiated by the processing unit 102 is initiated by the core network of the second communication system. .
  • the processing unit 102 when the terminal enters the cell under the base station from the cell of the second communication system, the processing unit 102 is further configured to initiate a region update to the core network of the first communication system.
  • the processing unit 102 is further configured to send a second indication cell to the base station, where the second indication cell is used to indicate that the area update initiated by the processing unit 102 is initiated to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the first area identifier and the second area identifier are in the same format
  • the receiving unit 101 is further configured to: receive the first indication information and the second indication information, where the first indication information is used to indicate that the first area identifier is used for a first communication system, where the second indication information is used to indicate that the second area identifier is used for the second communication system; or, the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default.
  • the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the communication device of the embodiment shown in FIG. 10 can be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the first communication system may be 4G
  • the second communication system may be 5G
  • the communication system further includes a core network supporting the first communication system.
  • a base station connected to the core network of the second communication system, as shown in FIG. 11, the communication device is located at the base station, and includes: a first sending unit 111, a receiving unit 112, and a second sending unit 113, where the first sending unit 111 is used.
  • the receiving unit 112 is configured to: when the terminal enters the cell under the base station from the cell of the first communication system, or the terminal enters the cell under the base station from the cell of the second communication system, and the second area identifier does not belong to the terminal.
  • the receiving unit 112 is further configured to receive the first indication cell sent by the terminal, where the first indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the second communication system, and
  • the second sending unit 113 is configured to send a first area update request to the core network of the second communication system according to the first indication cell.
  • the receiving unit 112 is further configured to: when the terminal enters the cell under the base station from the cell of the second communication system, the receiving terminal sends a second area update request to the core network of the first communication system, and the second sending The unit 113 is further configured to send a second area update request to the core network of the first communication system.
  • the receiving unit 112 is further configured to receive the second indication cell sent by the terminal, where the second indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the first communication system, and the second The sending unit 113 is configured to send, according to the second indication cell, a second area update request to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the first area identifier and the second area identifier are in the same format
  • the first sending unit 111 is further configured to: send the first indication information and the second indication information to the terminal, where the first indication information is used to indicate the first The area identifier is used in the first communication system, the second indication information is used to indicate that the second area identifier is used in the second communication system, or the indication information is sent to the terminal, where the indication information is used to indicate that the first area identifier is used in the first communication system.
  • the second area identifier is used by default for the second communication system; or, the indication information is sent to the terminal, where the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the communication device of the embodiment shown in FIG. 11 can be used to perform the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • each unit of the above terminal or base station is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated.
  • these units may all be implemented in the form of software by means of processing component calls; or may be implemented entirely in hardware; some units may be implemented by software in the form of processing component calls, and some units may be implemented in the form of hardware.
  • the receiving unit may be a separately set processing element, or may be integrated in a chip such as a base station or a terminal, or may be stored in a memory of a base station or a terminal in the form of a program, by a base station or a terminal.
  • a processing component calls and performs the functions of each of the above units.
  • the implementation of other units is similar.
  • all or part of these units can be integrated or implemented independently.
  • the processing elements described herein can be an integrated circuit with signal processing capabilities.
  • each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above receiving unit is a unit for controlling reception, and the information transmitted by the base station can be received by a receiving device of the terminal or the base station, such as an antenna and a radio frequency device.
  • the above first sending unit is a unit for controlling transmission, and can transmit information to the terminal through a transmitting device of the base station, such as an antenna and a radio frequency device.
  • the second sending unit is a unit for controlling transmission, and can send information to the core network through an interface between the base station and the core network device.
  • the above units may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA).
  • ASICs Application Specific Integrated Circuits
  • DSP digital Singnal processor
  • FPGA Field Programmable Gate Array
  • the processing element can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke the program.
  • CPU central processing unit
  • these units can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 12 is a schematic structural diagram of another terminal according to an embodiment of the present application.
  • the terminal includes a receiver 121, a transmitter 122, a processor 123, and a memory 124.
  • the first communication system may be 4G
  • the second communication system may be 5G
  • the communication system further comprising a base station supporting the core network of the first communication system and the core network of the second communication system, the information broadcast by the base station includes a first area identifier, wherein the first area identifier is used for An area for performing location management on the terminal in the first communication system is identified, and the terminal supports the first communication system and the second communication system.
  • the receiver 121 is configured to receive the information broadcast by the base station, and the processor 123 is configured to: when the terminal enters the cell under the base station from the cell of the first communication system, and the information broadcast by the base station includes the second area identifier, to the second The core network of the communication system initiates an area update, wherein the second area identifier is used to identify an area for performing location management on the terminal in the second communication system; or the processor 123 is configured to enter the terminal from the second communication system.
  • the cell under the base station when the information broadcasted by the base station includes the second area identifier, and the second area identifier does not belong to the current area list of the terminal, initiates an area update to the core network of the second communication system, where the second area identifier is used to identify An area for performing location management on a terminal in the second communication system.
  • the processor 123 is further configured to send a first indication cell to the base station, where the first indication cell is used to indicate that the area update initiated by the processor 123 is initiated to the core network of the second communication system. .
  • the processor 123 when the terminal enters the cell under the base station from the cell of the second communication system, the processor 123 is further configured to initiate a regional update to the core network of the first communication system.
  • the processor 123 is further configured to send a second indication cell to the base station, where the second indication cell is used to indicate that the area update initiated by the processor 123 is initiated to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the first area identifier and the second area identifier are in the same format, and the receiver 121 is further configured to: receive the first indication information and the second indication information, where the first indication information is used to indicate that the first area identifier is used for a first communication system, where the second indication information is used to indicate that the second area identifier is used for the second communication system; or, the indication information is used to indicate that the first area identifier is used for the first communication system, and the second area identifier is used by default.
  • the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the terminal of the embodiment shown in FIG. 12 can be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the receiver 121 and the transmitter 122 can be connected to an antenna.
  • the receiver 121 and the transmitter 122 receive the information transmitted by the base station through the antenna, and send the information to the processor 123 for processing.
  • the processor 123 processes the data of the terminal and transmits it to the base station through the transmitter 122.
  • the memory 124 is used to store a program for implementing the above method embodiments, or the various units of the embodiment shown in FIG. 10, and the processor 123 calls the program to perform the operations of the above method embodiments to implement the various units shown in FIG.
  • part or all of the above units may be implemented by being embedded in a chip of the terminal in the form of an integrated circuit. And they can be implemented separately or integrated. That is, the above units may be configured to implement one or more integrated circuits of the above method, for example, one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital singnal processor) , DSP), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs Application Specific Integrated Circuits
  • microprocessors digital singnal processor
  • FPGAs Field Programmable Gate Arrays
  • FIG. 13 is a schematic structural diagram of another base station according to an embodiment of the present application.
  • the base station includes a transmitter 131, a receiver 132, and a processor 133.
  • the base station supports connection with a core network of a first communication system and a core network of a second communication system.
  • the first communication system may be 4G.
  • the second communication system may be 5G
  • the transmitter 131 is configured to broadcast the first area identifier and the second area identifier, where the first area identifier is used to identify an area used for location management of the terminal in the first communication system, and the second area The identifier is used to identify an area for performing location management on the terminal in the second communication system;
  • the receiver 132 is configured to enter the cell under the base station from the cell of the first communication system, or enter the cell from the cell of the second communication system.
  • the sender 131 is further configured to send the first area update request to the core network of the second communication system.
  • the receiver 132 is further configured to receive the first indication cell sent by the terminal, where the first indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the second communication system, and
  • the transmitter 131 is configured to send the first area update request to the core network of the second communication system by the first indication cell.
  • the receiver 132 is further configured to: when the terminal enters the cell under the base station from the cell of the second communication system, the receiving terminal sends a second area update request to the core network of the first communication system, and the transmitter 131 Also used to send a second region update request to the core network of the first communication system.
  • the receiver 132 is further configured to receive the second indication cell sent by the terminal, where the second indication cell is used to indicate that the area update initiated by the terminal is initiated to the core network of the first communication system, and the transmitter The 131 is configured to send, according to the second indication cell, a second area update request to the core network of the first communication system.
  • the first area identifier and the second area identifier format are different.
  • the first area identifier and the second area identifier are in the same format
  • the sender 131 is further configured to: send the first indication information and the second indication information to the terminal, where the first indication information is used to indicate the first area identifier
  • the second indication information is used to indicate that the second area identifier is used for the second communication system
  • the indication information is sent to the terminal, where the indication information is used to indicate that the first area identifier is used for the first communication system,
  • the second area identifier is used by the second communication system by default; or the indication information is sent to the terminal, where the indication information is used to indicate that the second area identifier is used for the second communication system, and the first area identifier is used by default for the first communication system.
  • the base station of the embodiment shown in FIG. 13 can be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the processor 133 may also be a controller, and is represented as "controller/processor 133" in FIG.
  • the transmitter 131 and the receiver 132 are configured to support the base station to transmit and receive information with the terminal in the above embodiment, and to support radio communication between the terminal and other terminals.
  • the processor 133 performs various functions for communicating with the terminal.
  • On the uplink an uplink signal from the terminal is received via an antenna, demodulated by the receiver 132 (e.g., demodulated into a baseband signal), and further processed by the processor 133 to recover the terminal. Transmitted service data and signaling information.
  • the traffic data and signaling messages are processed by the processor 133 and modulated by the transmitter 131 (e.g., modulating the baseband signal into a high frequency signal) to generate a downlink signal and transmitted to the terminal via the antenna. .
  • the base station may further include a memory 134 for storing program codes and data of the base station.
  • the base station can also include a communication interface 135.
  • the communication interface 135 is used to support the base station to communicate with other network entities (such as network devices in the core network, etc.).
  • the communication interface 135 may be an S1-U interface for supporting the base station to communicate with the SGW.
  • the communication interface 135 may be an S1-MME interface for supporting the base station to communicate with the MME.
  • the processor 133 such as a central processing unit (CPU), may also be one or more integrated circuits configured to implement the above method, for example, one or more application specific integrated circuits (ASICs), Or, one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs application specific integrated circuits
  • DSPs microprocessors
  • FPGAs Field Programmable Gate Arrays
  • the memory 134 may be a memory or a general term for a plurality of storage elements.

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Abstract

本申请实施例提供一种通信方法和设备，用于支持第一通信制式和第二通信制式的通信系统中。该通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，该基站广播的信息包括第一区域标识。该方法包括：终端接收基站广播的信息；当终端从第一通信制式的小区进入基站下的小区时，终端在基站广播的信息包括第二区域标识时，向第二通信制式的核心网发起区域更新；或者，当终端从第二通信制式的小区进入基站下的小区时，终端在基站广播的信息包括第二区域标识且第二区域标识不属于终端当前的区域列表时向第二通信制式的核心网发起区域更新。通过基站广播两个通信制式的区域标识，可以提高终端在小区之间移动时的通信可靠性。

Description

通信方法和设备
本申请要求于2017年1月25日提交中国专利局、申请号为201710061266.0、申请名称为“通信方法和设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术，尤其涉及一种通信方法和设备。
背景技术
随着无线通信技术的发展，无线网络日益普及，人们对无线网络的性能要求也越来越高，于是无线网络不断演进，以提高无线网络的性能。随着无线网络的演进，终端在新旧网络制式间移动时，往往出现通信可靠性不足的问题。
发明内容
本申请实施例提供一种通信方法和设备，以提高终端的通信可靠性。
第一方面，本申请提供一种通信方法，包括：在支持第一通信制式和第二通信制式的通信系统中包括与第一通信制式的核心网和第二通信制式的核心网连接的基站，基站广播第一区域标识，第一区域标识是第一通信制式中用于对终端进行位置管理的区域标识，终端进入基站下的小区时，接收基站广播的信息，如果终端支持第一通信制式和第二通信制式，当终端从第一通信制式的小区进入该基站下的小区时，基站广播第二区域标识，第二区域标识是第二通信制式中用于对终端进行位置管理的区域标识，终端向第二通信制式的核心网发起区域更新；当终端从第二通信制式的小区进入基站下的小区时，基站广播第二区域标识，但第二区域标识不在终端当前的区域列表时，终端向第二通信制式的核心网发起区域更新。
第一通信制式可以是4G，第二通信制式可以是5G。
在一种可能的设计中，该方法还包括：终端向基站发送第一指示信元，第一指示信元用于指示终端发起的区域更新是向第二通信制式的核心网发起的。
在一种可能的设计中，该方法还包括：终端向第二通信制式的核心网发起区域更新之前，终端向基站发送终端的能力信息，如果该能力信息表示终端支持第二通信制式，则终端不需要向基站发送第一指示信元。
在一种可能的设计中，当终端从第二通信制式的小区进入基站下的小区时，该方法还包括：终端向第一通信制式的核心网发起区域更新。
在一种可能的设计中，该方法还包括：终端向基站发送第二指示信元，第二指示信元用于指示终端发起的区域更新是向第一通信制式的核心网发起的。
在一种可能的设计中，第一区域标识和第二区域标识格式不同。
在一种可能的设计中，第一区域标识为跟踪区域码TAC，第二区域标识为寻呼区域码PAC。
在一种可能的设计中，第一区域标识和第二区域标识格式相同，且该方法还包括：
终端接收第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，
终端接收指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，
终端接收指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
第二方面，本申请提供一种通信方法，包括：在支持第一通信制式和第二通信制式的通信系统中包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，基站广播第一区域标识和第二区域标识，第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；当终端从第一通信制式的小区进入基站下的小区，或者，终端从第二通信制式的小区进入基站下的小区且第二区域标识不属于终端当前的区域列表时，基站接收终端发送的第一区域更新请求；基站向第二通信制式的核心网发送第一区域更新请求。
在一种可能的设计中，该方法还包括：
基站接收终端发送的第一指示信元，第一指示信元用于指示终端发起的区域更新是向第二通信制式的核心网发起的；且基站向第二通信制式的核心网发送第一区域更新请求，包括：
基站根据第一指示信元向第二通信制式的核心网发送第一区域更新请求。
在一种可能的设计中，当终端从第二通信制式的小区进入基站下的小区时，该方法还包括：
基站接收终端向第一通信制式的核心网发起的第二区域更新请求；
基站向第一通信制式的核心网发送第二区域更新请求。
在一种可能的设计中，该方法还包括：基站接收终端发送的第二指示信元，第二指示信元用于指示终端发起的区域更新是向第一通信制式的核心网发起的，且基站向第一通信制式的核心网发送第二区域更新请求，包括：
基站根据第二指示信元向第一通信制式的核心网发送第二区域更新请求。
在一种可能的设计中，第一区域标识和第二区域标识格式不同。
在一种可能的设计中，第一区域标识为跟踪区域码TAC，第二区域标识为寻呼区域码PAC。
在一种可能的设计中，第一区域标识和第二区域标识格式相同，且该方法还包括：
基站向终端发送第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，
基站向终端发送指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，
基站向终端发送指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
第三方面，本申请提供一种通信设备，用于支持第一通信制式和第二通信制式的通信系统中，该通信系统还包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，基站广播的信息包括第一区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，其特征在于，终端支持第一通信制式和第二通信制式，该设备位于终端，且包括：
接收单元，用于接收基站广播的信息；
处理单元，用于当终端从第一通信制式的小区进入基站下的小区，基站广播的信息包括第二区域标识时，向第二通信制式的核心网发起区域更新，其中，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；或者，
用于当终端从第二通信制式的小区进入基站下的小区，基站广播的信息包括第二区域标识且第二区域标识不属于终端当前的区域列表时，向第二通信制式的核心网发起区域更新，其中，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域。
在一种可能的设计中，处理单元还用于向基站发送第一指示信元，第一指示信元用于指示处理单元发起的区域更新是向第二通信制式的核心网发起的。
在一种可能的设计中，当终端从第二通信制式的小区进入基站下的小区时，处理单元还用于向第一通信制式的核心网发起区域更新。
在一种可能的设计中，处理单元还用于向基站发送第二指示信元，第二指示信元用于指示处理单元发起的区域更新是向第一通信制式的核心网发起的。
在一种可能的设计中，第一区域标识和第二区域标识格式不同。
在一种可能的设计中，第一区域标识和第二区域标识格式相同，且处理单元还用于：
接收第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，
接收指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，
接收指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
第四方面，本申请提供一种通信设备，用于支持第一通信制式和第二通信制式的通信系统中，该通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，该设备位于该基站，且包括：
第一发送单元，用于广播第一区域标识和第二区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；
接收单元，用于当终端从第一通信制式的小区进入基站下的小区，或者，终端从第二通信制式的小区进入基站下的小区且第二区域标识不属于终端当前的区域列表时，接收终端发送的第一区域更新请求；
第二发送单元，用于向第二通信制式的核心网发送第一区域更新请求。
在一种可能的设计中，接收单元还用于接收终端发送的第一指示信元，第一指示信元用于指示终端发起的区域更新是向第二通信制式的核心网发起的，且第二发送单元用于根据第一指示信元向第二通信制式的核心网发送第一区域更新请求。
在一种可能的设计中，接收单元还用于当终端从第二通信制式的小区进入基站下的小区时，接收终端向第一通信制式的核心网发起的第二区域更新请求，且第二发送单元还用于向第一通信制式的核心网发送第二区域更新请求。
在一种可能的设计中，接收单元还用于接收终端发送的第二指示信元，第二指示信元用于指示终端发起的区域更新是向第一通信制式的核心网发起的，且第二发送单元用于根据第二指示信元向第一通信制式的核心网发送第二区域更新请求。
在一种可能的设计中，第一区域标识和第二区域标识格式不同。
在一种可能的设计中，第一区域标识和第二区域标识格式相同，且第一发送单元还用于：
向终端发送第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，
向终端发送指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，
向终端发送指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
第五方面，本申请提供一种计算机程序，该程序在被处理器执行时用于执行以上第一方面的方法。
第六方面，本申请提供一种计算机程序，该程序在被处理器执行时用于执行以上第二方面的方法。
第七方面，提供一种程序产品，例如计算机可读存储介质，包括第五方面的程序。
第八方面，提供一种程序产品，例如计算机可读存储介质，包括第六方面的程序。
可见，在以上各个方面，通过支持与第一通信制式的核心网和第二通信制式的核心网连接的基站广播针对这两种通信制式广播第一区域标识和第二区域标识，使得支持这两种通信制式的终端在进入该基站下的小区时，可以接收到两个区域标识，并根据第二区域标识进行区域更新以及时接入第二通信制式的通信系统或者及时进行区域更新，降低终端寻呼失败的概率，提高了终端的通信可靠性。
附图说明
图1为本申请实施例提供的一种场景示意图；
图2为本申请实施例提供的一种场景示意图；
图3为本申请实施例提供的再一种场景示意图；
图4为本申请实施例提供的通信方法的信令图；
图5为本申请实施例提供的又一种场景示意图；
图6为本申请实施例提供的又一种场景示意图；
图7为本申请实施例提供的又一种通信方法的信令图；
图8为本申请实施例提供的又一种通信方法的信令图；
图9为本申请实施例提供的又一种场景示意图；
图10为本申请实施例提供的一种终端的结构示意图；
图11为本申请实施例提供的一种基站的结构示意图；
图12为本申请实施例提供的另一种终端的结构示意图；
图13为本申请实施例提供的另一种基站的结构示意图。
具体实施方式
本申请实施例应用于支持两种不同通信制式的通信系统，不同通信制式的通信系统是指采用不同无线接入技术(radio access technology，RAT)的通信系统，两种不同通信制式用第一通 信制式和第二通信制式加以区分。第一通信制式采用第一RAT，例如第一RAT为长期演进(Long Term Evolution，LTE)，即第一通信制式为4G；第二通信制式采用第二RAT，例如第二RAT为新一代无线接入技术(New Radio Access Technology，NR)，即第二通信制式为5G。4G通信系统和5G通信系统包括基站和核心网。以下对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)终端，又称之为用户设备(User Equipment，UE)，是一种向用户提供语音和/或数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。常见的终端例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
2)基站，又称为无线接入网(Radio Access Network，RAN)设备是一种将终端接入到无线网络的设备，其包括各种通信制式中的基站，例如包括但不限于：传输接收点(Transmission Reception Point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)。此外，还可以包括Wifi接入点(Access Point，AP)等。
在本实施例中，不同通信制式的通信系统中的基站不同。为了区别起见，将4G通信系统的基站称为LTE eNB，5G通信系统的基站称为NR gNB，既支持4G通信系统又支持5G通信系统的基站称为eLTE eNB,这些名称仅为了方便区别，并不具有限制意义。
3)“多个”是指两个或两个以上，其它量词与之类似。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
请参考图1，其为本申请实施例提供的一种通信场景的示意图。如图1所示，5G通信系统包括下一代核心网(Next Generation Core，NGC)和连接NGC的无线接入网(Radio Access Network，RAN)，连接NGC的RAN包括NR gNB 11和eNB 12。4G通信系统包括演进分组核心网(Evolved Packet Core，EPC)和连接EPC的RAN，连接EPC的RAN包括eNB 13和eNB 12，其中，eNB 13支持与EPC连接，不支持与NGC连接，eNB 12同时支持与EPC和NGC连接，在本实施例中，为了区分eNB 13和eNB 12，可将eNB 13称为LTE eNB，将eNB 12称为eLTE eNB。在通信组网时，可以对LTE eNB进行升级得到eLTE eNB，使得eLTE eNB能够连接NGC。
如图1所示，110表示NR gNB 11下的小区，120表示eNB 12下的小区，130表示eNB13下的小区。为了对终端进行位置管理，引入了区域的概念，例如在LTE系统中的跟踪区域(Tracking Area，TA)。eNB 12广播其下小区所在的跟踪区域的跟踪区域码(Tracking Area Code，TAC)和公共陆地移动网络标识(Public Land Mobile Network Identity，PLMN ID)，TAC与PLMN ID组成跟踪区域标识(Tracking Area Identity，TAI)。TAC(或TAI)用于标识通信系统中用于对终端进行位置管理的区域。目前，LTE系统中的跟踪区域更新(Tracking Area Update,TAU)机制为：终端在空闲态进行移动，若终端当前进入的小区的跟踪区标识(Tracking Area Identity，TAI)在终端的TAI列表中，则终端不触发TAU，若终端当前进入的小区的TAI不在终端的TAI列表中，则终端触发TAU。
小区120所在TA的TAI可沿用4G通信系统中的TAI，从而不影响现有4G通信系统的TA规 划。采用现有的TAU机制，当终端移动到小区120时，常常会因为小区110和小区120规划在相同的TA或者相同的TA列表中或者小区120和小区130规划在相同的TA或者相同的TA列表中而不发起TAU，导致终端的通信可靠性不足。
例如，终端14同时支持4G通信系统和5G通信系统，当终端14在空闲态从小区130移动到小区120，由于小区130和小区120规划在相同的TA中，因此，终端14不会发起TAU，此时终端14不会接入NGC，无法获得5G网络的服务。再如，假设终端14在NGC下注册，NGC为终端14配置的TAI列表同时包括eLTE eNB下小区所在TA的TAI和NR gNB下小区所在TA的TAI，例如，NGC为终端14配置的TAI列表包括eNB 12下的小区120所在TA的TAI1和NR gNB 11下小区110所在TA的TAI2。基于LTE系统中的TAU机制，当终端14在空闲态从小区110移动到小区120时，终端14接收到eNB 12广播的小区120的TAI1，由于小区120的TAI1在终端14的TAI列表中，所以终端14不触发TAU。当终端14继续移动，从小区120移动到小区130时，终端14接收到eNB13广播的小区130的TAI，由于小区120沿用LTE系统中的TAI划分规则，则小区120的TAI可能会与小区130的TAI一致，若小区130的TAI同样为TAI1，由于小区130的TAI 1同样在终端14的TAI列表中，则终端14不触发TAU。当终端14停留在小区130，且NGC有下行业务要发送给终端14时，由于eNB 13不与NGC连接，则NGC将无法寻呼到终端14。
可见，现有的TA规划机制存在通信可靠性不足的问题。为解决该问题，本申请实施例中在支持两种通信制式的基站上规划了两种TA，并广播这两种TA的两个区域标识，具体提供了如下几种实施例，下面结合具体场景对实施例进行说明：
图2为本申请实施例提供的一种场景示意图，图3为本申请实施例提供的再一种场景示意图，图4为本申请实施例提供的通信方法的信令图，图5为本申请实施例提供的又一种场景示意图，在本实施例中，4G通信系统中小区的区域标识和5G通信系统中小区的区域标识采用相同的划分规则，在其他实施例中，4G通信系统中小区的区域标识和5G通信系统中小区的区域标识还可以采用不同的划分规则。
如图2所示，可为eLTE eNB下的小区分配两个不同的TAI，例如，给eNB 12下的小区120分配的两个不同的TAI，分别是TAI1和TAI2，其中一个用于4G通信系统，一个用于5G通信系统，以TAI1用于4G通信系统、TAI2用于5G通信系统为例，TAI1用于标识4G通信系统中用于对终端进行位置管理的区域，TAI2用于标识5G通信系统中用于对终端进行位置管理的区域，终端14进入eNB 12下的小区120时，终端14接收eNB 12广播的信息，eNB 12广播的信息中可以同时包括TAI1和TAI2，终端14进入eNB 12下的小区120有如下两种情况：
第一种：
如图3所示，终端14从eNB 13下的小区130进入eNB 12下的小区120，且在终端14从eNB 13下的小区130进入eNB 12下的小区120之前，终端14中存储的TAI列表是EPC分配的，EPC分配的TAI列表不包括5G通信系统中的小区的TAI，当终端14从eNB 13下的小区130进入eNB 12下的小区120后，终端14接收eNB 12广播的信息，eNB 12广播的信息包括TAI1和TAI2，终端14可同时接收TAI1和TAI2，也可以分时接收TAI1和TAI2。
若终端14同时支持4G通信系统和5G通信系统，则终端14从eNB 13下的小区130进入eNB 12下的小区120时，只要eNB 12连接NGC，终端14即向NGC发起TAU，即当终端14从eNB 13下的小区130进入eNB 12下的小区120时，不论eNB 12广播的4G通信系统的TAI例如TAI1是否在终端的TAI列表中，只要eNB 12广播的信息包括5G通信系统的TAI，终端14即向5G通信 系统的核心网NGC发起TAU。
由于eNB 12同时连接EPC和NGC，eNB 12对终端14发起的TAU只做转发、不做解析，因此，终端14在发起TAU时，还需要向eNB 12发送第一指示信元，该第一指示信元用于指示终端14发起的TAU是向NGC发起的。
该第一指示信元可以和TAU一起发送给eNB 12，例如第一指示信元和TAU消息在同一条无线资源控制(Radio Resource Control，RRC)消息中发给eNB 12；该第一指示信元和TAU还可以分开发送给eNB 12，例如终端14通过在RRC消息中携带该第一指示信元，并将RRC消息发送给eNB 12，另外，终端14通过非接入层(Non-Access Stratum，NAS)消息向NGC发送TAU。相应的，如图4所示，终端、eLTE eNB、NGC之间的信令交互包括如下S41-S44：
S41、eLTE eNB向终端广播适用于4G通信系统的TAI1和适用于5G通信系统的TAI2。
S42、终端向eLTE eNB发送第一指示信元和TAU。
其中，第一指示信元用于指示终端发起的TAU是向NGC发起的，且TAU包括TAI2。
S43、eLTE eNB根据第一指示信元将TAU发送给NGC。
S44、NGC通过eLTE eNB向终端发送TAI列表1。
另外，需要说明的是，eNB 12之所以广播TAI 1，是为了兼容只支持4G通信系统的终端，例如，终端14是一个只支持4G通信系统的终端，小区130和小区120均是4G通信系统中的小区，两个小区的TAI可能相同，可能不同，当终端14从小区130移动到小区120之前，终端14的TAI列表是EPC分配的，当终端14从小区130移动到小区120后，终端14需要检测eNB 12广播的TAI1是否在终端14的TAI列表中，若eNB 12广播的TAI1在终端14的TAI列表中，则终端14不触发TAU，若eNB 12广播的TAI1不在终端14的TAI列表中，则终端14需要向EPC发起TAU。
第二种：
如图5所示，终端14从NR gNB 11下的小区110进入eNB 12下的小区120，且在终端14从NR gNB 11下的小区110进入eNB 12下的小区120之前，终端14中存储的TAI列表是NGC分配的，NGC分配的TAI列表不包括TAI1，终端14从NR gNB 11下的小区110进入eNB 12下的小区120后，检测eNB 12广播的5G通信系统的TAI例如TAI2是否在终端14的TAI列表中，若TAI2不在终端14的TAI列表中，则终端14向NGC发起TAU，若TAI2在终端14的TAI列表中，则终端14不向NGC发起TAU。
另外，在本实施例中，对于同时支持4G通信系统和5G通信系统的终端，当终端14从NR gNB11下的小区110进入eNB 12下的小区120时，终端14可以不检测eNB 12广播的4G通信系统的TAI1是否在终端14的TAI列表中，在其他实施例中，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，终端14还需检测eNB 12广播的4G通信系统的TAI1是否在终端14的TAI列表中。
如图5所示，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，终端14不检测eNB 12广播的4G通信系统的TAI1是否在终端14的TAI列表中，但是，当终端14继续移动，从小区120移动到小区130后，终端14将检测eNB 13广播的TAI是否在终端14的TAI列表中，例如，eNB 13广播的TAI是TAI1，TAI1不在终端14的TAI列表中，则终端14向EPC发起TAU。
本实施例，通过支持与第一通信制式的核心网和第二通信制式的核心网连接的基站广播针对这两种通信制式广播第一区域标识和第二区域标识，使得支持这两种通信制式的终端在进入该基站下的小区时，可以接收到两个区域标识，并根据第二区域标识进行区域更新以及时接入第二通 信制式的通信系统或者及时进行区域更新，降低终端寻呼失败的概率，提高了终端的通信可靠性。
另外，作为图4所示实施例的替代方案，终端通过eLTE eNB向NGC发起TAU之前，eLTE eNB获取终端的能力信息，若该能力信息表示终端支持5G通信系统，或者，该终端同时支持4G和5G通信系统，则当终端通过eLTE eNB向NGC发起TAU时，终端不需要向eLTE eNB发送指示信息，直接将TAU发送给eLTE eNB，eLTE eNB根据终端的能力信息，直接将TAU发送给NGC。若该能力信息表示终端只支持4G通信系统，则当该终端发起TAU时，eLTE eNB直接将该TAU发送给EPC。
图6为本申请实施例提供的又一种场景示意图，图7为本申请实施例提供的又一种通信方法的信令图。如图6所示，NR gNB 11广播的信息包括TAI3，eNB 12广播的信息包括TAI1和TAI2，TAI1用于4G通信系统，TAI2用于5G通信系统，eNB 13广播的信息包括TAI1，终端14同时支持4G和5G通信系统，终端14注册在NGC，NGC为终端14分配的TAI列表包括TAI3，终端14在空闲状态从NR gNB 11下的小区110进入eNB 12下的小区120时，由于eNB 12广播的用于5G通信系统的TAI2不在终端14的TAI列表中，因此，终端14向NGC发起TAU，NGC给终端14返回TAI列表1，TAI列表1中包括TAI2，终端14将其存储的原TAI列表更新为TAI列表1。若终端14继续移动，从eNB 12下的小区120移动到eNB 13下的小区130，由于eNB 13广播的TAI1不在终端14的当前TAI列表1中，eNB 13是4G通信系统的基站，小区130是LTE覆盖的小区，eNB 13不与NGC连接，则终端14向EPC发起TAU，EPC给终端14返回TAI列表2，TAI列表2中包括TAI1，终端14将其存储的TAI列表1更新为TAI列表2。
另外，终端14向NGC发起的TAU的格式和终端14向EPC发起的TAU的格式不同，例如，终端14向NGC发起5G NAS格式的TAU，终端14向EPC发起EPC NAS格式的TAU。
如图6所示，终端14在空闲态进行移动时，在发起TAU时，TAU的格式可根据终端14所处小区的支持能力确定，如果终端14所处的小区支持NGC连接，则优先发起5G NAS格式的TAU，如果终端14所处的小区只支持EPC连接，则发起EPC NAS格式的TAU。
此外，如图6所示，终端14同时支持4G和5G通信系统，当终端14从eNB 12下的小区120移动到eNB 13下的小区130时，由于eNB 13广播的TAI1不在终端14的当前TAI列表1中，eNB13是4G通信系统的基站，小区130是LTE覆盖的小区，eNB 13不与NGC连接，则终端14向EPC发起EPC NAS格式的TAU。当终端14从eNB 13下的小区130进入eNB 12下的小区120时，不论eNB 12广播的4G通信系统的TAI1是否在终端的TAI列表中，只要eNB 12连接NGC，终端14即向5G通信系统的核心网NGC发送5G NAS格式的TAU。若终端14在eNB 12下的小区120和eNB 13下的小区130来回移动时，每一次小区重选，终端14均需要向不同的核心网发送不同格式的TAU，即频繁的向NGC发送5G NAS格式的TAU、频繁的向EPC发送EPC NAS格式的TAU，出现所谓的乒乓现象。
为解决上述问题，在图6所示实施例的基础上，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，终端14向EPC发起TAU。此外，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，终端14是否向NGC发起TAU，取决于eNB 12广播的用于5G通信系统的TAI是否在终端14当前的TAI列表中，原理与图5所示实施例一致，此处不再赘述。
在本实施例中，假定终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，eNB 12广播的用于5G通信系统的TAI在NGC给终端14配置的TAI列表中，则终端14不需要向NGC发起 TAU，但是依然需要向EPC发起TAU，EPC向终端14返回TAI列表，在本实施例中，当终端14在eNB 12下的小区120接收到EPC发送的TAI列表时，终端14保留原有的TAI列表即NGC给终端14配置的TAI列表，同时再存储EPC发送的TAI列表。
由于eNB 12同时连接EPC和NGC，eNB 12对终端14发起的TAU只做转发、不做解析，因此，终端14在发起TAU时，还需要向eNB 12发送第二指示信元，该第二指示信元用于指示终端14发起的TAU是向EPC发起的。相应的，如图7所示，终端、eLTE eNB、EPC之间的信令交互包括如下S71-S74：
S71、eLTE eNB向终端广播适用于4G通信系统的TAI1和适用于5G通信系统的TAI2。
S72、终端向eLTE eNB发送第二指示信元和TAU。
其中，第二指示信元用于指示终端发起的TAU是向EPC发起的，终端向eLTE eNB发送的消息还包括包括TAI1。
S73、eLTE eNB根据第二指示信元将TAU发送给EPC。
S74、EPC通过eLTE eNB向终端发送TAI列表2。
其中，TAI列表2包括TAI1。
在本实施例中，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，终端14向EPC发起TAU，可以是终端14每次从NR gNB 11下的小区110进入eLTE eNB 12下的小区120时，终端14发起的，也可以是终端14判断出发生了乒乓现象后发起的，还可以是核心网发现网络中出现了乒乓现象后指示终端14发起的。
本实施例，终端从5G通信系统的小区进入eLTE eNB下的小区时，终端通过eLTE eNB向4G核心网发起TAU，4G核心网向终端发送TAI列表，当终端从eLTE eNB下的小区进入eLTE eNB下的小区时，由于终端已存储有4G核心网配置的TAI列表，该TAI列表可包括eLTE eNB下的小区的TAI，以及eLTE eNB下小区周围的LTE eNB下小区的TAI，当终端在eLTE eNB下小区和LTE eNB下小区来回移动时，由于eLTE eNB下的小区的TAI和该LTE eNB下小区的TAI都在终端的TAI列表中，则每一次小区重选，终端都不需要向不同的核心网发送不同格式的TAU，避免了终端频繁的向NGC发送5G NAS格式的TAU、频繁的向EPC发送EPC NAS格式的TAU，从而避免了所谓的乒乓现象。
图8为本申请实施例提供的又一种通信方法的信令图。在图6所示实施例的基础上，若终端14同时支持4G和5G通信系统，当终端14从NR gNB 11下的小区110进入eNB 12下的小区120时，或者，从eNB 13下的小区130进入eNB 12下的小区120时，终端14可同时向EPC发起EPC NAS格式的TAU、向NGC发起5G NAS格式的TAU，由于eNB 12同时连接EPC和NGC，eNB 12对终端14发起的TAU只做转发、不做解析，因此，终端14同时发起EPC NAS格式的TAU和5G NAS格式的TAU时，还需要同时向eNB 12发送第一指示信元和第二指示信元，第一指示信元用于指示终端发起的5G NAS格式的TAU记为TAU1是向NGC发起的，第二指示信元用于指示终端发起的EPC NAS格式的TAU记为TAU2是向EPC发起的。相应的，如图8所示，终端、eLTE eNB、EPC、NGC之间的信令交互包括如下S81-S86：
S81、eLTE eNB向终端广播适用于4G通信系统的TAI1和适用于5G通信系统的TAI2。
S82、终端向eLTE eNB发送第一指示信元和TAU1，以及第二指示信元和TAU2。
第一指示信元用于指示终端发起的TAU1是向NGC发起的，第二指示信元用于指示终端发起的 TAU2是向EPC发起的，TAU1包括TAI2，TAU2包括TAI1。
S83、eLTE eNB将TAU1发送给NGC。
S84、eLTE eNB将TAU2发送给EPC。
S85、NGC通过eLTE eNB向终端发送TAI列表1。
S86、EPC通过eLTE eNB向终端发送TAI列表2。
如果TAI列表1包括TAI2和TAI3，TAI列表2包括TAI1，终端接收到TAI列表1和TAI列表2后，可将TAI列表1和TAI列表2构成一个总的TAI列表，该TAI列表包括TAI列表1中的TAI，以及TAI列表2中的TAI，相比于TAI列表1或TAI列表2，该TAI列表是一个更大集合的TAI列表。
由于NR gNB 11广播的TAI3在更大集合的TAI列表中，eNB 12广播的5G通信系统的TAI2也在更大集合的TAI列表中，因此，当终端14在小区110和小区120之间来回移动时，终端14不需频繁发起TAU。同理，由于eNB 12广播的4G通信系统的TAI1在更大集合的TAI列表中，eNB 13广播的TAI1也在更大集合的TAI列表中，因此，当终端14在小区120和小区130之间来回移动时，终端14也不需频繁发起TAU，即TAI列表1和TAI列表2构成了一个更大集合的TAI列表，使得终端14在更大集合的TAI列表对应的小区之间移动时均不会发起TAU，避免终端14对应的核心网发生变化时，终端14需要向不同的核心网频繁的发起不同格式的TAU。
在本实施例中，终端14同时向EPC发起EPC NAS格式的TAU、向NGC发起5G NAS格式的TAU的方式，可以是终端14每次进入eLTE eNB下的小区时，终端14发起的，也可以是终端14判断出发生了乒乓现象后发起的，还可以是核心网发现网络中出现了乒乓现象后指示终端14发起的。
本实施例，终端移动到eLTE eNB下的小区时，同时向4G核心网和5G核心网分别发起不同格式的区域更新，4G核心网和5G核心网分别给终端分配不同的TAI列表，两个TAI列表构成了一个更大集合的TAI列表，使得终端在更大集合的TAI列表对应的小区之间移动时均不会发起TAU，避免终端对应的核心网发生变化时，终端频繁的发起TAU，节省了空口资源。
图9为本申请实施例提供的又一种场景示意图。作为图2所示实施例的一种替代方案，eNB 12广播的信息中可包括两个不同格式的区域标识，例如第一区域标识和第二区域标识，第一区域标识可以是跟踪区域码(Tracking Area Code,TAC)，第二区域标识可以是寻呼区域码(Paging Area Code,PAC),由于TAI包括公共陆地移动网络标识(Public Land Mobile Network Identity，PLMN ID)和TAC，寻呼区域标识(Paging Area Identity，PAI)包括PLMN ID和PAC，TAC和PAC的格式不同，例如长度不同。如图9所示，对于终端14而言，若终端14的运营商是固定的，则PLMN ID是固定的，由于TAC和PAC的格式不同，则TAI和PAI的格式也不同，因此，如图9所示，TAI1用于标识4G通信系统中用于对终端进行位置管理的区域，PAI 1用于标识5G通信系统中用于对终端进行位置管理的区域。当终端14进入eNB 12下的小区时，eNB 12广播TAI1和PAI1，当终端14接收到TAI1和PAI1时，终端14根据TAI1和PAI1的格式不同，即可判断出PAI1用于5G通信系统，TAI1用于4G通信系统。或者，当终端14进入eNB 12下的小区时，eNB 12广播TAC1和PAC1，当终端14接收到TAC1和PAC1时，终端14根据TAC1和PAC1的格式不同，即可判断出PAC1用于5G通信系统，TAC1用于4G通信系统。
本实施例，通过eLTE eNB广播不同格式的第一区域标识和第二区域标识，使得eLTE eNB下小区内的终端可以根据第一区域标识和第二区域标识的不同形式，即可快速判断出用于5G通信系 统的区域标识和用于4G通信系统的区域标识。
另外，在图2所示实施例的基础上，eNB 12广播的信息中可包括两个相同格式的区域标识，例如第一区域标识和第二区域标识，第一区域标识为TAC1，第二区域标识为TAC2，由于TAI包括PLMN ID和TAC，若终端14的运营商是固定的，则PLMN ID是固定的，若TAC1和TAC2不同，则TAI1和TAI2不同。若终端14同时支持4G和5G,则eNB 12还需向终端14发送第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识即TAC1用于4G，第二指示信息用于指示第二区域标识用于5G；或者，eNB 12向终端14发送一个指示信息，该指示信息用于指示第一区域标识即TAC1用于4G，第二区域标识即TAC2默认用于5G；再或者，eNB 12向终端14发送一个指示信息，该指示信息用于指示第二区域标识即TAC2用于5G，第一区域标识即TAC1默认用于4G。若终端14只支持4G，则eNB 12只需向终端14发送一个指示信息即可，该指示信息用于指示第一区域标识即TAC1用于4G，或者，该指示信息用于指示第二区域标识即TAC2用于5G。
本实施例，通过eLTE eNB发送第一指示信息和第二指示信息，分别标识eLTE eNB广播的第一区域标识和第二区域标识中，用于5G通信系统的区域标识和用于4G通信系统的区域标识，使得终端可准确区分出eLTE eNB广播的格式相同的第一区域标识和第二区域标识；另外，通过eLTE eNB发送一个指示信息，标识eLTE eNB广播的第一区域标识和第二区域标识中，用于5G通信系统的区域标识或用于4G通信系统的区域标识，使得终端可准确区分出eLTE eNB广播的格式相同的第一区域标识和第二区域标识中的一个，另一个可默认识别，从而有效减少了eLTE eNB发送的数据量。
图10为本申请实施例提供的一种通信设备的结构示意图。该通信设备用于支持第一通信制式和第二通信制式的通信系统中，第一通信制式可以是4G，第二通信制式可以是5G，该通信系统还包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，基站广播的信息包括第一区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，该终端支持第一通信制式和第二通信制式，如图10所示，该通信设备位于终端，且包括：接收单元101和处理单元102，。其中，接收单元101用于接收该基站广播的信息；处理单元102用于当该终端从第一通信制式的小区进入该基站下的小区，基站广播的信息包括第二区域标识时，向第二通信制式的核心网发起区域更新，其中，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；或者，处理单元102用于当该终端从第二通信制式的小区进入该基站下的小区，基站广播的信息包括第二区域标识且第二区域标识不属于终端当前的区域列表时，向第二通信制式的核心网发起区域更新，其中，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域。
在图10中，进一步地，处理单元102还用于向该基站发送第一指示信元，第一指示信元用于指示处理单元102发起的区域更新是向第二通信制式的核心网发起的。
在上述实施例中，当该终端从第二通信制式的小区进入该基站下的小区时，处理单元102还用于向第一通信制式的核心网发起区域更新。
在上述实施例中，处理单元102还用于向该基站发送第二指示信元，第二指示信元用于指示处理单元102发起的区域更新是向第一通信制式的核心网发起的。
在上述实施例中，第一区域标识和第二区域标识格式不同。
在上述实施例中，第一区域标识和第二区域标识格式相同，且接收单元101还用于：接收第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，接收指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，接收指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
图10所示实施例的通信设备可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图11为本申请实施例提供的一种通信设备的结构示意图。该通信设备用于支持第一通信制式和第二通信制式的通信系统中，第一通信制式可以是4G，第二通信制式可以是5G，该通信系统还包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，如图11所示，该通信设备位于该基站，且包括：第一发送单元111、接收单元112和第二发送单元113，第一发送单元111用于广播第一区域标识和第二区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；接收单元112用于当终端从第一通信制式的小区进入基站下的小区，或者，终端从第二通信制式的小区进入基站下的小区且第二区域标识不属于终端当前的区域列表时，接收终端发送的第一区域更新请求；第二发送单元113用于向第二通信制式的核心网发送第一区域更新请求。
在图11中，进一步地，接收单元112还用于接收终端发送的第一指示信元，第一指示信元用于指示终端发起的区域更新是向第二通信制式的核心网发起的，且第二发送单元113用于根据第一指示信元向第二通信制式的核心网发送第一区域更新请求。
在上述实施例中，接收单元112还用于当终端从第二通信制式的小区进入基站下的小区时，接收终端向第一通信制式的核心网发起的第二区域更新请求，且第二发送单元113还用于向第一通信制式的核心网发送第二区域更新请求。
在上述实施例中，接收单元112还用于接收终端发送的第二指示信元，第二指示信元用于指示终端发起的区域更新是向第一通信制式的核心网发起的，且第二发送单元113用于根据第二指示信元向第一通信制式的核心网发送第二区域更新请求。
在上述实施例中，第一区域标识和第二区域标识格式不同。
在上述实施例中，第一区域标识和第二区域标识格式相同，且第一发送单元111还用于：向终端发送第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，向终端发送指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，向终端发送指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
图11所示实施例的通信设备可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
应理解以上终端或基站的各个单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些单元可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分单元通过软件通过处理元件调用的形式实现，部分单元通过硬件的形式实现。例如，接收单元可以为单独设立的处理元件，也可以集 成在例如基站或终端的某一个芯片中实现，此外，也可以以程序的形式存储于基站或终端的存储器中，由基站或终端的某一个处理元件调用并执行以上各个单元的功能。其它单元的实现与之类似。此外这些单元全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。此外，以上接收单元是一种控制接收的单元，可以通过终端或基站的接收装置，例如天线和射频装置接收基站发送的信息。以上第一发送单元是一种控制发送的单元，可以通过基站的发送装置，例如天线和射频装置向终端发送信息。第二发送单元是一种控制发送的单元，可以通过基站与核心网设备的接口向核心网发送信息。
例如，以上这些单元可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。再如，当以上某个单元通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序的处理器。再如，这些单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
图12为本申请实施例提供的另一种终端的结构示意图。如图12所示，终端包括接收器121、发送器122、处理器123、存储器124，该终端在支持第一通信制式和第二通信制式的通信系统中，第一通信制式可以是4G，第二通信制式可以是5G，该通信系统还包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，基站广播的信息包括第一区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，该终端支持第一通信制式和第二通信制式。其中，接收器121用于接收该基站广播的信息；处理器123用于当该终端从第一通信制式的小区进入该基站下的小区，基站广播的信息包括第二区域标识时，向第二通信制式的核心网发起区域更新，其中，二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；或者，处理器123用于当该终端从第二通信制式的小区进入该基站下的小区，基站广播的信息包括第二区域标识且第二区域标识不属于终端当前的区域列表时，向第二通信制式的核心网发起区域更新，其中，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域。
在图12中，进一步地，处理器123还用于向该基站发送第一指示信元，第一指示信元用于指示处理器123发起的区域更新是向第二通信制式的核心网发起的。
在上述实施例中，当该终端从第二通信制式的小区进入该基站下的小区时，处理器123还用于向第一通信制式的核心网发起区域更新。
在上述实施例中，处理器123还用于向该基站发送第二指示信元，第二指示信元用于指示处理器123发起的区域更新是向第一通信制式的核心网发起的。
在上述实施例中，第一区域标识和第二区域标识格式不同。
在上述实施例中，第一区域标识和第二区域标识格式相同，且接收器121还用于：接收第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，接收指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，接收指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
图12所示实施例的终端可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
接收器121、发送器122可以与天线连接。在下行方向上，接收器121、发送器122通过天线接收基站发送的信息，并将信息发送给处理器123进行处理。在上行方向上，处理器123对终端的数据进行处理，并通过发送器122发送给基站。
该存储器124用于存储实现以上方法实施例，或者图10所示实施例各个单元的程序，处理器123调用该程序，执行以上方法实施例的操作，以实现图10所示的各个单元。
或者，以上各个单元的部分或全部也可以通过集成电路的形式内嵌于该终端的某一个芯片上来实现。且它们可以单独实现，也可以集成在一起。即以上这些单元可以被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。
图13为本申请实施例提供的另一种基站的结构示意图。如图13所示，该基站包括发送器131、接收器132和处理器133，该基站支持与第一通信制式的核心网和第二通信制式的核心网连接，第一通信制式可以是4G，第二通信制式可以是5G，发送器131用于广播第一区域标识和第二区域标识，其中第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；接收器132用于当终端从第一通信制式的小区进入基站下的小区，或者，终端从第二通信制式的小区进入基站下的小区且第二区域标识不属于终端当前的区域列表时，接收终端发送的第一区域更新请求；发送器131还用于向第二通信制式的核心网发送第一区域更新请求。
在图13中，进一步地，接收器132还用于接收终端发送的第一指示信元，第一指示信元用于指示终端发起的区域更新是向第二通信制式的核心网发起的，且发送器131用于第一指示信元向第二通信制式的核心网发送第一区域更新请求。
在上述实施例中，接收器132还用于当终端从第二通信制式的小区进入基站下的小区时，接收终端向第一通信制式的核心网发起的第二区域更新请求，且发送器131还用于向第一通信制式的核心网发送第二区域更新请求。
在上述实施例中，接收器132还用于接收终端发送的第二指示信元，第二指示信元用于指示终端发起的区域更新是向第一通信制式的核心网发起的，且发送器131用于根据第二指示信元向第一通信制式的核心网发送第二区域更新请求。
在上述实施例中，第一区域标识和第二区域标识格式不同。
在上述实施例中，第一区域标识和第二区域标识格式相同，且发送器131还用于：向终端发送第一指示信息和第二指示信息，第一指示信息用于指示第一区域标识用于第一通信制式，第二指示信息用于指示第二区域标识用于第二通信制式；或者，向终端发送指示信息，指示信息用于指示第一区域标识用于第一通信制式，第二区域标识默认用于第二通信制式；或者，向终端发送指示信息，指示信息用于指示第二区域标识用于第二通信制式，第一区域标识默认用于第一通信制式。
图13所示实施例的基站可用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
其中，处理器133也可以为控制器，图13中表示为“控制器/处理器133”。发送器131和接收器132用于支持基站与上述实施例中的所述终端之间收发信息，以及支持所述终端与其他终端之间进行无线电通信。所述处理器133执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器132进行解调(例如将高频信号解调为基带信号)，并进一步由处理器133进行处理来恢复终端所发送的业务数据和信令信息。在下行链路上，业务数据和信令消息由处理器133进行处理，并由发送器131进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。
进一步的，基站还可以包括存储器134，存储器134用于存储基站的程序代码和数据。此外，基站还可以包括通信接口135。通信接口135用于支持基站与其他网络实体(例如核心网中的网络设备等)进行通信。例如，在LTE系统中，该通信接口135可以是S1-U接口，用于支持基站与SGW进行通信；或者，该通信接口135也可以是S1-MME接口，用于支持基站与MME进行通信。
处理器133例如中央处理器(Central Processing Unit，CPU)，还可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)等。
存储器134可以是一个存储器，也可以是多个存储元件的统称。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (26)

  1. 一种通信方法，用于支持第一通信制式和第二通信制式的通信系统中，所述通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，所述基站广播的信息包括第一区域标识，其中所述第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，所述方法包括：
    终端接收所述基站广播的信息；
    当所述终端从第一通信制式的小区进入所述基站下的小区时，所述终端在所述基站广播的信息包括第二区域标识时，向所述第二通信制式的核心网发起区域更新，其中，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；或者，
    当所述终端从第二通信制式的小区进入所述基站下的小区时，所述终端在所述基站广播的信息包括第二区域标识且所述第二区域标识不属于所述终端当前的区域列表时向所述第二通信制式的核心网发起区域更新，其中，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端向所述基站发送第一指示信元，所述第一指示信元用于指示所述终端发起的区域更新是向所述第二通信制式的核心网发起的。
  3. 根据权利要求1或2所述的方法，其特征在于，当所述终端从第二通信制式的小区进入所述基站下的小区时，所述方法还包括：
    所述终端向所述第一通信制式的核心网发起区域更新。
  4. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述终端向所述基站发送第二指示信元，所述第二指示信元用于指示所述终端发起的区域更新是向所述第一通信制式的核心网发起的。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述第一区域标识和所述第二区域标识格式不同。
  6. 根据权利要求1-4任一项所述的方法，其特征在于，所述第一区域标识和所述第二区域标识格式相同，且所述方法还包括：
    所述终端接收第一指示信息和第二指示信息，所述第一指示信息用于指示所述第一区域标识用于第一通信制式，所述第二指示信息用于指示所述第二区域标识用于第二通信制式；或者，
    所述终端接收指示信息，所述指示信息用于指示所述第一区域标识用于第一通信制式，所述第二区域标识默认用于第二通信制式；或者，
    所述终端接收指示信息，所述指示信息用于指示所述第二区域标识用于第二通信制式，所述第一区域标识默认用于第一通信制式。
  7. 一种通信方法，用于支持第一通信制式和第二通信制式的通信系统中，所述通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，所述方法包括：
    所述基站广播第一区域标识和第二区域标识，其中所述第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；
    当终端从第一通信制式的小区进入所述基站下的小区，或者，终端从第二通信制式的小区进入所述基站下的小区且所述第二区域标识不属于所述终端当前的区域列表时，所述基站接收所述 终端发送的第一区域更新请求；
    所述基站向所述第二通信制式的核心网发送所述第一区域更新请求。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述基站接收所述终端发送的第一指示信元，所述第一指示信元用于指示所述终端发起的区域更新是向所述第二通信制式的核心网发起的；且所述基站向所述第二通信制式的核心网发送所述第一区域更新请求，包括：
    所述基站根据所述第一指示信元向所述第二通信制式的核心网发送所述第一区域更新请求。
  9. 根据权利要求7所述的方法，其特征在于，当所述终端从第二通信制式的小区进入所述基站下的小区时，所述方法还包括：
    所述基站接收所述终端向所述第一通信制式的核心网发起的第二区域更新请求；
    所述基站向所述第一通信制式的核心网发送所述第二区域更新请求。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述基站接收所述终端发送的第二指示信元，所述第二指示信元用于指示所述终端发起的区域更新是向所述第一通信制式的核心网发起的；且所述基站向所述第一通信制式的核心网发送所述第二区域更新请求，包括：
    所述基站根据所述第二指示信元向所述第一通信制式的核心网发送所述第二区域更新请求。
  11. 根据权利要求7-10任一项所述的方法，其特征在于，所述第一区域标识和所述第二区域标识格式不同。
  12. 根据权利要求7-10任一项所述的方法，其特征在于，所述第一区域标识和所述第二区域标识格式相同，且所述方法还包括：
    所述基站向所述终端发送第一指示信息和第二指示信息，所述第一指示信息用于指示所述第一区域标识用于第一通信制式，所述第二指示信息用于指示所述第二区域标识用于第二通信制式；或者，
    所述基站向所述终端发送指示信息，所述指示信息用于指示所述第一区域标识用于第一通信制式，所述第二区域标识默认用于第二通信制式；或者，
    所述基站向所述终端发送指示信息，所述指示信息用于指示所述第二区域标识用于第二通信制式，所述第一区域标识默认用于第一通信制式。
  13. 一种通信设备，用于支持第一通信制式和第二通信制式的通信系统中，所述通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，所述基站广播的信息包括第一区域标识，其中所述第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，其特征在于，所述终端支持第一通信制式和第二通信制式，所述设备位于终端，且包括：
    接收单元，用于接收所述基站广播的信息；
    处理单元，用于当所述终端从第一通信制式的小区进入所述基站下的小区，所述基站广播的信息包括第二区域标识时，向所述第二通信制式的核心网发起区域更新，其中，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；或者，用于当所述终端从第二通信制式的小区进入所述基站下的小区，所述基站广播的信息包括第二区域标识且所述第二区域标识不属于所述终端当前的区域列表时，向所述第二通信制式的核心网发起区域更新，其中，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域。
  14. 根据权利要求13所述的设备，其特征在于，所述处理单元还用于向所述基站发送第一指 示信元，所述第一指示信元用于指示所述处理单元发起的区域更新是向所述第二通信制式的核心网发起的。
  15. 根据权利要求13或14所述的设备，其特征在于，当所述终端从第二通信制式的小区进入所述基站下的小区时，所述处理单元还用于向所述第一通信制式的核心网发起区域更新。
  16. 根据权利要求15所述的设备，其特征在于，所述处理单元还用于向所述基站发送第二指示信元，所述第二指示信元用于指示所述处理单元发起的区域更新是向所述第一通信制式的核心网发起的。
  17. 根据权利要求13-16任一项所述的设备，其特征在于，所述第一区域标识和所述第二区域标识格式不同。
  18. 根据权利要求13-16任一项所述的设备，其特征在于，所述第一区域标识和所述第二区域标识格式相同，且所述接收单元还用于：
    接收第一指示信息和第二指示信息，所述第一指示信息用于指示所述第一区域标识用于第一通信制式，所述第二指示信息用于指示所述第二区域标识用于第二通信制式；或者，
    接收指示信息，所述指示信息用于指示所述第一区域标识用于第一通信制式，所述第二区域标识默认用于第二通信制式；或者，
    接收指示信息，所述指示信息用于指示所述第二区域标识用于第二通信制式，所述第一区域标识默认用于第一通信制式。
  19. 一种通信设备，其特征在于，用于支持第一通信制式和第二通信制式的通信系统中，所述通信系统包括支持与第一通信制式的核心网和第二通信制式的核心网连接的基站，所述设备位于所述基站，且包括：
    第一发送单元，用于广播第一区域标识和第二区域标识，其中所述第一区域标识用于标识第一通信制式中用于对终端进行位置管理的区域，所述第二区域标识用于标识第二通信制式中用于对终端进行位置管理的区域；
    接收单元，用于当终端从第一通信制式的小区进入所述基站下的小区，或者，终端从第二通信制式的小区进入所述基站下的小区且所述第二区域标识不属于所述终端当前的区域列表时，接收所述终端发送的第一区域更新请求；
    第二发送单元，用于向所述第二通信制式的核心网发送所述第一区域更新请求。
  20. 根据权利要求19所述的设备，其特征在于，所述接收单元还用于接收所述终端发送的第一指示信元，所述第一指示信元用于指示所述终端发起的区域更新是向所述第二通信制式的核心网发起的，且所述第二发送单元用于根据所述第一指示信元向所述第二通信制式的核心网发送所述第一区域更新请求。
  21. 根据权利要求19所述的设备，其特征在于，所述接收单元还用于当所述终端从第二通信制式的小区进入所述基站下的小区时，接收所述终端向所述第一通信制式的核心网发起的第二区域更新请求，且所述第二发送单元还用于向所述第一通信制式的核心网发送所述第二区域更新请求。
  22. 根据权利要求21所述的设备，其特征在于，所述接收单元还用于接收所述终端发送的第二指示信元，所述第二指示信元用于指示所述终端发起的区域更新是向所述第一通信制式的核心网发起的，且所述第二发送单元用于根据所述第二指示信元向所述第一通信制式的核心网发送所述第二区域更新请求。
  23. 根据权利要求19-22任一项所述的设备，其特征在于，所述第一区域标识和所述第二区域标识格式不同。
  24. 根据权利要求19-22任一项所述的设备，其特征在于，所述第一区域标识和所述第二区域标识格式相同，且所述第一发送单元还用于：
    向所述终端发送第一指示信息和第二指示信息，所述第一指示信息用于指示所述第一区域标识用于第一通信制式，所述第二指示信息用于指示所述第二区域标识用于第二通信制式；或者，
    向所述终端发送指示信息，所述指示信息用于指示所述第一区域标识用于第一通信制式，所述第二区域标识默认用于第二通信制式；或者，
    向所述终端发送指示信息，所述指示信息用于指示所述第二区域标识用于第二通信制式，所述第一区域标识默认用于第一通信制式。
  25. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-6任一项所述的方法。
  26. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求7-12任一项所述的方法。
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US11290871B2 (en) 2022-03-29
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