CN112118534A - Information transmission method, device, system, base station, and computer-readable storage medium - Google Patents

Information transmission method, device, system, base station, and computer-readable storage medium Download PDF

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Publication number
CN112118534A
CN112118534A CN201910530582.7A CN201910530582A CN112118534A CN 112118534 A CN112118534 A CN 112118534A CN 201910530582 A CN201910530582 A CN 201910530582A CN 112118534 A CN112118534 A CN 112118534A
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China
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base station
terminal
information
cell
uplink carrier
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CN201910530582.7A
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CN112118534B (en
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许森
张光辉
韦乐平
曹磊
杨峰义
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • 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
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

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

Abstract

The disclosure relates to an information sending method, an information sending device, an information sending system, a base station and a computer readable storage medium, and relates to the technical field of communication. The method of the present disclosure comprises: a first base station receives a position reporting control message sent by core network equipment, wherein the position reporting control message is used for indicating the first base station to report the position information of a terminal; the method comprises the steps that a first base station determines a cell identifier corresponding to a supplementary uplink carrier where a terminal resides and a cell identifier corresponding to a resident downlink carrier under the condition that the terminal is configured with a plurality of supplementary uplink carriers; the first base station reports the position information of the terminal to the core network equipment, and the position information comprises: and the cell identifier corresponding to the supplementary uplink carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier, so that the core network equipment can position the terminal.

Description

Information transmission method, device, system, base station, and computer-readable storage medium
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an information sending method, an information sending apparatus, an information sending system, a base station, and a computer-readable storage medium.
Background
The 5G is used as a main technology of a next-generation wireless network and has the technical characteristics of supporting ultra wide band, large connection and the like. Aiming at the problem of insufficient coverage of the 5G Uplink, a concept of SUL (supplemental Uplink) carrier is introduced into 3GPP Release 15, and the main idea is to use a carrier of a low frequency band as a supplemental carrier of an NR (New Radio, New air interface) high frequency band to solve the problem of insufficient coverage of the NR Uplink.
Currently, a core network device may instruct a base station to report location information of a terminal, which is used for positioning the terminal.
Disclosure of Invention
The inventor finds that: in an SA (standard alone) scenario, a core network may configure a radio network with periodically reported identifiers of cells where a user resides in downlink, for positioning the user. In an NSA scenario, the core network may also configure the LTE side to report the location of the user, and report which MN (Master Node) downlink cell and which SN (Secondary Node) downlink cell the user is located in to the core network, so as to locate the user.
In the design mechanism of Rel-15, assuming that LTE and NR share base station coverage, in an actual deployment scenario, there are cases where LTE uses 6-sector networking, NR uses three-sector networking, and the like as shown in fig. 1. This results in the presence of multiple LTE carriers within the coverage area of one NR cell, e.g. two LTE carriers within the NR coverage area in fig. 1 (LTE coverage is indicated by the shaded area). In this deployment scenario, for the case where the NR carrier is used as a downlink carrier and the LTE is used as a Supplemental Uplink (SUL) carrier, it is more accurate to locate the user according to the SUL carrier. However, both NSA and SA scenarios in the current 3GPP protocol do not support reporting of SUL carrier information.
One technical problem to be solved by the present disclosure is: how to improve the accuracy of the positioning of the user of the terminal.
According to some embodiments of the present disclosure, an information sending method is provided, including: a first base station receives a position reporting control message sent by core network equipment, wherein the position reporting control message is used for indicating the first base station to report the position information of a terminal; the method comprises the steps that a first base station determines a cell identifier corresponding to an SUL carrier where a terminal resides and a cell identifier corresponding to a resident downlink carrier under the condition that the terminal is configured with a plurality of supplementary uplink SUL carriers; the first base station reports the position information of the terminal to the core network equipment, and the position information comprises: and the cell identifier corresponding to the SUL carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier, so that the core network equipment can position the terminal.
In some embodiments, the location reporting control message includes: a cell identification list corresponding to the SUL carrier to be reported; the first base station determines, when the terminal configures a supplementary uplink SUL carrier, a cell identifier corresponding to the SUL carrier where the terminal resides, including: the method comprises the steps that a first base station determines a cell identifier corresponding to an SUL carrier where a terminal resides and matched with a cell identifier in a cell identifier list under the condition that the terminal is configured with the SUL carrier; the location information includes: and the cell identifier corresponding to the SUL carrier where the terminal resides is matched with the cell identifier in the cell identifier list.
In some embodiments, the location reporting control message includes: the starting identification bit is used for indicating whether the SUL carrier position of the terminal is reported or not; the first base station determines, when the terminal configures a supplementary uplink SUL carrier, a cell identifier corresponding to the SUL carrier where the terminal resides, including: and the first base station determines the cell identifier corresponding to the SUL carrier where the terminal resides under the condition that the identifier bit is enabled to represent that the SUL carrier position of the terminal is reported and the terminal is configured with the SUL carrier.
In some embodiments, when the first base station supports the non-independent networking mode, the first base station is an LTE base station; the base station determines the cell identifier corresponding to the SUL carrier where the terminal resides under the condition that the terminal configures dual connectivity and the SUL carrier, and the cell identifier comprises: the first base station sends configuration information to the NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in an auxiliary cell group, and the terminal configures at least one supplementary uplink carrier within a coverage area of the NR base station, where the configuration information includes: a report type for indicating the time for reporting the position of the supplementary uplink carrier by the NR base station; the LTE base station receives a position report message sent by the NR base station at the opportunity of reporting the SUL carrier position, wherein the position report message comprises: and the terminal identifies the cell corresponding to the currently resident SUL carrier.
In some embodiments, the timing of reporting the SUL carrier position by the NR base station includes at least one of: when the SUL carrier is added to the terminal and the SUL carrier is changed for the terminal, the preset type uplink carrier is changed into the configuration supplementary uplink carrier.
In some embodiments, the cell identifier corresponding to the downlink carrier where the terminal resides includes: the terminal resides in the cell identification of the LTE cell and resides in the cell identification corresponding to the downlink carrier wave of the NR cell.
In some embodiments, the method further comprises: after receiving a location reporting control message sent by a core network device, a first base station acquires residence information of a terminal, wherein the residence information includes: the method comprises the steps that a cell identifier of a downlink cell where a terminal resides, a cell identifier corresponding to at least one SUL carrier where the terminal resides, and residence time corresponding to each SUL carrier; the first base station sends the resident information of the terminal to a network management system, so that the network management system adjusts the switching threshold of the SUL carrier wave corresponding to the first base station according to the resident information of each terminal corresponding to the first base station in preset time.
In some embodiments, the sending, by the first base station, the camping information of the terminal to the network management system includes: and the first base station sends the resident information of the terminal to the network management system and deletes the resident information of the terminal stored in the first base station under the condition that the terminal releases the Radio Resource Control (RRC) connection or the terminal is switched to the second base station.
In some embodiments, when the first base station supports the non-independent networking mode, the first base station is an LTE base station; (ii) a The base station acquiring the resident information of the terminal comprises the following steps: the LTE base station sends resident information report indication information to the NR base station under the condition that a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is added is used as a cell in the auxiliary cell group, and a terminal configures at least one SUL carrier within the coverage range of the NR base station; the LTE base station receives the resident information report information of the terminal sent by the NR base station under the condition that the resource of the terminal at the NR base station is released, wherein the resident information report information comprises: the NR base station distributes a cell identifier of a main auxiliary cell for the terminal, a cell identifier corresponding to at least one SUL carrier where the terminal resides in the coverage of the NR base station, and residence time corresponding to each SUL carrier.
In some embodiments, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier under the condition that the terminal configures a signaling radio bearer (SRB 3); wherein the time point when the SUL carrier is changed includes: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the time point carries the SUL carrier replacement information.
In some embodiments, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: under the condition that the terminal does not configure a signaling radio bearer SRB3, determining the time difference between the time point of resource change of the terminal at the NR base station and the time point of the NR base station sending a Radio Resource Control (RRC) connection reconfiguration message to the terminal as the residence time corresponding to the SUL carrier; wherein, the time point of the resource change of the terminal at the NR base station comprises: the method comprises the following steps that the NR base station receives a time point of a message which is sent by the LTE base station and used for indicating the release of resources of the terminal at the NR base station, the NR base station prepares to release the resources of the terminal at the NR base station, or the NR base station receives a time point of a message which indicates the replacement of an uplink carrier of the terminal.
In some embodiments, when the first base station supports an independent networking mode, the residence time corresponding to each SUL carrier in which the terminal resides is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier; wherein the time point when the SUL carrier is changed includes: the method comprises the following steps that a first base station issues a switching command to a terminal, the first base station sends a Radio Resource Control (RRC) connection release message to the terminal, the first base station implicitly releases resources to the terminal, or the first base station sends a SUL carrier replacing message to the terminal.
In some embodiments, the network management system determines, according to the residence information of each terminal corresponding to the first base station within a preset time, an SUL carrier whose average residence time is lower than a preset value; and adjusting the switching threshold corresponding to the SUL carrier with the average residence time lower than the preset value so as to increase the residence time of the SUL carrier.
In some embodiments, the first base station checks whether there is a resident information item of the terminal already in the context of the terminal; if the resident information item of the terminal exists in the context of the terminal, the first base station supplements the resident information of the terminal corresponding to the first base station in the resident information item of the existing terminal, otherwise, the resident information of the terminal corresponding to the first base station is added into the context of the terminal as a new resident information item.
In some embodiments, the method further comprises: and the base station sends the resident information of the terminal to other base stations under the condition that the terminal is switched to other base stations.
In some embodiments, when the first base station supports the independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: a cell identifier of a new air interface NR downlink cell where the terminal resides; when the first base station supports the non-independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: the cell identity of the LTE cell where the terminal resides, and the cell identity of the NR cell as the primary-secondary cell where the terminal resides.
In some embodiments, the resident information further includes: the terminal does not distinguish the total residence time of the SUL carriers within the entire downlink cell.
In some embodiments, the resident information report indication information includes: and the residence time counting identification bit is used for indicating the NR base station to start counting the residence time corresponding to at least one SUL carrier where the terminal resides.
In some embodiments, when the first base station supports an independent networking mode, the first base station is a base station supporting NR, and the base station supporting NR receives a location reporting control message sent by an access and mobility management function AMF; when the first base station supports the non-independent networking mode, the first base station is an LTE base station, and the LTE base station receives a position reporting control message sent by a mobile management entity MME.
According to some embodiments of the present disclosure, there is provided a base station comprising: a location reporting indication receiving module, configured to receive a location reporting control message sent by a core network device, where the location reporting control message is used to indicate a base station to report location information of a terminal; a supplementary uplink carrier determining module, configured to determine, when the terminal configures multiple supplementary uplink SUL carriers, a cell identifier corresponding to a SUL carrier where the terminal resides and a cell identifier corresponding to a downlink carrier where the terminal resides; a location information reporting module, configured to report location information of the terminal to a core network device, where the location information includes: and the cell identifier corresponding to the SUL carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier, so that the core network equipment can position the terminal.
In some embodiments, the location reporting control message includes: a cell identification list corresponding to the SUL carrier to be reported; the supplementary uplink carrier determining module is used for determining a cell identifier corresponding to an SUL carrier where the terminal resides and matched with the cell identifier in the cell identifier list under the condition that the terminal is configured with the SUL carrier; the location information includes: and the cell identifier corresponding to the SUL carrier where the terminal resides is matched with the cell identifier in the cell identifier list.
In some embodiments, the location reporting control message includes: the starting identification bit is used for indicating whether the SUL carrier position of the terminal is reported or not; and the supplementary uplink carrier determining module is used for determining the cell identifier corresponding to the SUL carrier where the terminal resides under the condition that the enabled identifier bit represents the reporting of the SUL carrier position of the terminal and the terminal is configured with the SUL carrier.
In some embodiments, when the base station supports the non-independent networking mode, the base station is an LTE base station; the LTE base station further comprises: a configuration information sending module, configured to send configuration information to the NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in an auxiliary cell group, and the terminal configures at least one SUL carrier within a coverage area of the NR base station, where the configuration information includes: a report type for indicating the time for reporting the SUL carrier position by the NR base station; an NR base station information receiving module, configured to receive a location report message sent by an NR base station at an opportunity of reporting the SUL carrier location, where the location report message includes: and the terminal identifies the cell corresponding to the currently resident SUL carrier.
In some embodiments, the timing of reporting the SUL carrier position by the NR base station includes at least one of: when the SUL carrier is added to the terminal and the SUL carrier is changed for the terminal, the preset type uplink carrier is changed into the configuration supplementary uplink carrier.
In some embodiments, the cell identifier corresponding to the downlink carrier where the terminal resides includes: the terminal resides in the cell identification of the LTE cell and resides in the cell identification corresponding to the downlink carrier wave of the NR cell.
In some embodiments, the base station further comprises: the resident information acquisition module acquires the resident information of the terminal after receiving the position reporting control message sent by the core network equipment, wherein the resident information comprises: the method comprises the steps that a cell identifier of a downlink cell where a terminal resides, a cell identifier corresponding to at least one SUL carrier where the terminal resides, and residence time corresponding to each SUL carrier; and the resident information reporting module is used for sending the resident information of the terminal to the network management system so that the network management system can adjust the switching threshold of the SUL carrier wave corresponding to the base station according to the resident information of each terminal corresponding to the base station in the preset time.
In some embodiments, the resident information reporting module is configured to send the resident information of the terminal to the network management system and delete the resident information of the terminal stored in the base station when the terminal releases the radio resource control RRC connection or the terminal is handed over to another base station.
In some embodiments, when the base station supports the non-independent networking mode, the base station is an LTE base station; the LTE base station further comprises: a resident information reporting indication module, configured to send resident information reporting indication information to the NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in an auxiliary cell group, and the terminal configures at least one SUL carrier within a coverage area of the NR base station; a resident information receiving module, configured to receive, under a condition that a resource of a terminal at an NR base station is released, resident information report information of the terminal sent by the NR base station, where the resident information report information includes: the NR base station distributes a cell identifier of a main auxiliary cell for the terminal, a cell identifier corresponding to at least one SUL carrier where the terminal resides in the coverage of the NR base station, and residence time corresponding to each SUL carrier.
In some embodiments, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier under the condition that the terminal configures a signaling radio bearer (SRB 3); wherein the time point when the SUL carrier is changed includes: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the time point carries the SUL carrier replacement information.
In some embodiments, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: under the condition that the terminal does not configure a signaling radio bearer SRB3, determining the time difference between the time point of resource change of the terminal at the NR base station and the time point of the NR base station sending a Radio Resource Control (RRC) connection reconfiguration message to the terminal as the residence time corresponding to the SUL carrier; wherein, the time point of the resource change of the terminal at the NR base station comprises: the method comprises the following steps that the NR base station receives a time point of a message which is sent by the LTE base station and used for indicating the release of resources of the terminal at the NR base station, the NR base station prepares to release the resources of the terminal at the NR base station, or the NR base station receives a time point of a message which indicates the replacement of an uplink carrier of the terminal.
In some embodiments, when the base station supports the independent networking mode, the residence time corresponding to each SUL carrier in which the terminal resides is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier; wherein the time point when the SUL carrier is changed includes: the time point of the base station issuing the switching command to the terminal, the time point of the base station sending a Radio Resource Control (RRC) connection release message to the terminal, the time point of the base station implicitly releasing the resource of the terminal, or the time point of the base station sending a SUL carrier replacing message to the terminal.
In some embodiments, the network management system determines, according to the residence information of each terminal corresponding to the base station within a preset time, an SUL carrier whose average residence time is lower than a preset value; and adjusting the switching threshold corresponding to the SUL carrier with the average residence time lower than the preset value so as to increase the residence time of the SUL carrier.
In some embodiments, the base station further comprises: the context information modification module is used for checking whether a resident information item of the terminal exists in the context of the terminal; if the resident information item of the terminal exists in the context of the terminal, the base station supplements the resident information of the terminal corresponding to the base station in the resident information item of the terminal, otherwise, the resident information of the terminal corresponding to the base station is added into the context of the terminal as a new resident information item.
In some embodiments, the base station further comprises: and the resident information interaction module is used for sending the resident information of the terminal to other base stations under the condition that the terminal is switched to other base stations.
In some embodiments, when the base station supports the independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: a cell identifier of a new air interface NR downlink cell where the terminal resides; when the base station supports the non-independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: the cell identity of the LTE cell where the terminal resides, and the cell identity of the NR cell as the primary-secondary cell where the terminal resides.
In some embodiments, the resident information further includes: the terminal does not distinguish the total residence time of the SUL carriers within the entire downlink cell.
In some embodiments, the resident information report indication information includes: and the residence time counting identification bit is used for indicating the NR base station to start counting the residence time corresponding to at least one SUL carrier where the terminal resides.
In some embodiments, when the base station supports the independent networking mode, the base station is a base station supporting NR, and the location reporting indication receiving module is configured to receive a location reporting control message sent by an access and mobility management function AMF; and when the base station supports the non-independent networking mode, the base station is an LTE base station and receives a position reporting control message sent by a Mobile Management Entity (MME).
According to still other embodiments of the present disclosure, there is provided an information transmitting apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform the information transmitting method according to any of the foregoing embodiments based on instructions stored in the memory.
According to still further embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the information transmitting method of any of the foregoing embodiments.
After receiving the position reporting control message sent by the core network equipment, the base station judges whether the terminal is configured with the SUL carrier, and if the SUL carrier is configured, the base station reports the cell identification corresponding to the SUL carrier where the terminal resides and the cell identification corresponding to the resident downlink carrier at the same time. Because the coverage range corresponding to the SUL carrier is smaller, the core network equipment can improve the accuracy of terminal positioning according to the cell identifier corresponding to the SUL carrier where the terminal resides.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram illustrating a coverage area of a base station in an existing independent networking scenario.
Fig. 2 illustrates a flow diagram of an information sending method of some embodiments of the present disclosure.
Fig. 3 shows a flow diagram of an information sending method according to further embodiments of the disclosure.
Fig. 4 shows a flow diagram of an information sending method according to further embodiments of the disclosure.
Fig. 5 shows a flow diagram of an information sending method of further embodiments of the present disclosure.
Fig. 6 shows a schematic structural diagram of a base station of some embodiments of the present disclosure.
Fig. 7 illustrates a structural schematic diagram of a base station in a non-standalone networking scenario of some embodiments of the present disclosure.
Fig. 8 shows a schematic structural diagram of a base station of further embodiments of the present disclosure.
Fig. 9 shows a schematic structural diagram of a base station in a non-standalone networking scenario of further embodiments of the present disclosure.
Fig. 10 shows a schematic structural diagram of an information transmitting apparatus of some embodiments of the present disclosure.
Fig. 11 is a schematic structural diagram of an information transmitting apparatus according to another embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The scheme is provided for solving the problem that the positioning of the terminal is not accurate enough due to the fact that the base station only reports the information of the downlink cell where the terminal is located in the current 3GPP protocol. Some embodiments of the disclosed information sending method are described below in conjunction with fig. 2.
Fig. 2 is a flow chart of some embodiments of the disclosed method for information transmission. As shown in fig. 2, the method of this embodiment includes: steps S202 to S206. In this embodiment, the base station is a first base station.
In step S202, the core network device sends a location reporting control message to the base station, and correspondingly, the base station receives the location reporting control message sent by the core network device, where the location reporting control message is used to instruct the base station to report the location information of the terminal.
In an independent networking (SA) scenario, a base station may be a base station supporting NR, and the base station supporting NR may receive a Location Report Control (Location Report Control) message sent by an Access and Mobility Management Function (AMF). In a non-independent Networking (NSA) scenario, a base station may be an LTE base station, and the LTE base station may receive a location reporting control message sent by an MME (Mobility Management Entity). In the following embodiments, the SA scenario and the NSA scenario will be described in detail.
In some embodiments, the location reporting control message may include location reporting configuration information, and in order to be compatible with the existing standard, the location reporting configuration information may include: and the starting identification bit is used for indicating whether the SUL carrier position of the terminal is reported or not. For example, the enabled flag may be represented by 1bit, if the enabled flag is 1, it indicates that the base station needs to report the SUL carrier position of the terminal, and if the enabled flag is 0, it indicates that the base station does not need to report the SUL carrier position of the terminal, and the base station reports according to the existing protocol.
In some embodiments, the location reporting configuration information may further include: and a list of cell identifiers corresponding to the SUL carriers to be reported. The cell identifier list may also be empty, and in the empty case, it indicates that the base station needs to report the cell identifiers corresponding to all SUL carriers. Otherwise, the base station determines the cell identifier corresponding to the SUL carrier where the terminal resides and matched with the cell identifier in the cell identifier list; and subsequently only reporting the cell identifier corresponding to the SUL carrier where the terminal resides and matched with the cell identifier in the cell identifier list.
In step S204, the base station determines a cell identifier corresponding to the SUL carrier where the terminal resides and a cell identifier corresponding to the downlink carrier where the terminal resides, when the terminal configures the supplemental uplink SUL carrier.
And after the base station acquires the position reporting control message, analyzing the position reporting configuration information, and if the starting identification bit is found to represent that the SUL carrier position of the terminal is reported. The base station further judges whether the terminal is configured with the SUL carrier, and if the SUL carrier is configured, the base station determines the cell identifier corresponding to the SUL carrier where the terminal resides. In the present disclosure, the cell identifier corresponding to the SUL carrier where the terminal resides is a downlink cell identifier corresponding to the SUL carrier.
In the SA scenario, the base station may directly determine a cell identifier corresponding to an SUL carrier where the terminal resides. In an NSA scenario, an LTE base station needs to interact with an NR base station serving as an SN to obtain a cell identifier corresponding to an SUL carrier where a terminal resides within a coverage area of the NR base station. Two scenarios will be described in detail in the following embodiments.
In step S206, the base station reports the location information of the terminal to the core network device, so that the core network device can locate the terminal.
The base station may Report the Location information of the terminal to the core network device in response to a Location Report message of the core network device. The base station may report the location information of the terminal when the carrier where the terminal resides changes. For example, the base station may report the location information of the terminal in the case that the terminal modifies or adds the SUL carrier. Or the base station may report the location information of the terminal periodically, and the time for reporting the location information of the terminal by the base station may be set according to actual requirements, which is not limited to the examples given above.
The location information may include, in addition to parameters specified in the 3GPP protocol: and the cell identification corresponding to the SUL carrier where the terminal resides and the cell identification corresponding to the resident downlink carrier. The cell identifier corresponding to the SUL carrier where the terminal resides may be a cell identifier corresponding to the SUL carrier where the terminal currently resides. The cell identifier corresponding to the downlink carrier where the terminal resides may be a cell identifier corresponding to a downlink carrier where the terminal currently resides. In practical application, the cell identifiers corresponding to each SUL carrier or each downlink carrier where the terminal resides in may also be reported according to requirements. In an SA scenario, a cell identifier corresponding to a downlink carrier where a terminal resides includes: and the terminal resides in a cell identifier corresponding to the NR downlink carrier. In an NSA scenario, a cell identifier corresponding to a downlink carrier where a terminal resides includes: the terminal resides in the cell identification of the LTE cell and resides in the cell identification corresponding to the downlink carrier wave of the NR cell.
The core network equipment can determine that the terminal is located on a certain SUL carrier in the resident cell according to the cell identifier corresponding to the SUL carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier, and can send the information to the positioning server for positioning the terminal.
In the method of the above embodiment, after receiving the position reporting control message sent by the core network device, the base station determines whether the terminal configures the SUL carrier, and if the SUL carrier is configured, reports the cell identifier corresponding to the SUL carrier where the terminal resides and the cell identifier corresponding to the downlink carrier where the terminal resides at the same time. Because the coverage range corresponding to the SUL carrier is smaller, the core network equipment can improve the accuracy of terminal positioning according to the cell identifier corresponding to the SUL carrier where the terminal resides.
Further embodiments of the disclosed method for sending information are described below in conjunction with fig. 3.
Fig. 3 is a flow chart of some embodiments of the disclosed method for information transmission. As shown in fig. 3, the method of this embodiment includes: steps S302 to S308. In this embodiment, the base station is a first base station.
In step S302, after receiving the location reporting control message sent by the core network device, the base station obtains the resident information of the terminal.
The resident information of the terminal includes the location information of the terminal in the foregoing embodiment. The resident information includes more comprehensive information, for example, the resident information includes: the method comprises the steps of identifying a cell identifier of a downlink cell where a terminal resides, identifying a cell corresponding to at least one SUL carrier where the terminal resides, and identifying residence time corresponding to each SUL carrier. In the SA scenario, the cell identifier of the downlink cell where the terminal resides includes, for example: and the cell identification of the NR downlink cell where the terminal resides. In an NSA scenario, the cell identifier of the downlink cell where the terminal resides includes, for example: the terminal resides in cell identification of an LTE cell and resides in cell identification of a downlink primary auxiliary cell (PSCell) of an NR cell. The resident information may further include: the terminal does not distinguish the total residence time of the SUL carriers within the entire downlink cell. A part of the location information in the residence information may be sent by the base station to the core network device for positioning. The entirety of the resident information may be used for optimization of network parameters.
As in the foregoing embodiment, the location reporting control message may include location reporting configuration information, where the location reporting configuration information may include: and the starting identification bit is used for indicating whether the SUL carrier position of the terminal is reported or not. And after receiving the position report control message sent by the core network equipment, the base station starts to count the resident information of the terminal according to the starting identification bit. .
That is, the base station locally starts to record the residence information of the terminal in response to the indication of the core network device, including the cell identifier corresponding to each downlink cell or each SUL carrier where the terminal resides or currently resides, and the residence time, where the residence time may be represented in the form of a user start and end timestamp or a time difference between the start and end timestamps. In this way, the base station can maintain the change information of the terminal position in each time period within the coverage area of the base station.
In the SA scenario, the base station may directly determine a cell identifier corresponding to an SUL carrier where the terminal resides and a corresponding residence time. In an NSA scenario, an LTE base station needs to interact with an NR base station serving as an SN to obtain a cell identifier corresponding to an SUL carrier where a terminal resides in a coverage area of the NR base station and a corresponding residence time. Two scenarios will be described in detail in the following embodiments.
In step S304, the base station transmits the camping information of the terminal to the network management system.
In some embodiments, an opportunity may be set for the base station to transmit the camping information of the terminal to the network management system. For example. And the base station sends the resident information of the terminal to the network management system under the condition that the terminal releases the Radio Resource Control (RRC) connection or the terminal is switched to other base stations. The base station may delete the resident information of the terminal stored in the base station after transmitting the resident information of the terminal to the network management system.
In step S306, the network management system adjusts the switching threshold of the SUL carrier according to the resident information of each terminal corresponding to the base station within the preset time.
In some embodiments, the network management system determines, according to the residence information of each terminal corresponding to the base station within a preset time, an SUL carrier whose average residence time is lower than a preset value; and adjusting the switching threshold corresponding to the SUL carrier with the average residence time lower than the preset value so as to increase the residence time of the SUL carrier.
In some embodiments, the information sending method may further include: step S308, the base station sends the resident information of the terminal to other base stations under the condition that the terminal is switched to other base stations.
Step S308 and step S304 are executed in parallel without distinguishing the order. After the terminal is switched to other target base stations, the source base station can send the resident information of the terminal to the target base stations, so that the resident information of the terminal can be continuously counted and then sent to the network management system, and the network management system can adjust network parameters such as switching parameters according to the resident information of the terminal under different base stations.
In the method of the above embodiment, the base station performs statistics on the residence information of the terminal, and the residence information includes information such as a cell identifier and residence time corresponding to the supplementary uplink carrier of the terminal. The base station sends the resident information of the terminal to the network management system, and the network management system can adjust the switching parameters and the like of the supplementary uplink carriers according to the cell identification, the resident time and the like corresponding to the supplementary uplink carriers, so that automatic parameter adjustment can be realized, the manual participation degree is reduced, and the adjustment efficiency and the accuracy are improved.
Some embodiments of the information sending method of the present disclosure in the SA scenario are described below in conjunction with fig. 4.
Fig. 4 is a flow chart of some embodiments of the disclosed method for information transmission. As shown in fig. 4, the method of this embodiment includes: steps S402 to S416. In this embodiment, the base station is a first base station, and other destination base stations during handover are second base stations.
In step S402, the base station receives the location reporting control information sent by the AMF.
The base station may be a base station supporting NR, and the base station supporting NR may be a base station supporting only NR, or may be a base station supporting both NR and other air interface systems. The location reporting control information carries location reporting configuration information. The location report configuration information may be used to indicate the relevant configuration of the information that needs to be reported by the base station, and may also be used to indicate the base station to start counting the residence information of the terminal and the relevant configuration of the residence information. The location reporting configuration information includes, but is not limited to, the following in addition to the parameters defined by the current protocol:
the enabling flag is used for indicating whether to report the SUL carrier position of the terminal, for example, the enabling flag is 1bit, and when the enabling flag is 1, the enabling flag indicates that the SUL carrier position of the terminal is reported, and the enabling flag may also be used for indicating that the residence information corresponding to the SUL carrier of the terminal is counted;
if there is no information, it indicates that the location information or the residence information corresponding to all SUL carriers corresponding to the terminal needs to be counted or reported, otherwise, only reports or counts the location information or the residence information corresponding to the SUL carrier where the terminal resides and matched with the cell identifier in the cell identifier list.
In step S404, the base station stores the location report configuration information about the terminal in the location reporting control information.
In step S406, the base station starts counting the camping information of the terminal according to the location report configuration information.
The base station judges whether the starting identification bit indicates that the SUL carrier position of the terminal is reported, if so, the base station checks whether the terminal is configured with the SUL carrier in the base station, if so, the base station checks whether the cell identification corresponding to the SUL carrier is in the cell identification list corresponding to the SUL carrier to be reported, and if the cell identification corresponding to the SUL carrier is in the cell identification list corresponding to the SUL carrier to be reported or the cell identification list corresponding to the SUL carrier to be reported is empty, the base station starts to record the resident information of the terminal. In other cases than the above, the base station performs processing according to the existing protocol. The resident information includes, for example, the following:
the information of the cell in the resident information may be divided into LTE or NR portions according to an air interface scheme, where each portion includes, for example:
cell identities corresponding to the camping downlink carriers, for example, the cell identity corresponding to the LTE carrier may be represented by 28 bits, and the cell identity corresponding to the NR carrier may be represented by 36 bits;
the cell identifier list corresponding to the SUL carriers includes cell identifiers corresponding to one or more SUL carriers (which may correspond to the cell identifier list corresponding to the SUL carriers to be reported, or may be cell identifiers corresponding to all SUL carriers), and if there is no filler in the entry, the entry indicates that the terminal uses a common uplink carrier residing in the downlink cell to perform work. The SUL carrier may be understood as an uplink carrier in a frequency band different from a downlink carrier used by the terminal. The common uplink carrier may be understood as an uplink carrier used by the current downlink carrier, and if the current carrier is in a TDD mode, the common uplink carrier refers to a co-frequency uplink carrier used by the current downlink carrier, and if the current carrier is in an FDD mode, the common uplink carrier refers to an uplink carrier corresponding to the current downlink carrier.
The dwell time of each SUL carrier;
the residence time of the resident cell, i.e. the total residence time when the uplink carrier type is not differentiated in the whole cell.
In some embodiments, the residence time corresponding to each SUL carrier in which the terminal resides is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier; the time point when the SUL carrier is changed includes: a time point when the base station issues a handover command to the terminal, a time point when an RRC (Radio Resource Control) connection of the terminal is released, a time point when the base station implicitly releases resources of the terminal, or a time point when the base station transmits a SUL carrier replacement message to the terminal.
For example, the base station adds the time point T0 of the SUL carrier to the terminal through the RRC connection reconfiguration message as a time starting point; the base station sends a switching command to the terminal, or the NR base station sends an RRC connection release message to the terminal, or the base station implicitly releases the terminal resource, or the base station sends an RRC connection reconfiguration message to the terminal, wherein the RRC connection reconfiguration message carries a time point T1 of replacing an SUL message as a time endpoint; the time difference between T1 and T0 is the residence time of the SUL carrier, and is expressed in ms (milliseconds).
In step S408, the base station reports the location information of the terminal to the AMF.
The location reporting control message can also carry a reporting mode of the base station, and the base station reports the location information of the terminal according to the reporting mode. The reporting mode, for example, specifies fields, formats, and the like corresponding to various information, and may further include: reporting the opportunity, for example, reporting the opportunity under the condition that the carrier where the terminal resides is updated, or periodically reporting the opportunity.
The base station may extract the location information of the terminal from the resident information and report it. The location information of the terminal includes, but is not limited to, the following information:
the cell identity corresponding to the NR downlink carrier, which may be represented by 36 bits, for example.
The cell identifier corresponding to the SUL carrier where the terminal resides (may correspond to a cell identifier list corresponding to the SUL carrier to be reported), for example, when the SUL carrier adopts an LTE carrier, the SUL carrier may be represented by 28 bits.
After receiving the location information of the terminal, the AMF determines that the terminal is located in a certain uplink supplementary carrier in the resident cell according to the cell identifier corresponding to the downlink carrier and the cell identifier corresponding to the SUL carrier, and sends the information to a location server so as to locate the terminal.
In step S410, the base station modifies the context of the terminal according to the camping information of the terminal.
In some embodiments, the base station checks whether there is a resident information item of the terminal already in the context of the terminal. If the resident information item of the terminal exists in the context of the terminal, the base station supplements the resident information of the terminal corresponding to the base station in the resident information item of the terminal, otherwise, the resident information of the terminal corresponding to the base station is added into the context of the terminal as a new resident information item. That is, the base station compares the recorded resident information of the terminal with the resident information in the context of the terminal, and adds the resident information that the context does not have originally to the context. The resident information of the terminal is as described in step S406.
In step S412, the base station transmits the camping information of the terminal to the network management system.
In some embodiments, after the base station needs to release the RRC connection of the terminal or the terminal is handed over to another base station, the resident information of the terminal is sent to the network management system, and meanwhile, the resident information of the terminal stored in the base station may be deleted, so as to save the storage space.
In step S414, the network management system adjusts the switching threshold of the SUL carrier according to the resident information of each terminal corresponding to the base station within the preset time.
In step S416, when the terminal is handed over to another target base station, the base station transmits the camping information of the terminal to the target base station.
Steps S416 and S412 are not in sequence and may be executed in parallel.
The method of the embodiment reports the cell identifier corresponding to the SUL carrier where the terminal resides to the core network device through the base station for the SA scene, so that the accuracy of terminal positioning is improved. The base station counts the resident information of the terminal and sends the resident information to the network management system, and the network management system can optimize the switching parameters according to the resident information of the terminal and reduce the switching times. The base station sends the resident information to the target base station after the terminal is switched, so that the position information of the terminal can be continuously recorded, and the switching parameters among different base stations can be optimized conveniently. The method of the embodiment has good backward compatibility and deployment feasibility, is enhanced on the existing protocol, does not introduce a new protocol process, and has low implementation difficulty.
Some application examples of the information transmission method of the present disclosure in the SA scenario are as follows. In the SA scenario of this application, there are two LTE co-frequency carriers in the NR coverage area, the downlink frequency point of the two LTE carriers is F1, and the cell identifiers are CID1 and CID2, respectively. Currently, the terminal uses the supplemental uplink carrier corresponding to CID 1. The frequency point of the NR carrier is 3.5GHz, TDD mode.
(1) And the AMF sends a Location Report Control message to the NR base station to indicate the NR base station to Report the position information of the terminal. The Location Report Control message carries Location Report configuration information. The location report configuration information includes the following information:
an enabled flag bit for indicating whether to report the SUL carrier position of the terminal: the identification bit is 1.
A list of cell identifiers corresponding to the SUL carriers to be reported: CID 1.
(2) And the NR base station stores the Location Report configuration information about the terminal carried in the Location Report Control message.
(3) And the NR base station determines the SUL carrier position aiming at the terminal according to the starting identification bit to report, and starts to record the resident information of the terminal in the process of checking that the terminal configures the SUL carrier in the base station. The resident information of the terminal includes, but is not limited to, the following information:
cell ID of NR downlink carrier: NR CID
Cell identity corresponding to the SUL carrier to be reported: CID1
Residence time corresponding to the SUL carrier to be reported: 10240ms
(4) The NR base station reports the Location information of the terminal to the AMF according to the reporting mode in the Location Report Control message, where the Location information includes, but is not limited to, the following:
cell identity corresponding to the camping downlink carrier: NR CID
Identification of the downlink cell corresponding to the SUL carrier: CDI1
(5) The NR base station checks whether there is camping information of the terminal in the context of the terminal. If the resident information exists, the resident information of the terminal corresponding to the downlink cell controlled by the base station and the SUL carrier is supplemented in the existing resident information, otherwise, a new resident information is generated for the terminal and is stored in the context of the terminal. The resident information includes, but is not limited to, the following:
cell ID of NR downlink carrier: NR CID
Cell identity corresponding to the SUL carrier to be reported: CID1
Residence time corresponding to the SUL carrier to be reported: 10240ms
Residence time of the resident cell: 24000ms
(6) And when the terminal is switched to other target base stations from the NR base station, transmitting the resident information of the terminal to the target base station.
(7) And under the condition that the NR base station needs to release the RRC connection of the terminal or the terminal is switched to other target base stations by the NR base station, transmitting the resident information of the terminal to a network management system, and adjusting the switching threshold of the SUL carrier by the network management system.
Some embodiments of the information sending method of the present disclosure in the NSA scenario are described below with reference to fig. 5.
Fig. 5 is a flow chart of some embodiments of the disclosed method for information transmission. As shown in fig. 5, the method of this embodiment includes: steps S502 to S522. In this embodiment, the LTE base station is the first base station. In step S502, the LTE base station receives the location reporting control information sent by the MME.
The location reporting control information includes location reporting configuration information, where the location reporting configuration information may be used to indicate a relevant configuration of information that the base station needs to report, and may also be used to indicate the base station to start counting the resident information of the terminal and the relevant configuration of the resident information. The location reporting configuration information includes, but is not limited to, the following in addition to the parameters defined by the current protocol:
the enabling flag is used for indicating whether to report the SUL carrier position of the terminal, for example, the enabling flag is 1bit, and when the enabling flag is 1, the enabling flag indicates that the SUL carrier position of the terminal is reported, and the enabling flag may also be used for indicating that the residence information corresponding to the SUL carrier of the terminal is counted;
if there is no information, it indicates that the location information or the residence information corresponding to all SUL carriers corresponding to the terminal needs to be counted or reported, otherwise, only reports or counts the location information or the residence information corresponding to the SUL carrier where the terminal resides and matched with the cell identifier in the cell identifier list.
In step S504, the base station stores the location report configuration information about the terminal in the location report control information.
In step S506, the LTE base station sends configuration information to the NR base station according to the location report configuration information when the cell to which the NR base station is added or prepared to be added is a cell in the secondary cell group or a cell to which the NR base station is to be added is a cell in the secondary cell group and the terminal configures at least one SUL carrier within the coverage of the NR base station. The NR base station is a first NR base station, and the LTE base station is a first LTE base station.
When a terminal in an LTE base station coverage area needs to add or has added an NR base station as a Cell in an SCG (Secondary Cell Group) and one or more SUL carriers are deployed for the terminal within the NR base station coverage area, the LTE base station needs to check whether an activation flag is a preset value, where the preset value indicates that the SUL carrier position of the terminal is reported or indicates that statistics is performed on residence information corresponding to the SUL carrier of the terminal, and if the activation flag is not the preset value, the method is performed according to the current specification, otherwise, the LTE base station may notify the configuration information to the NR base station through an X2 interface message, where the configuration information includes, for example:
the report type is used to indicate the timing of reporting the SUL carrier position by the NR base station, where the timing of reporting the SUL carrier position by the NR base station includes, for example, changing from a preset type uplink carrier to a configured supplemental uplink carrier when adding the SUL carrier to the terminal and when changing the SUL carrier to the terminal. Changing the SUL carrier for the terminal includes: changing the SUL carrier where the terminal currently resides into other SUL carriers, or changing the SUL carrier where the terminal currently resides into other preset type uplink carriers; the report type can adopt an enumeration type;
resident information report indication information: a residence time counting identification bit, configured to instruct the NR base station to start counting residence times corresponding to at least one SUL carrier in which the terminal resides; the residence time statistic identification bit can be represented by 1bit or enumeration type, and the residence information report indication information is sent when the LTE base station needs the NR base station to report the residence information.
In some embodiments, the configuration information may further include a cell identifier list corresponding to the SUL carrier to be reported.
In step S508, the NR base station stores the configuration information of the terminal, and starts to count the camping information corresponding to the terminal under the NR base station according to the configuration information.
The NR base station may determine whether to start counting the residence information corresponding to the terminal under the NR base station according to the residence time counting flag, where the residence information corresponding to the terminal under the NR base station includes, but is not limited to, the following:
cell identity of the primary and secondary cell (PSCell) allocated by the NR base station for the terminal; for example, the cell identity corresponding to the NR carrier may be represented by 36 bits;
the list of cell identifiers corresponding to SUL carriers where the terminal resides in the coverage area of the NR base station includes: a cell identifier corresponding to an SUL carrier where at least one terminal resides;
residence time of each SUL carrier on which a terminal resides within the coverage of the NR base station
In some embodiments, in the case that the terminal configures SRB3 (signaling radio bearer 3), the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: and determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier. The time point when the SUL carrier is changed includes: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the time point carries the SUL carrier replacement information.
For example, when the terminal configures the SRB3, the NR base station adds a time point T0 of the SUL carrier to the terminal through the RRC connection reconfiguration message as a time start point. And the NR base station sends an RRC connection release message to the terminal, or the NR base station implicitly releases the terminal resources, or the base station sends a time point T1 that the RRC connection reconfiguration message carries the SUL replacement message to the terminal. The time difference between T1 and T0 is the residence time of the SUL carrier, and is expressed in ms (milliseconds).
In some embodiments, in the case that the terminal is not configured with SRB3, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method: and under the condition that the terminal does not configure the signaling radio bearer SRB3, determining the time difference between the time point of the resource change of the NR base station by the terminal and the time point of the NR base station finishing sending the RRC connection reconfiguration message to the terminal as the residence time corresponding to the SUL carrier. The terminal includes, at a time point when the resource of the NR base station is changed: the method comprises the following steps that the NR base station receives a time point of a message which is sent by the LTE base station and used for indicating the release of resources of the terminal at the NR base station, the NR base station prepares to release the resources of the terminal at the NR base station, or the NR base station receives a time point of a message which indicates the replacement of an uplink carrier of the terminal.
For example, when the terminal is not configured with the SRB3, the NR base station takes a time point T0 at which the signaling including the RRC reconfiguration message is sent on the X2 interface as a time starting point, and the NR base station receives an SgNB Release Request (assisted gbb Release Request) sent by the LTE base station on the X2 interface, or the NR base station prepares to Release the resource of the terminal at the NR base station, or the SgNB Modification Request (assisted gbb Modification Request) carries a time point T1 at which an uplink carrier change message is changed, and a time difference between T1 and T0 is a residence time of the SUL carrier, which is in ms (milliseconds).
In step S510, the NR base station transmits a position report message to the LTE base station at the time of reporting the SUL carrier position, and correspondingly, the LTE base station receives the position report message transmitted by the NR base station at the time of reporting the SUL carrier position.
After the SUL carrier of the terminal corresponding to the NR base station is configured or changed, the NR base station may notify the LTE base station of change information about the uplink carrier of the terminal through an X2 interface message, and the change information may be carried in a location report message. The change information may carry a cell identifier corresponding to an SUL carrier where the terminal currently resides, and if the change information does not carry a cell identifier corresponding to an SUL carrier, it indicates that the terminal has changed from the SUL carrier to reside in an uplink carrier of another type, and the change information may also carry a cell identifier corresponding to a downlink carrier where the terminal resides in an NR cell.
In step S512, after receiving the location report message sent by the NR base station, the LTE base station reports the location information of the terminal to the MME, so as to locate the terminal. Location information includes, but is not limited to, the following:
cell identity of LTE cell where terminal is camped
Cell identity corresponding to downlink carrier residing in NR cell where terminal resides
The identity of the downlink cell corresponding to the SUL carrier where the terminal resides: i.e. carried in location report messages sent by the NR base station
The LTE base station may require the NR base station to report when the SUL carrier where the terminal resides in the NR base station is changed, and further, the LTE base station reports the location information of the terminal to the MME, or may report periodically to the NR base station, and the LTE base station reports periodically to the MME, or reports at other reporting occasions, which is not limited to the examples given above.
In step S514, the NR base station transmits camping information report information to the LTE base station when the terminal releases the resources of the NR base station.
The resource release of the terminal at the NR base station includes, for example: the NR base station sends an SgNB Release Request Acknowledge (auxiliary gbb Release Request Acknowledge) message to the LTE base station, or the NR base station sends an SgNB Release requested (auxiliary gbb Release Request) message to the LTE base station, where the two messages may carry resident information report information, where the resident information report information includes: and the terminal corresponds to the resident information under the NR base station.
In step S516, the LTE base station modifies the context of the terminal according to the camping information of the terminal.
The LTE base station may integrate the residence information of the terminal under the LTE base station and the residence information of the terminal under the NR base station as the residence information of the terminal, and modify the context of the terminal. The LTE base station checks whether there is a camping information item of the terminal in the context of the terminal. If the resident information item of the terminal exists in the context of the terminal, the LTE base station supplements the resident information of the corresponding terminal in the resident information item of the existing terminal, otherwise, the resident information of the corresponding terminal is added into the context of the terminal as a new resident information item. The resident information of the terminal includes, but is not limited to, the following:
identity of LTE cell where the terminal is camping: can be represented by 28 bits
Cell identity of the primary and secondary cell (PSCell) allocated by the NR base station for the terminal; can be expressed by 36 bits;
a downlink cell identity list corresponding to the SUL carrier where the terminal resides: including cell identifiers corresponding to one or more SUL carriers (which may correspond to a cell identifier list corresponding to a SUL carrier to be reported, or may be cell identifiers corresponding to all SUL carriers), and if there is no filler in the entry, indicating that the terminal uses a common uplink carrier residing in a downlink cell to perform work
Residence time per SUL carrier
The residence time of the resident cell, i.e. the total residence time when the uplink carrier type is not differentiated in the whole cell.
In step S518, the LTE base station transmits the camping information of the terminal to the network management system.
In some embodiments, after the LTE base station needs to release the RRC connection of the terminal or the terminal is handed over to another base station, the camping information of the terminal is sent to the network management system, and meanwhile, the camping information of the terminal stored in the base station may be deleted, so as to save the storage space.
In step S520, the network management system adjusts the switching threshold of the SUL carrier under the coverage of the NR base station according to the residence information of each terminal corresponding to the NR base station within the preset time.
In step S522, when the terminal is handed over to another target base station, the LTE base station transmits the camping information of the terminal to the target base station. The other destination base station is a second base station.
Steps S522 and S518 are not in sequence, and may be executed in parallel.
In the method of the embodiment, for the NSA scenario, the LTE base station obtains the cell identifier corresponding to the end-resident SUL carrier from the NR base station serving as the SN, and reports the cell identifier corresponding to the end-resident SUL carrier to the core network device, thereby improving the accuracy of terminal positioning. And the NR base station counts the resident information of the terminal and sends the resident information to the LTE base station, the LTE base station sends the resident information to the network management system, and the network management system can optimize the switching parameters according to the resident information of the terminal and reduce the switching times. The LTE base station sends the resident information to the target base station after the terminal is switched, so that the position information of the terminal can be continuously recorded, and the switching parameters among different base stations can be optimized conveniently. The method of the embodiment has good backward compatibility and deployment feasibility, is enhanced on the existing protocol, does not introduce a new protocol process, and has low implementation difficulty.
Some application examples of the information transmission method disclosed in the present disclosure in the NSA scenario are as follows. In the NSA scenario in this application, the LTE base station is used as MN, the NR base station is used as SN, the cell of the NR base station is used as a cell in the auxiliary cell group, two LTE co-frequency carriers are in the NR coverage area, the downlink frequency point of the two LTE carriers is F1, and the cell identifiers are CID1 and CID2, respectively. Currently, the terminal uses the supplemental uplink carrier corresponding to CID 1.
(1) And the MME sends a Location Report Control message to the LTE base station to indicate the LTE base station to Report the position information of the terminal. The Location Report Control message carries Location Report configuration information. The location report configuration information includes the following information:
an enabled flag bit for indicating whether to report the SUL carrier position of the terminal: the identification bit is 1.
A list of cell identifiers corresponding to the SUL carriers to be reported: CID 1.
(2) The LTE base station saves the Location Report configuration information about the terminal carried in the Location Report Control message.
(3) And the LTE base station sends configuration information to the NR base station according to the position report configuration information under the condition that the cell of the NR base station is used as a cell in the auxiliary cell group or the cell to which the NR base station is added is used as a cell in the auxiliary cell group and the terminal configures at least one SUL carrier within the coverage range of the NR base station. The configuration information includes, for example:
report type: when the SUL carrier is added to the terminal, or the SUL carrier is changed for the terminal, reporting is carried out, or the SUL carrier is changed from a preset type uplink carrier to a configuration supplementary uplink carrier
Resident information report indication information: residence time statistics flag bit: the identification bit is 1
(4) And the NR base station stores the configuration information of the terminal and starts to count the resident information of the terminal according to the configuration information. The resident information includes, but is not limited to, the following:
cell identification of PSCell allocated by NR base station to terminal: PSCell ID
Cell identity corresponding to the SUL carrier to be reported: CID1
Residence time corresponding to the SUL carrier to be reported: 10240ms
(5) And the NR base station sends a position report message to the LTE base station when the SUL carrier is added to the terminal or changed for the terminal or changed from a preset type uplink carrier to a configuration supplementary uplink carrier. The location report message includes, for example:
cell identification of PSCell allocated by NR base station to terminal: PSCell ID
Cell identity corresponding to the SUL carrier to be reported: CID1
(6) After receiving the position report message sent by the NR base station, the LTE base station reports the position information of the terminal to the MME so as to position the terminal. Location information includes, but is not limited to, the following:
cell identity of LTE cell where the terminal is camped: LTE Cell ID
Cell identity corresponding to the downlink carrier of the residing NR cell where the terminal resides: PSCell ID
The identity of the downlink cell corresponding to the SUL carrier to be reported: CID1
(7) And the NR base station sends the resident information report information to the LTE base station under the condition that the NR base station sends an SgNB Release Request acknowledgement message to the LTE base station or the NR base station sends an SgNB Release Request message to the LTE base station. The resident information report information includes, for example:
cell identification of PSCell allocated by NR base station to terminal: PSCell ID
Cell identity corresponding to the SUL carrier to be reported: CID1
Residence time corresponding to the SUL carrier to be reported: 10240ms
(8) And the LTE base station modifies the context of the terminal according to the resident information of the terminal. The resident information includes, for example:
cell identity of LTE cell where the terminal is camped: LTE Cell ID
Cell identification of PSCell allocated by NR base station to terminal: PSCell ID
Cell identity corresponding to the SUL carrier to be reported: CID1
Residence time corresponding to the SUL carrier to be reported: 10240ms
Residence time of the resident cell: 24000ms
(9) And the LTE base station sends the resident information of the terminal to a network management system so that the network management system can adjust the switching threshold of the SUL carrier wave under the coverage range of the NR base station according to the resident information of each terminal corresponding to the NR base station in preset time.
(10) And the LTE base station transmits the resident information of the terminal to the target base station under the condition that the terminal is switched to other target base stations.
The method of each embodiment solves the problem that when a terminal needs more accurate position information in a scene with a plurality of LTE carriers in an NR coverage area, the current SUL design scheme can only support a single uplink supplementary carrier and cannot be applied to a non-co-sited deployment scene. The residence time in the supplementary uplink carrier can be effectively recorded, and the method can be used for parameter optimization and adjustment aiming at the uplink supplementary carrier, thereby reducing the manual participation and reducing the OPEX (capital expenditure) of an operator. The method of the embodiment simultaneously supports two typical deployment scenarios of SA and NSA, and can provide more accurate user position information for the positioning platform. The method of the embodiment has the advantages of small terminal size, good backward compatibility and deployment feasibility, enhancement on the existing protocol, no introduction of a new protocol process and low implementation difficulty.
The present disclosure also provides a base station, described below in conjunction with fig. 6.
Fig. 6 is a block diagram of some embodiments of a base station of the present disclosure. As shown in fig. 6, the base station 60 of this embodiment includes: a location reporting indication receiving module 602, a supplementary uplink carrier determining module 604, and a location information reporting module 606.
A location reporting indication receiving module 602, configured to receive a location reporting control message sent by a core network device, where the location reporting control message is used to indicate a base station to report location information of a terminal.
In some embodiments, in an independent networking scenario, a base station is a base station supporting NR, and a location reporting indication receiving module is configured to receive a location reporting control message sent by an access and mobility management function AMF; in a non-independent networking scenario, a base station is an LTE base station and receives a position reporting control message sent by a mobility management entity MME.
The supplemental uplink carrier determining module 604 is configured to determine, when the terminal configures a supplemental uplink SUL carrier, a cell identifier corresponding to a SUL carrier where the terminal resides and a cell identifier corresponding to a downlink carrier where the terminal resides.
A location information reporting module 606, configured to report location information of the terminal to the core network device, where the location information includes: and the cell identifier corresponding to the SUL carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier, so that the core network equipment can position the terminal.
In some embodiments, the location reporting control message includes: and a list of cell identifiers corresponding to the SUL carriers to be reported. The supplemental uplink carrier determining module 604 is configured to determine, when the terminal configures the SUL carrier, a cell identifier corresponding to the SUL carrier where the terminal resides and which is matched with the cell identifier in the cell identifier list. The location information includes: and the cell identifier corresponding to the SUL carrier where the terminal resides is matched with the cell identifier in the cell identifier list.
In some embodiments, the location reporting control message includes: and the starting identification bit is used for indicating whether the SUL carrier position of the terminal is reported or not. The supplementary uplink carrier determining module 604 is configured to determine a cell identifier corresponding to an SUL carrier where the terminal resides, when the enabled identifier indicates that the SUL carrier position of the terminal is reported and the terminal configures the SUL carrier.
In an SA scenario, the base station in the above embodiment may be a base station supporting NR, and in an NSA scenario, the base station in the above embodiment may be an LTE base station. Some embodiments of the base station in the NSA scenario are described below in conjunction with fig. 6.
Fig. 7 is a block diagram of some embodiments of a base station in the context of NSA of the present disclosure. As shown in fig. 7, the base station 70 of this embodiment includes: a location reporting indication receiving module 702, a supplementary uplink carrier determining module 704, and a location information reporting module 706, which have the same or similar functions as the location reporting indication receiving module 602, the supplementary uplink carrier determining module 604, and the location information reporting module 606, respectively. The base station 70 further includes: a configuration information sending module 708 and an NR base station information receiving module 710.
A configuration information sending module 708, configured to send configuration information to the NR base station when a cell of a new air interface NR base station is a cell in an auxiliary cell group or a cell to which the NR base station is to be added is a cell in an auxiliary cell group, and the terminal configures at least one SUL carrier within a coverage area of the NR base station, where the configuration information includes: and the report type is used for indicating the time for reporting the SUL carrier position by the NR base station.
The NR base station information receiving module 710 is configured to receive a location report message sent by the NR base station at an opportunity of reporting the SUL carrier location, where the location report message includes: and the terminal identifies the cell corresponding to the currently resident SUL carrier.
In some embodiments, the timing of reporting the SUL carrier position by the NR base station includes at least one of: when the SUL carrier is added to the terminal, the SUL carrier is changed for the terminal, or the SUL carrier is changed from the preset type uplink carrier to the configured supplementary uplink carrier.
In some embodiments, the cell identifier corresponding to the downlink carrier where the terminal resides includes: the terminal resides in the cell identification of the LTE cell and resides in the cell identification corresponding to the downlink carrier wave of the NR cell.
Further embodiments of the base station of the present disclosure are described below in conjunction with fig. 8.
Fig. 8 is a block diagram of some embodiments of a base station of the present disclosure. As shown in fig. 8, the base station 80 of this embodiment includes: the location reporting instruction receiving module 802, the supplemental uplink carrier determining module 804, and the location information reporting module 806 are respectively the same as or similar to the location reporting instruction receiving module 602, the supplemental uplink carrier determining module 604, and the location information reporting module 606 in function. The base station 80 further includes: a resident information acquisition module 808 and a resident information reporting module 810.
The resident information obtaining module 808, after receiving the position reporting control message sent by the core network device, obtains the resident information of the terminal, where the resident information includes: the method comprises the steps of identifying a cell identifier of a downlink cell where a terminal resides, identifying a cell corresponding to at least one SUL carrier where the terminal resides, and identifying residence time corresponding to each SUL carrier.
In the independent networking scenario, the cell identifier of the downlink cell where the terminal resides in the residence information may include: a cell identifier of a new air interface NR downlink cell where the terminal resides; in the non-independent networking scenario, the cell identifier of the downlink cell where the terminal resides in the residence information may include: the cell identity of the LTE cell where the terminal resides, and the cell identity of the NR cell as the primary-secondary cell where the terminal resides.
In some embodiments, the resident information further includes: the terminal does not distinguish the total residence time of the SUL carriers within the entire downlink cell.
In some embodiments, in an independent networking scenario, a residence time corresponding to each SUL carrier in which a terminal resides is determined by the following method: determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier; wherein the time point when the SUL carrier is changed includes: the time point of the base station issuing the switching command to the terminal, the time point of the base station sending a Radio Resource Control (RRC) connection release message to the terminal, the time point of the base station implicitly releasing the resource of the terminal, or the time point of the base station sending a SUL carrier replacing message to the terminal.
The resident information reporting module 810 is configured to send the resident information of the terminal to the network management system, so that the network management system adjusts the switching threshold of the SUL carrier corresponding to the base station according to the resident information of each terminal corresponding to the base station within the preset time.
In some embodiments, the resident information reporting module 810 is configured to send the resident information of the terminal to the network management system and delete the resident information of the terminal stored in the base station when the terminal releases the radio resource control RRC connection or the terminal is handed over to another base station.
In some embodiments, the network management system determines, according to the residence information of each terminal corresponding to the base station within a preset time, an SUL carrier whose average residence time is lower than a preset value; and adjusting the switching threshold corresponding to the SUL carrier with the average residence time lower than the preset value so as to increase the residence time of the SUL carrier.
In some embodiments, the base station 80 further comprises: a context information modification module 812 for checking whether there is a resident information item of the terminal in the context of the terminal; if the resident information item of the terminal exists in the context of the terminal, the base station supplements the resident information of the terminal corresponding to the base station in the resident information item of the terminal, otherwise, the resident information of the terminal corresponding to the base station is added into the context of the terminal as a new resident information item.
In some embodiments, the base station 80 further comprises: and a residence information interaction module 814, configured to send the residence information of the terminal to another base station when the terminal is handed over to another base station.
In an SA scenario, the base station in the above embodiment may be a base station supporting NR, and in an NSA scenario, the base station in the above embodiment may be an LTE base station. Some embodiments of the base station in the NSA scenario are described below in conjunction with fig. 9.
Fig. 9 is a block diagram of some embodiments of a base station of the present disclosure. As shown in fig. 9, the base station 90 of this embodiment includes: a location reporting indication receiving module 902, a supplementary uplink carrier determining module 904, a location information reporting module 906, a resident information acquiring module 908, a resident information reporting module 910, a context information modifying module 912, and a resident information interacting module 914, which are respectively the same as or similar to the location reporting indication receiving module 802, the supplementary uplink carrier determining module 804, the location information reporting module 806, the resident information acquiring module 808, the resident information reporting module 810, the context information modifying module 812, and the resident information interacting module 814 in function. The base station 90 further includes: a resident information reporting indication module 916 and a resident information receiving module 918.
A residence information reporting indication module 916, configured to send residence information report indication information to the NR base station when the cell of the new air interface NR base station is used as a cell in the auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in the auxiliary cell group, and the terminal configures at least one SUL carrier within a coverage area of the NR base station.
A camping information receiving module 918, configured to receive camping information report information of the terminal sent by the NR base station when the resource of the terminal at the NR base station is released, where the camping information report information includes: the NR base station distributes a cell identifier of a main auxiliary cell for the terminal, a cell identifier corresponding to at least one SUL carrier where the terminal resides in the coverage of the NR base station, and residence time corresponding to each SUL carrier.
In some embodiments, the residence time corresponding to each SUL carrier where the terminal resides in the coverage of the NR base station is determined by the following method:
determining the time difference between the changed time point and the added time point of the SUL carrier as the residence time corresponding to the SUL carrier under the condition that the terminal configures a signaling radio bearer (SRB 3); wherein the time point when the SUL carrier is changed includes: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the time point carries the SUL carrier replacement information.
Under the condition that the terminal does not configure a signaling radio bearer SRB3, determining the time difference between the time point of resource change of the terminal at the NR base station and the time point of the NR base station sending a Radio Resource Control (RRC) connection reconfiguration message to the terminal as the residence time corresponding to the SUL carrier; wherein, the time point of the resource change of the terminal at the NR base station comprises: the method comprises the following steps that the NR base station receives a time point of a message which is sent by the LTE base station and used for indicating the release of resources of the terminal at the NR base station, the NR base station prepares to release the resources of the terminal at the NR base station, or the NR base station receives a time point of a message which indicates the replacement of an uplink carrier of the terminal.
In some embodiments, the resident information report indication information includes: and the residence time counting identification bit is used for indicating the NR base station to start counting the residence time corresponding to at least one SUL carrier where the terminal resides.
In some embodiments, the base station 90 further comprises: the configuration information sending module 920 and the NR base station information receiving module 922 have the same or similar functions as the configuration information sending module 708 and the NR base station information receiving module 710, respectively.
The information sending apparatus in the embodiments of the present disclosure, for example, the base station in the foregoing embodiments, may be implemented by various computing devices or computer systems, and is described below with reference to fig. 10 and 11.
Fig. 10 is a block diagram of some embodiments of an information transmitting apparatus of the present disclosure. As shown in fig. 10, the apparatus 100 of this embodiment includes: a memory 1010 and a processor 1020 coupled to the memory 1010, the processor 1020 configured to perform the method of transmitting information in any of the embodiments of the present disclosure based on instructions stored in the memory 1010.
Memory 1010 may include, for example, system memory, fixed non-volatile storage media, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), a database, and other programs.
Fig. 11 is a block diagram of another embodiment of an information transmitting apparatus according to the present disclosure. As shown in fig. 11, the apparatus 110 of this embodiment includes: the memory 1110 and the processor 1120 are similar to the memory 1010 and the processor 1020, respectively. Input-output interfaces 1130, network interfaces 1140, storage interfaces 1150, etc. may also be included. These interfaces 1130, 1140, 1150 and the memory 1110 and the processor 1120 may be connected via a bus 1160, for example. The input/output interface 1130 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 1140 provides a connection interface for various networked devices, such as may connect to a database server or a cloud storage server, etc. The storage interface 1150 provides a connection interface for external storage devices such as an SD card and a usb disk.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (40)

1. An information sending method, comprising:
a first base station receives a position reporting control message sent by core network equipment, wherein the position reporting control message is used for indicating the first base station to report position information of a terminal;
the first base station determines a cell identifier corresponding to a supplementary uplink carrier where the terminal resides and a cell identifier corresponding to a resident downlink carrier when the terminal is configured with a plurality of supplementary uplink carriers;
the first base station reports the location information of the terminal to the core network device, where the location information includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier are used for the core network device to locate the terminal.
2. The information transmitting method as claimed in claim 1, wherein,
the location reporting control message includes: a cell identification list corresponding to a supplementary uplink carrier to be reported;
the determining, by the first base station, a cell identifier corresponding to a supplementary uplink carrier on which the terminal resides when the terminal configures the supplementary uplink carrier includes:
the first base station determines a cell identifier corresponding to a supplementary uplink carrier where the terminal resides, the cell identifier being matched with a cell identifier in the cell identifier list, when the terminal is configured with the supplementary uplink carrier;
the location information includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal resides is matched with the cell identifier in the cell identifier list.
3. The information transmitting method as claimed in claim 1, wherein,
the location reporting control message includes: the starting identification bit is used for indicating whether the position of the supplementary uplink carrier of the terminal is reported or not;
the determining, by the first base station, a cell identifier corresponding to a supplementary uplink carrier on which the terminal resides when the terminal configures the supplementary uplink carrier includes:
and the first base station determines a cell identifier corresponding to the supplementary uplink carrier where the terminal resides when the enabled identifier indicates that the terminal reports the position of the supplementary uplink carrier and the terminal configures the supplementary uplink carrier.
4. The information transmitting method as claimed in claim 1, wherein,
when the first base station supports a non-independent networking mode, the first base station is an LTE base station;
the determining, by the first base station, the cell identifier corresponding to the supplementary uplink carrier where the terminal resides, when the terminal configures dual connectivity and the supplementary uplink carrier, includes:
the first base station sends configuration information to an NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in an auxiliary cell group, and at least one supplementary uplink carrier is deployed within a coverage area of the NR base station, where the configuration information includes: a report type for indicating the time for reporting the position of the supplementary uplink carrier by the NR base station;
the first base station receives a location report message sent by the NR base station at the time of reporting the supplemental uplink carrier location, where the location report message includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal currently resides.
5. The information transmitting method according to claim 4,
the time for reporting the position of the supplementary uplink carrier by the NR base station comprises at least one of the following: and when the supplementary uplink carrier is added to the terminal and the supplementary uplink carrier is changed for the terminal, when the preset type of uplink carrier configured by the terminal is changed into the supplementary uplink carrier, adding the auxiliary carrier of the auxiliary cell group.
6. The information transmitting method according to claim 4,
the cell identifier corresponding to the downlink carrier where the terminal resides includes: the terminal resides in a cell identification of the LTE cell and a cell identification corresponding to a downlink carrier residing in the NR cell.
7. The information transmission method according to claim 1, further comprising:
after receiving the location reporting control message sent by the core network device, the first base station acquires the resident information of the terminal, where the resident information includes: a cell identifier of a downlink cell where the terminal resides, a cell identifier corresponding to at least one supplementary uplink carrier where the terminal resides, and a residence time corresponding to each supplementary uplink carrier;
and the first base station sends the resident information of the terminal to a network management system, so that the network management system adjusts the switching threshold of the supplementary uplink carrier corresponding to the first base station according to the resident information of each terminal corresponding to the first base station in preset time.
8. The information transmitting method as claimed in claim 7, wherein,
the first base station sending the resident information of the terminal to a network management system comprises:
and the first base station sends the resident information of the terminal to the network management system and deletes the resident information of the terminal stored in the first base station under the condition that the terminal releases Radio Resource Control (RRC) connection or the terminal is switched to a second base station.
9. The information transmitting method as claimed in claim 7, wherein,
when the first base station supports a non-independent networking mode, the first base station is an LTE base station;
the first base station acquiring the resident information of the terminal comprises:
the first base station sends resident information report indication information to the NR base station under the condition that a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is added is used as a cell in the auxiliary cell group and the terminal configures at least one supplementary uplink carrier within the coverage range of the NR base station;
the first base station receives, when the terminal releases resources at the NR base station, camping information report information of the terminal sent by the NR base station, where the camping information report information includes: the NR base station allocates a cell identifier of a primary secondary cell to the terminal, a cell identifier corresponding to at least one supplementary uplink carrier where the terminal resides within a coverage area of the NR base station, and a residence time corresponding to each supplementary uplink carrier.
10. The information transmitting method as claimed in claim 9, wherein,
the residence time corresponding to each supplementary uplink carrier where the terminal resides within the coverage of the NR base station is determined by using the following method:
determining a time difference between a time point when the supplementary uplink carrier is changed and a time point when the supplementary uplink carrier is added as a residence time corresponding to the supplementary uplink carrier under the condition that the terminal configures a signaling radio bearer (SRB 3);
wherein the time point when the supplementary uplink carrier is changed comprises: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the RRC connection reconfiguration message carries the information of replacing the supplementary uplink carrier.
11. The information transmitting method as claimed in claim 9, wherein,
the residence time corresponding to each supplementary uplink carrier where the terminal resides within the coverage of the NR base station is determined by using the following method:
under the condition that the terminal does not configure a signaling radio bearer (SRB 3), determining a time difference between a time point of resource change of the NR base station by the terminal and a time point of sending a Radio Resource Control (RRC) connection reconfiguration message to the terminal by the NR base station as a residence time corresponding to the supplementary uplink carrier;
wherein the terminal includes, at a time point when the resource of the NR base station is changed: the NR base station receives a time point of a message sent by the first base station to instruct release of the resource of the terminal at the NR base station, the NR base station prepares to release the resource of the terminal at the NR base station, or the NR base station receives a time point of a message to instruct replacement of an uplink carrier of the terminal.
12. The information transmitting method as claimed in claim 7, wherein,
when the first base station supports an independent networking mode, the residence time corresponding to each supplementary uplink carrier where the terminal resides is determined by adopting the following method:
determining the time difference between the changed time point and the added time point of the supplementary uplink carrier as the residence time corresponding to the supplementary uplink carrier;
wherein the time point when the supplementary uplink carrier is changed comprises: the first base station sends a switching command to the terminal, the first base station sends a Radio Resource Control (RRC) connection release message to the terminal, the first base station implicitly releases the resource of the terminal, or the first base station sends a message of replacing and supplementing uplink carriers to the terminal.
13. The information transmitting method as claimed in claim 7, wherein,
the network management system determines supplementary uplink carriers with average residence time lower than a preset value according to residence information of each terminal corresponding to the first base station within preset time; and adjusting the switching threshold corresponding to the supplementary uplink carrier with the average residence time lower than the preset value so as to increase the residence time of the supplementary uplink carrier.
14. The information transmitting method as claimed in claim 7, wherein,
the first base station checks whether the resident information item of the terminal exists in the context of the terminal;
if the resident information item of the terminal exists in the context of the terminal, the first base station supplements the resident information of the terminal corresponding to the first base station in the existing resident information item of the terminal, otherwise, the resident information of the terminal corresponding to the first base station is added into the context of the terminal as a new resident information item.
15. The information transmission method according to claim 7, further comprising:
and the first base station sends the resident information of the terminal to a second base station under the condition that the terminal is switched to the second base station.
16. The information transmitting method as claimed in claim 7, wherein,
when the first base station supports an independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: a cell identifier of a new air interface NR downlink cell where the terminal resides;
when the first base station supports the non-independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: the cell identifier of the LTE cell where the terminal resides, and the cell identifier of the NR cell where the terminal resides as a primary-secondary cell.
17. The information transmitting method as claimed in claim 7, wherein,
the resident information further includes: the terminal does not distinguish the total residence time of the supplemental uplink carriers in the entire downlink cell.
18. The information transmitting method as claimed in claim 9, wherein,
the resident information report instruction information includes: a dwell time counting flag bit, configured to instruct the NR base station to start counting a dwell time corresponding to at least one supplemental uplink carrier in which the terminal resides.
19. The information transmitting method as claimed in claim 1, wherein,
when the first base station supports an independent networking mode, the first base station is a base station supporting NR, and the base station supporting NR receives a position reporting control message sent by an access and mobility management function (AMF);
and when the first base station supports an independent networking mode, the first base station is an LTE base station, and the LTE base station receives a position reporting control message sent by a Mobile Management Entity (MME).
20. A base station, comprising:
a location reporting indication receiving module, configured to receive a location reporting control message sent by a core network device, where the location reporting control message is used to indicate a base station to report location information of a terminal;
a supplementary uplink carrier determining module, configured to determine, when the terminal is configured with multiple supplementary uplink carriers, a cell identifier corresponding to a supplementary uplink carrier where the terminal resides and a cell identifier corresponding to a downlink carrier where the terminal resides;
a location information reporting module, configured to report location information of the terminal to the core network device, where the location information includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal resides and the cell identifier corresponding to the resident downlink carrier are used for the core network device to locate the terminal.
21. The base station of claim 20, wherein,
the location reporting control message includes: a cell identification list corresponding to a supplementary uplink carrier to be reported;
the supplementary uplink carrier determining module is configured to determine a cell identifier corresponding to a supplementary uplink carrier where the terminal resides, where the supplementary uplink carrier is configured to the terminal;
the location information includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal resides is matched with the cell identifier in the cell identifier list.
22. The base station of claim 20, wherein,
the location reporting control message includes: the starting identification bit is used for indicating whether the position of the supplementary uplink carrier of the terminal is reported or not;
and the supplementary uplink carrier determining module is used for determining a cell identifier corresponding to the supplementary uplink carrier where the terminal resides under the condition that the enabled identification bit represents reporting of the position of the supplementary uplink carrier of the terminal and the terminal is configured with the supplementary uplink carrier.
23. The base station of claim 20, wherein,
when the base station supports an independent networking mode, the base station is an LTE base station;
the LTE base station further comprises:
a configuration information sending module, configured to send configuration information to an NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group or a cell to which the NR base station is to be added is used as a cell in an auxiliary cell group, and the terminal configures at least one supplementary uplink carrier within a coverage area of the NR base station, where the configuration information includes: a report type for indicating the time for reporting the position of the supplementary uplink carrier by the NR base station;
an NR base station information receiving module, configured to receive a location report message sent by the NR base station at the time of reporting the supplemental uplink carrier location, where the location report message includes: and the cell identifier corresponding to the supplementary uplink carrier where the terminal currently resides.
24. The base station of claim 23, wherein the NR base station reports the timing of the supplemental uplink carrier position comprises at least one of: and when the supplementary uplink carrier is added to the terminal, when the supplementary uplink carrier is changed to the terminal, changing the preset type uplink carrier into the configured supplementary uplink carrier, and adding the auxiliary carrier of the auxiliary cell group.
25. The base station of claim 23,
the cell identifier corresponding to the downlink carrier where the terminal resides includes: the terminal resides in a cell identification of the LTE cell and a cell identification corresponding to a downlink carrier residing in the NR cell.
26. The base station of claim 20, further comprising:
a resident information obtaining module, configured to obtain resident information of the terminal after receiving the location reporting control message sent by the core network device, where the resident information includes: a cell identifier of a downlink cell where the terminal resides, a cell identifier corresponding to at least one supplementary uplink carrier where the terminal resides, and a residence time corresponding to each supplementary uplink carrier;
and the resident information reporting module is used for sending the resident information of the terminal to a network management system so that the network management system can adjust the switching threshold of the supplementary uplink carrier corresponding to the base station according to the resident information of each terminal corresponding to the base station in preset time.
27. The base station of claim 26, wherein,
and the resident information reporting module is used for sending the resident information of the terminal to the network management system and deleting the resident information of the terminal stored in the base station under the condition that the terminal releases Radio Resource Control (RRC) connection or the terminal is switched to other base stations.
28. The base station of claim 26, wherein,
when the base station supports an independent networking mode, the base station is an LTE base station;
the LTE base station further comprises:
a resident information reporting indication module, configured to send resident information reporting indication information to the NR base station when a cell of a new air interface NR base station is used as a cell in an auxiliary cell group, or a cell of the NR base station is added as a cell in an auxiliary cell group, and the terminal configures at least one supplementary uplink carrier within a coverage area of the NR base station or changes from a preset type carrier to a configured supplementary uplink carrier;
a camping information receiving module, configured to receive camping information report information of the terminal sent by the NR base station under a condition that the resource of the terminal at the NR base station is released, where the camping information report information includes: the NR base station allocates a cell identifier of a primary secondary cell to the terminal, a cell identifier corresponding to at least one supplementary uplink carrier where the terminal resides within a coverage area of the NR base station, and a residence time corresponding to each supplementary uplink carrier.
29. The base station of claim 28, wherein,
the residence time corresponding to each supplementary uplink carrier where the terminal resides within the coverage of the NR base station is determined by using the following method:
determining a time difference between a time point when the supplementary uplink carrier is changed and a time point when the supplementary uplink carrier is added as a residence time corresponding to the supplementary uplink carrier under the condition that the terminal configures a signaling radio bearer (SRB 3);
wherein the time point when the supplementary uplink carrier is changed comprises: the time point when the NR base station sends a Radio Resource Control (RRC) connection release message to the terminal, the time point when the NR base station implicitly releases the resources of the terminal, or the time point when the NR base station sends an RRC connection reconfiguration message to the terminal, wherein the RRC connection reconfiguration message carries the information of replacing the supplementary uplink carrier.
30. The base station of claim 28, wherein,
the residence time corresponding to each supplementary uplink carrier where the terminal resides within the coverage of the NR base station is determined by using the following method:
under the condition that the terminal does not configure a signaling radio bearer (SRB 3), determining a time difference between a time point of resource change of the NR base station by the terminal and a time point of sending a Radio Resource Control (RRC) connection reconfiguration message to the terminal by the NR base station as a residence time corresponding to the supplementary uplink carrier;
wherein the terminal includes, at a time point when the resource of the NR base station is changed: the NR base station receives a time point of a message sent by the LTE base station to instruct release of the resource of the terminal at the NR base station, the NR base station prepares to release the resource of the terminal at the NR base station, or the NR base station receives a time point of a message to instruct replacement of an uplink carrier of the terminal.
31. The base station of claim 20, wherein,
when the base station supports an independent networking mode, the residence time corresponding to each supplementary uplink carrier where the terminal resides is determined by adopting the following method:
determining the time difference between the changed time point and the added time point of the supplementary uplink carrier as the residence time corresponding to the supplementary uplink carrier;
wherein the time point when the supplementary uplink carrier is changed comprises: the base station sends a switching command to the terminal, sends a Radio Resource Control (RRC) connection release message to the terminal, implicitly releases the resource of the terminal, or sends a message for replacing and supplementing uplink carriers to the terminal.
32. The base station of claim 20, wherein,
the network management system determines supplementary uplink carriers with average residence time lower than a preset value according to residence information of each terminal corresponding to the base station within preset time; and adjusting the switching threshold corresponding to the supplementary uplink carrier with the average residence time lower than the preset value so as to increase the residence time of the supplementary uplink carrier.
33. The base station of claim 20, further comprising:
a context information modification module, configured to check whether a resident information item of the terminal exists in a context of the terminal; if the resident information item of the terminal exists in the context of the terminal, the base station supplements the resident information of the terminal corresponding to the base station in the existing resident information item of the terminal, otherwise, the resident information of the terminal corresponding to the base station is added into the context of the terminal as a new resident information item.
34. The base station of claim 20, further comprising:
and the resident information interaction module is used for sending the resident information of the terminal to other base stations under the condition that the terminal is switched to other base stations.
35. The base station of claim 20, wherein,
when the base station supports an independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: a cell identifier of a new air interface NR downlink cell where the terminal resides;
when the base station supports the non-independent networking mode, the cell identifier of the downlink cell where the terminal resides in the residence information includes: the cell identifier of the LTE cell where the terminal resides, and the cell identifier of the NR cell where the terminal resides as a primary-secondary cell.
36. The base station of claim 20, wherein,
the resident information further includes: the terminal does not distinguish the total residence time of the supplemental uplink carriers in the entire downlink cell.
37. The base station of claim 22, wherein,
the resident information report instruction information includes: a dwell time counting flag bit, configured to instruct the NR base station to start counting a dwell time corresponding to at least one supplemental uplink carrier in which the terminal resides.
38. The base station of claim 20, wherein,
when the base station supports an independent networking mode, the base station is a base station supporting NR, and the position reporting indication receiving module is used for receiving a position reporting control message sent by an access and mobility management function (AMF);
and when the base station supports the independent networking mode, the base station is an LTE base station and receives a position reporting control message sent by a mobile management entity MME.
39. An information transmission apparatus comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the communication method of any of claims 1-19 based on instructions stored in the memory.
40. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 19.
CN201910530582.7A 2019-06-19 2019-06-19 Information transmission method, device, system, base station, and computer-readable storage medium Active CN112118534B (en)

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