CN106899964B - Terminal capability information transmission method and device - Google Patents
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Abstract
The disclosure relates to a terminal capability information transfer method and device. The method comprises the following steps: when the terminal is successfully and initially accessed to the current cell, acquiring terminal capability information supported by the terminal; sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information. The technical scheme simplifies the random access flow, reduces the overhead of air interface signaling, reduces access delay and improves user experience.
Description
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to terminal capability information transfer.
Background
The third Generation Partnership Project (3GPP, the 3rd Generation Partnership Project) defines three major directions for the 5G application scenario: mobile Broadband enhancements (eMBB), large-scale internet of things (mtc), Ultra-Reliable Low latency Communications (URLLC); different solutions can be adopted for different application scenarios and services in the 5G network; the low-delay service aiming at the URLLC scene can reduce the service delay by simplifying the access flow. Random access is a very critical step in a mobile communication system, and is also the last step of establishing a communication link between a terminal and a base station, where a terminal (UE) performs information interaction with the base station through random access to complete subsequent operations, such as call, resource request, data transmission, etc., and the UE realizes uplink time synchronization with the system through random access, and the random access performance directly affects User experience.
In the related art, the random access procedure includes the following four steps: 1) UE sends random access preamble to base station; 2) the base station sends a Random Access Response (RAR) to the UE; the UE receives the RAR message and then obtains uplink time synchronization and uplink resources; 3) the UE sends MSG3 to the base station, and the MSG3 transmits a radio resource control Connection establishment Request (RRC Connection Request); 4) the UE receives a conflict resolution message sent by the terminal, determines whether random access is successful or not according to the conflict resolution message, and the conflict resolution message carries radio resource control Connection Setup (RRC Connection Setup).
Disclosure of Invention
In order to overcome the problems in the related art, embodiments of the present disclosure provide a method and an apparatus for transmitting terminal capability information. The technical scheme is as follows:
according to a first aspect of the embodiments of the present disclosure, a method for transferring terminal capability information is provided, including:
when the terminal is successfully and initially accessed to the current cell, acquiring terminal capability information supported by the terminal;
sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the technical scheme is that when the terminal is successfully and initially accessed to the current cell, the terminal capacity information supported by the terminal is sent to the adjacent cell of the current cell in advance, so that the terminal capacity information supported by the terminal is recorded in the mapping relation of the terminal capacity information of each adjacent cell, and therefore the terminal capacity information supported by the terminal can be obtained in advance by the adjacent cell before the terminal initiates random access in the adjacent cell, therefore, when the terminal initiates random access in the adjacent cell, the adjacent cell judges that the terminal is the terminal supporting the URLLC service capacity according to the terminal capacity information obtained in advance, the terminal adopts a two-step random access process to carry out random access, the adjacent cell directly sends a random access completion message to the terminal, the 5G random access flow is simplified, the air interface signaling overhead is reduced, and the access delay is reduced, the access and the operation of the ultra-low delay service can be supported; thus, user experience can be improved.
In an embodiment, the obtaining terminal capability information supported by the terminal includes:
acquiring terminal capacity information matched with the terminal identifier from the terminal capacity information mapping relation of the current cell according to the terminal identifier; alternatively, the first and second electrodes may be,
and analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the technical scheme provides various implementation modes for acquiring the terminal capability information supported by the terminal, and improves the flexibility and the practicability of scheme implementation; meanwhile, when the base station acquires the terminal capability information matched with the terminal identifier from the terminal capability information mapping relation of the current cell according to the terminal identifier, the terminal does not need to report the terminal capability information in the network access process, and the air interface signaling overhead can be reduced.
In one embodiment, the sending terminal capability information supported by the terminal to the neighboring cells of the current cell includes:
and sending the terminal capability information supported by the terminal to the cell meeting the preset condition in all the adjacent cells of the current cell.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the technical scheme only sends the terminal capability information to part of adjacent cells of the current cell, and can reduce the signaling overhead in the network.
In one embodiment, the method further comprises:
sending a terminal capability information transfer list of the current cell to each adjacent cell;
the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the technical scheme, the neighbor cell can know which neighbor cells of the neighbor cell already know the terminal capability information supported by the terminal according to the terminal capability information transfer list of the current cell and by combining the neighbor cell list of the neighbor cell, and when the neighbor cell needs to transfer the terminal capability information supported by the terminal to the neighbor cell, the neighbor cell does not transfer the terminal capability information supported by the terminal to the neighbor cell but only transfers the terminal capability information supported by the terminal to the neighbor cell which does not know the terminal capability information supported by the terminal, thereby avoiding the repeated transfer of the terminal capability information and reducing the signaling resource consumption.
In one embodiment, the method further comprises:
receiving a random access request message which is sent by the terminal and comprises an identifier of the terminal;
judging whether terminal capability information matched with the terminal identifier exists in the terminal capability information mapping relation of the current cell or not according to the terminal identifier;
and when the terminal capacity information matched with the identifier of the terminal exists in the terminal capacity information mapping relation, sending a random access completion message to the terminal.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: according to the technical scheme, terminal capability information supported by the terminal is obtained in advance, when the terminal initiates random access, the terminal is judged to be the terminal supporting the URLLC service capability according to the pre-obtained terminal capability information, the terminal performs random access in a two-step random access process mode, and a random access completion message is directly issued to the terminal, so that a 5G random access process is simplified, air interface signaling overhead is reduced, and access delay is reduced.
According to a second aspect of the embodiments of the present disclosure, there is provided a terminal capability information transfer apparatus including:
a determining module, configured to determine whether the terminal successfully initially accesses the current cell;
the terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring terminal capability information supported by a terminal when the terminal is determined to be successfully and initially accessed to a current cell;
a first sending module, configured to send terminal capability information supported by the terminal to a neighboring cell of the current cell, so that each neighboring cell records the terminal capability information supported by the terminal in a respective terminal capability information mapping relationship; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
In one embodiment, the obtaining module obtains the terminal capability information matched with the identifier of the terminal from the terminal capability information mapping relation of the current cell according to the identifier of the terminal; or analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
In one embodiment, the first sending module sends the terminal capability information supported by the terminal to a cell satisfying a preset condition among all neighboring cells of the current cell.
In one embodiment, the apparatus further comprises:
a second sending module, configured to send a terminal capability information delivery list of the current cell to each neighboring cell; the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
In one embodiment, the apparatus further comprises:
a receiving module, configured to receive a random access request message that includes an identifier of the terminal and is sent by the terminal;
a judging module, configured to judge whether terminal capability information matching the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell according to the identifier of the terminal;
and the third sending module is used for sending a random access completion message to the terminal when the terminal capability information matched with the identifier of the terminal exists in the terminal capability information mapping relation.
According to a third aspect of the embodiments of the present disclosure, there is provided a terminal capability information transfer apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the terminal is successfully and initially accessed to the current cell, acquiring terminal capability information supported by the terminal;
sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 4a is a scene diagram illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 4b is a flowchart illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 4c is a scene diagram illustrating a terminal capability information delivery method according to an exemplary embodiment.
Fig. 5 is a block diagram illustrating a terminal capability information transfer apparatus according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a terminal capability information transfer apparatus according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating a terminal capability information transfer apparatus according to an exemplary embodiment.
Fig. 8 is a block diagram illustrating a terminal capability information transfer apparatus according to an exemplary embodiment.
Fig. 9 is a block diagram illustrating a terminal capability information transfer apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the related art, the random access procedure includes the following four steps: 1) UE sends random access preamble to base station; 2) the base station sends a random access response to the UE; the UE receives the RAR message and then obtains uplink time synchronization and uplink resources; 3) the UE sends MSG3 to the base station, and the MSG3 transmits a radio resource control connection establishment request; 4) and the UE receives a conflict solution message sent by the terminal, judges whether the random access is successful or not according to the conflict solution message, and establishes the wireless resource control connection carried in the conflict solution message. However, the low latency service in URLLC scenario requires the mobile communication network to be able to support the access and operation of the ultra-low latency service, and for this reason, it is desirable to reduce the traffic latency by simplifying the access procedure in the related art.
In order to solve the above problem, an embodiment of the present disclosure provides a method for transferring terminal capability information, including: when the terminal is successfully and initially accessed to the current cell, acquiring terminal capability information supported by the terminal; sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information. The technical scheme provided by the embodiment of the disclosure can be used for transmitting the UE capability to the adjacent cell in advance, so as to simplify the 5G random access process, reduce the overhead of air interface signaling, reduce the access delay and support the access and operation of ultra-low delay service. The technical solution relates to a base station, such as an evolved node b (eNB), or an apparatus, device or system for performing the function of the eNB in a communication network.
Fig. 1 is a flowchart illustrating a method for transferring terminal capability information according to an exemplary embodiment, where an executing subject of the method may be a base station, as shown in fig. 1, the method includes the following steps 101 and 102:
in step 101, when it is determined that the terminal has successfully initially accessed to the current cell, terminal capability information supported by the terminal is obtained.
Illustratively, the terminal capability information at least includes low-latency service supporting capability information; the terminal in the embodiment has the capability of supporting the URLLC service. The terminal initiates an initial access process in the current cell; when the base station to which the current cell belongs determines that the terminal is successfully and initially accessed to the current cell, the base station acquires the terminal capability information supported by the terminal.
For example, an implementation manner of the base station acquiring the terminal capability information supported by the terminal may include:
in the method 1, a base station or a current cell acquires terminal capability information supported by a terminal which is successfully and initially accessed to the adjacent cell from the adjacent cell in advance, and stores or maintains a terminal capability information mapping relation of the current cell; and the base station acquires the terminal capability information matched with the identifier of the terminal from the terminal capability information mapping relation of the current cell according to the identifier of the terminal.
When the base station acquires the terminal capability information supported by the terminal in the mode 1, the terminal does not need to report the terminal capability information in the network access process, and the air interface signaling overhead can be reduced.
For example, based on the method 1, a base station or a current cell acquires terminal capability information supported by a terminal that has successfully initially accessed to an adjacent cell from the adjacent cell in advance, and stores or maintains a mapping relationship of the terminal capability information of the current cell; before executing step 101, when a terminal initiates random access in a current cell, a base station receives a random access request message including an identifier of the terminal sent by the terminal, for example, the random access request message may include information such as a random access preamble, and according to the identifier of the terminal, determines whether the identifier of the terminal exists in a terminal capability information mapping relationship of the current cell or whether terminal capability information matching the identifier of the terminal exists; when the base station judges that the terminal capability information matched with the terminal identifier exists in the terminal capability information mapping relation, the base station judges that the terminal is a terminal supporting URLLC service capability according to the terminal capability information supported by the terminal, and the current cell acquires the terminal capability information in advance, wherein the terminal adopts a two-step random access process to carry out random access; illustratively, the random access procedure is two steps, that is, the terminal sends the random access preamble and the RRC connection establishment request to the base station in the same message; after checking the random access preamble and the terminal capability information, the base station directly sends a random access completion message to the terminal; the two-step random access process greatly reduces the overhead of air interface signaling, simplifies the random access steps and reduces the access delay.
In the mode 2, after the terminal is initially accessed to the current cell, the terminal sends a network access request message to the base station when the terminal is accessed to the network for the first time; the network access request message can carry terminal capability information supported by the terminal; and the base station analyzes the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal. The network entry request message may be, for example, an attach request message, or a location area update message, etc.
In step 102, terminal capability information supported by the terminal is sent to the neighboring cells of the current cell, so that each neighboring cell records the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
For example, the neighbor cells of the current cell may be one or more; when a plurality of adjacent cells of the current cell are available, the base station can send terminal capability information supported by the terminal to all the adjacent cells of the current cell or only send the terminal capability information to part of the adjacent cells of the current cell when the base station determines that the terminal is successfully and initially accessed to the current cell, so that the signaling overhead in the network can be reduced; for example, the base station sends the terminal capability information supported by the terminal only to the cell meeting the preset condition in all the adjacent cells of the current cell; for example, the cells satisfying the preset condition among all the neighboring cells may be, for example, the same-frequency neighboring cell of the current cell, a neighboring cell of a specific frequency, a neighboring cell of a specific wireless access system, a neighboring cell of a same base station, a neighboring cell of a different base station, a neighboring cell within a certain distance from the base station, a neighboring cell having a signal strength greater than a predetermined strength, an access cell predicted by the base station and likely to enter the base station, and the like. For example, when the current cell and the neighboring cell belong to two different base stations, respectively, the base station to which the current cell belongs may transfer terminal capability information supported by the terminal via a communication interface between the two base stations.
For example, the base station sends the terminal capability information supported by the terminal to the neighboring cell of the current cell, and also sends the terminal capability information transfer list of the current cell to the neighboring cell of the current cell; the terminal capability information delivery list of the current cell is used for recording the identifiers of all cells which can receive the terminal capability information supported by the terminal and sent by the current cell under normal conditions, namely, the terminal capability information delivery list of the current cell records the cell identifiers of all receiving cells of the terminal capability information supported by the terminal sent by the base station; the neighbor cell can know which neighbor cells of the neighbor cell already know the terminal capability information supported by the terminal according to the terminal capability information transfer list of the current cell and by combining the neighbor cell list of the neighbor cell, and when the neighbor cell needs to transfer the terminal capability information supported by the terminal to the neighbor cells, the neighbor cell does not transfer the terminal capability information supported by the terminal to the neighbor cells which already know the terminal capability information supported by the terminal, but only transfers the terminal capability information supported by the terminal to the neighbor cells which do not know the terminal capability information supported by the terminal, thereby avoiding the repeated transfer of the terminal capability information and reducing the signaling resource consumption.
Illustratively, a base station sends terminal capability information supported by a terminal to a neighboring cell of a current cell; after receiving terminal capability information supported by a terminal sent by a current cell, an adjacent cell judges whether a terminal identifier of the terminal and the terminal capability information supported by the terminal are recorded in a terminal capability information mapping relation of the adjacent cell; if so, not modifying the terminal capability information mapping relation of the adjacent cells; if not, recording the mapping relation between the terminal identification of the terminal and the terminal capability information supported by the terminal in the terminal capability information mapping relation of the adjacent cell.
For example, an effective time limit for storing a record may be set separately for each record in the terminal capability information mapping relationship of the cell, and when the effective time limit of a record expires, the record is automatically deleted from the terminal capability information mapping relationship, so as to reduce the storage burden caused by the excessively large content of the terminal capability information mapping relationship record.
For example, after the neighboring cell acquires the terminal capability information supported by the terminal from the current cell or another cell and records the terminal capability information in the terminal capability information mapping relationship of the neighboring cell, when the terminal initiates an initial access process in the neighboring cell, the terminal sends a random access request message including an identifier of the terminal to a base station to which the neighboring cell belongs, for example, the random access request message may include information such as a random access preamble; when the adjacent cell or the base station to which the adjacent cell belongs receives the random access request message sent by the terminal, judging whether the terminal identification exists in the terminal capacity information mapping relation of the adjacent cell or whether the terminal capacity information matched with the terminal identification exists or not according to the terminal identification; if the terminal capacity information matched with the terminal identifier exists in the terminal capacity information mapping relation of the adjacent cell, judging that the terminal is a terminal supporting URLLC service capacity according to the terminal capacity information supported by the terminal, wherein the adjacent cell acquires the terminal capacity information in advance, and the terminal performs random access in a two-step random access process; the terminal sends the random access preamble and the RRC connection establishment request to the base station in the same message; after checking the random access preamble and the terminal capability information, the base station directly sends a random access completion message to the terminal; the two-step random access process greatly reduces the overhead of air interface signaling, simplifies the random access steps and reduces the access delay.
Based on the four-step random access process, the terminal transmits partial UE capability information, such as capability information related to high-speed packet access characteristics, to the target cell when the target cell initiates random access, and the target cell can reasonably decide whether to allow the terminal access and the access mode in the random access process after obtaining the capability information; after the terminal finishes accessing, the terminal transfers all UE capability information of the terminal to the target cell by means of signaling such as a wireless resource connection establishment completion message. The UE capability information may include radio access related capability and core network related capability information; such as access version, terminal class (UE-Category), radio parameters, radio capabilities, etc. Different terminals can have different UE capabilities, and the network side selects a suitable access mode and configuration for transmitting data or signaling resources for the terminal according to the UE capabilities supported by the terminal and the UE capabilities currently supported by the network side. Since the UE capabilities are different and have a large difference, the network side needs to know the UE capabilities to make an accurate decision when making various event decisions or executing various algorithms, which requires that the UE capabilities be reported to the network side in some way and synchronization is achieved. However, in the related art, when the UE does not initiate the random access in the neighboring cell of the serving cell, the neighboring cell of the serving cell cannot acquire the UE capability information, and the UE reports the UE capability information to the neighboring cell only when the UE initiates the random access in the neighboring cell.
The technical scheme provided by the embodiment of the disclosure is that when it is determined that a terminal is successfully and initially accessed to a current cell, terminal capability information supported by the terminal is sent to adjacent cells of the current cell in advance, so that each adjacent cell records the terminal capability information supported by the terminal in a respective terminal capability information mapping relation, and therefore, before the terminal initiates random access in the adjacent cell, the adjacent cell can acquire the terminal capability information supported by the terminal in advance, so that when the terminal initiates random access in the adjacent cell, the adjacent cell judges that the terminal is a terminal supporting URLLC service capability according to the terminal capability information acquired in advance, and the terminal performs random access in a two-step random access process, and directly sends a random access completion message to the terminal, thereby simplifying a 5G random access process and reducing air interface signaling overhead, the access delay is reduced, and the access and the operation of the ultra-low delay service can be supported; thus, user experience can be improved.
In a possible implementation manner, the step of acquiring the terminal capability information supported by the terminal in step 101 shown in fig. 1 may be implemented as at least the following manner 1 or manner 2:
mode 1, according to the identifier of the terminal, acquiring terminal capability information matched with the identifier of the terminal from the terminal capability information mapping relation of the current cell;
illustratively, a base station or a current cell acquires terminal capability information supported by a terminal which has successfully and initially accessed to the neighboring cell from the neighboring cell in advance, and stores or maintains a terminal capability information mapping relationship of the current cell; and the base station acquires the terminal capability information matched with the identifier of the terminal from the terminal capability information mapping relation of the current cell according to the identifier of the terminal.
And in the mode 2, the network access request message sent by the terminal is analyzed, and the terminal capability information supported by the terminal is acquired.
Illustratively, after a terminal initially accesses a current cell, when the terminal accesses a network for the first time, a network access request message is sent to a base station; the network access request message can carry terminal capability information supported by the terminal; and the base station analyzes the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal. The network entry request message may be, for example, an attach request message, or a location area update message, etc.
In a possible implementation manner, the step of sending the terminal capability information supported by the terminal to the neighboring cell of the current cell in step 102 shown in fig. 1 may be implemented at least as: sending terminal capability information supported by a terminal to all adjacent cells of a current cell; or, sending the terminal capability information supported by the terminal to the cell satisfying the preset condition in all the adjacent cells of the current cell, so as to reduce the signaling overhead in the network; for example, the base station sends the terminal capability information supported by the terminal only to the cell meeting the preset condition in all the adjacent cells of the current cell; for example, the cells satisfying the preset condition among all the neighboring cells may be, for example, the same-frequency neighboring cell of the current cell, a neighboring cell of a specific frequency, a neighboring cell of a specific wireless access system, a neighboring cell of a same base station, a neighboring cell of a different base station, a neighboring cell within a certain distance from the base station, a neighboring cell having a signal strength greater than a predetermined strength, an access cell predicted by the base station and likely to enter the base station, and the like. For example, when the current cell and the neighboring cell belong to two different base stations, respectively, the base station to which the current cell belongs may transfer terminal capability information supported by the terminal via a communication interface between the two base stations.
In one possible implementation manner, the terminal capability information delivery method related by the present disclosure may include: sending a terminal capability information transfer list of the current cell to each adjacent cell; the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
For example, the terminal capability information delivery list of the current cell records the cell identifier of each receiving cell of the terminal capability information supported by the base station sending terminal; the neighbor cell can know which neighbor cells of the neighbor cell already know the terminal capability information supported by the terminal according to the terminal capability information transfer list of the current cell and by combining the neighbor cell list of the neighbor cell, and when the neighbor cell needs to transfer the terminal capability information supported by the terminal to the neighbor cells, the neighbor cell does not transfer the terminal capability information supported by the terminal to the neighbor cells which already know the terminal capability information supported by the terminal, but only transfers the terminal capability information supported by the terminal to the neighbor cells which do not know the terminal capability information supported by the terminal, thereby avoiding the repeated transfer of the terminal capability information and reducing the signaling resource consumption.
In a possible implementation manner, as shown in fig. 2, the method for transferring terminal capability information according to the present disclosure may further include steps 201 and 203:
in step 201, a random access request message including an identifier of the terminal sent by the terminal is received.
Illustratively, a base station or a current cell acquires terminal capability information supported by a terminal which has successfully and initially accessed to the neighboring cell from the neighboring cell in advance, and stores or maintains a terminal capability information mapping relationship of the current cell; before performing step 101, when a terminal initiates a random access in a current cell, a base station receives a random access request message including an identifier of the terminal sent by the terminal, for example, the random access request message may include information such as a random access preamble.
In step 202, it is determined whether terminal capability information matching the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell according to the identifier of the terminal.
Illustratively, according to the identifier of the terminal, it is determined whether the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell, or whether terminal capability information matched with the identifier of the terminal exists.
In step 203, when there is terminal capability information matching with the identifier of the terminal in the terminal capability information mapping relationship, a random access completion message is sent to the terminal.
Illustratively, when the base station determines that terminal capability information matched with the identifier of the terminal exists in the terminal capability information mapping relation, the base station determines that the terminal is a terminal supporting the URLLC service capability according to the terminal capability information supported by the terminal, and the current cell has previously acquired the terminal capability information, and the terminal performs random access in a two-step random access process; illustratively, the random access procedure is two steps, that is, the terminal sends the random access preamble and the RRC connection establishment request to the base station in the same message; after checking the random access preamble and the terminal capability information, the base station directly sends a random access completion message to the terminal; the two-step random access process greatly reduces the overhead of air interface signaling, simplifies the random access steps and reduces the access delay.
The implementation is described in detail below by way of several embodiments.
Fig. 3 is a flow chart illustrating a method of terminal capability information delivery, which is implemented by a base station, according to an example embodiment; as shown in fig. 3, the method comprises the steps of:
in step 301, a random access request message including an identifier of the terminal sent by the terminal is received.
In step 302, it is determined whether terminal capability information matching the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell according to the identifier of the terminal.
In step 303, when there is terminal capability information matching the identifier of the terminal in the terminal capability information mapping relationship, a random access completion message is sent to the terminal.
In step 304, when it is determined that the terminal is successfully and initially accessed to the current cell, the terminal capability information matched with the identifier of the terminal is obtained from the terminal capability information mapping relationship of the current cell according to the identifier of the terminal.
For example, when it is determined that the terminal successfully initially accesses the current cell, the terminal capability information supported by the terminal may be obtained by analyzing a network access request message sent by the terminal.
In step 305, terminal capability information supported by the terminal is sent to a cell satisfying a preset condition among all neighboring cells of the current cell, and a terminal capability information delivery list of the current cell is sent, so that each neighboring cell records the terminal capability information supported by the terminal in its respective terminal capability information mapping relationship.
Illustratively, the terminal capability information mapping relationship is used for recording a mapping relationship between a terminal identifier and terminal capability information; and the terminal capability information transmission list of the current cell is used for recording the identification of each cell which receives the terminal capability information supported by the terminal and sent by the current cell.
The technical scheme provided by the embodiment of the disclosure is that when it is determined that a terminal is successfully and initially accessed to a current cell, terminal capability information supported by the terminal is sent to adjacent cells of the current cell in advance, so that each adjacent cell records the terminal capability information supported by the terminal in a respective terminal capability information mapping relation, and therefore, before the terminal initiates random access in the adjacent cell, the adjacent cell can acquire the terminal capability information supported by the terminal in advance, so that when the terminal initiates random access in the adjacent cell, the adjacent cell judges that the terminal is a terminal supporting URLLC service capability according to the terminal capability information acquired in advance, and the terminal performs random access in a two-step random access process, and directly sends a random access completion message to the terminal, thereby simplifying a 5G random access process and reducing air interface signaling overhead, the access delay is reduced, and the access and the operation of the ultra-low delay service can be supported; thus, user experience can be improved.
As a possible embodiment, a scheme for transferring UE capability over 5G air interface is provided herein, in this scheme, considering that 5G New Radio related standardization is being performed in 3GPP, for the characteristics of 5G, some changes should be made by a network to transfer UE capability. The neighboring cell acquires the UE capability in advance, and may perform some preparation work in advance to simplify the random access of the UE, that is: the serving cell transfers the UE capability to the neighbor cell in advance to simplify the 5G random access procedure.
For the case that the serving cell and the neighboring cell belong to the same base station, in order to simplify the 5G random access procedure, after the UE is registered in the serving cell, the base station (gNB) of the serving cell shares the UE capability information with the neighboring cell of the same base station, which specifically includes: referring to fig. 4a and 4b, after the UE initiates access in the cell 1 of the base station 1 and succeeds, the UE sends UE capability information to the base station; step 401, cell 1 receives UE capability reported by UE through random access; step 402, base station 1 transmits the UE capability to cell 2 and cell 3; after receiving the request, the base station 1 transfers the copy to the management modules of the cell 2 and the cell 3 (i.e. if the UE accesses the cell 2 and sends the receiving party of the capability information); step 403, cell 2 and cell 3 store the UE capabilities respectively. Thus, when the UE moves to the cell 2 or the cell 3, the base station knows the capability information of the UE before initiating the access, and prepares in advance on the aspect of wireless resource management (a reservation module, an access module and the like); step 404, judging whether the UE enters a cell 2 or a cell 3 after moving out of the cell 1; if the UE moves out of cell 1 and then enters cell 2 or cell 3, go to step 405; otherwise go to step 406; step 405, cell 2 or cell 3 confirms the UE capability; step 406, the UE enters other cells, the other cells do not transfer the UE capability to the cells 2 and 3, the other cells transfer the UE capability to the neighboring cells of the other cells, and the cells 2 and 3 delete the stored UE capability.
For the situation that the serving cell and the neighboring cell belong to different base stations, the base station of the serving cell transfers the UE capability information to the base station of the neighboring cell through a communication interface between the base stations, which specifically includes: referring to fig. 4c, for the case of crossing base stations, after the UE accesses the cell 1 of the base station 1, the UE sends the UE capability information to the base station 2, and after receiving the UE capability information, the base station 2 copies the UE capability information and transfers the UE capability information to the cell 5 and its management module (i.e., if the UE accesses the cell 5 and sends the receiver of the capability information). Thus, when the UE moves to cell 5, the gNB knows the UE capability information before the UE initiates access, and prepares in advance for radio resource management (reservation module, access module, etc.).
The UE capability transfer mechanism provided by the technical scheme provided by the embodiment of the disclosure can simplify the random access process, so that the base station has more flexibility and timeliness for reducing time delay, and the user experience is improved.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 5 is a block diagram illustrating a terminal capability information delivery apparatus according to an exemplary embodiment; the apparatus may be implemented in various ways, for example, with all components of the apparatus being implemented in a base station, or with components of the apparatus being implemented in a coupled manner on the base station side; the apparatus may implement the method related to the present disclosure by software, hardware, or a combination of both, as shown in fig. 5, the terminal capability information delivery apparatus includes: a determining module 501, an obtaining module 502 and a first sending module 503, wherein:
the determining module 501 is configured to determine whether the terminal has successfully and initially accessed to the current cell;
the obtaining module 502 is configured to obtain terminal capability information supported by a terminal when it is determined that the terminal has successfully initially accessed to a current cell;
the first sending module 503 is configured to send terminal capability information supported by the terminal to neighboring cells of the current cell, so that each neighboring cell records the terminal capability information supported by the terminal in a respective terminal capability information mapping relationship; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
The terminal capability information transmission apparatus provided by the embodiment of the present disclosure determines, by a configuration determining module 501, whether a terminal is successfully and initially accessed to a current cell; the obtaining module 502 obtains terminal capability information supported by a terminal when it is determined that the terminal is successfully and initially accessed to a current cell; the first sending module 503 sends the terminal capability information supported by the terminal to the neighboring cells of the current cell, so that each of the neighboring cells records the terminal capability information supported by the terminal in the terminal capability information mapping relationship, thereby sending the terminal capability information supported by the terminal to the neighboring cells of the current cell in advance when it is determined that the terminal is successfully and initially accessed to the current cell, so that each of the neighboring cells records the terminal capability information supported by the terminal in the terminal capability information mapping relationship, which realizes that the neighboring cells can obtain the terminal capability information supported by the terminal in advance before the terminal initiates random access in the neighboring cells, so that when the terminal initiates random access in the neighboring cells, the neighboring cells judge that the terminal is a terminal supporting URLLC service capability according to the pre-obtained terminal capability information, the terminal adopts a two-step random access process to carry out random access, and the adjacent cells directly issue a random access completion message to the terminal, so that the 5G random access process is simplified, the air interface signaling overhead is reduced, the access delay is reduced, and the access and the operation of ultra-low delay service can be supported; thus, user experience can be improved.
In a possible implementation manner, the obtaining module 502 obtains, according to the identifier of the terminal, terminal capability information matched with the identifier of the terminal from the terminal capability information mapping relationship of the current cell; or analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
In a possible implementation manner, the first sending module 503 sends the terminal capability information supported by the terminal to a cell that satisfies a preset condition among all neighboring cells of the current cell.
In one possible implementation, as shown in fig. 6, the terminal capability information delivery apparatus shown in fig. 5 may further include:
the second sending module 601 is configured to send a terminal capability information delivery list of the current cell to each of the neighboring cells; the terminal capability information delivery list of the current cell is used for recording the identification of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
In one possible implementation, as shown in fig. 7, the terminal capability information delivery apparatus shown in fig. 5 may further include: a receiving module 701, a determining module 702, and a third sending module 703, wherein:
the receiving module 701 is configured to receive a random access request message sent by the terminal and including an identifier of the terminal;
the determining module 702 is configured to determine whether terminal capability information matching the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell according to the identifier of the terminal;
the third sending module 703 is configured to send a random access completion message to the terminal when there is terminal capability information matching the identifier of the terminal in the terminal capability information mapping relationship.
Fig. 8 is a block diagram illustrating a terminal capability information transfer apparatus 800 according to an exemplary embodiment, and the terminal capability information transfer apparatus 800 may be implemented in various ways, such as implementing all components of the apparatus in a base station or implementing the components of the apparatus in a coupled manner at the base station side; the terminal capability information delivery apparatus 800 includes:
a processor 801;
a memory 802 for storing processor-executable instructions;
wherein the processor 801 is configured to:
when the terminal is successfully and initially accessed to the current cell, terminal capability information supported by the terminal is acquired;
sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; and the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information.
In one embodiment, the processor 801 may be further configured to:
acquiring terminal capacity information matched with the terminal identifier from the terminal capacity information mapping relation of the current cell according to the terminal identifier; alternatively, the first and second electrodes may be,
and analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
In one embodiment, the processor 801 may be further configured to:
and sending the terminal capability information supported by the terminal to the cell meeting the preset condition in all the adjacent cells of the current cell.
In one embodiment, the processor 801 may be further configured to:
sending a terminal capability information transfer list of the current cell to each adjacent cell;
the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
In one embodiment, the processor 801 may be further configured to:
receiving a random access request message which is sent by the terminal and comprises an identifier of the terminal;
judging whether terminal capability information matched with the terminal identifier exists in the terminal capability information mapping relation of the current cell or not according to the terminal identifier;
and when the terminal capacity information matched with the identifier of the terminal exists in the terminal capacity information mapping relation, sending a random access completion message to the terminal.
The terminal capability information transfer apparatus provided in the foregoing embodiment of the present disclosure, when it is determined that the terminal is successfully and initially accessed to the current cell, sends the terminal capability information supported by the terminal to the neighboring cell of the current cell in advance, so that each neighboring cell records the terminal capability information supported by the terminal in the terminal capability information mapping relationship thereof, which achieves that the neighboring cell can already obtain the terminal capability information supported by the terminal in advance before the terminal initiates random access in the neighboring cell, so that, when the terminal initiates random access in the neighboring cell, the neighboring cell determines that the terminal is a terminal supporting URLLC service capability according to the terminal capability information obtained in advance, and the terminal performs random access in a two-step random access process, and the neighboring cell directly issues a random access completion message to the terminal, thereby simplifying a 5G random access process, the overhead of air interface signaling is reduced, the access delay is reduced, and the access and the operation of ultra-low delay service can be supported; thus, user experience can be improved.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 9 is a block diagram illustrating a terminal capability information delivery apparatus according to an exemplary embodiment. For example, the terminal capability information delivery apparatus 900 may be provided as a server. The terminal capability information transfer apparatus 900 comprises a processing component 902 further comprising one or more processors and memory resources, represented by memory 903, for storing instructions, e.g. applications, executable by the processing component 902. The application programs stored in memory 903 may include one or more modules that each correspond to a set of instructions. Further, the processing component 902 is configured to execute instructions to perform the above-described methods.
The terminal capability information delivery apparatus 900 may further include a power supply component 906 configured to perform power management of the terminal capability information delivery apparatus 900, a wired or wireless network interface 905 configured to connect the terminal capability information delivery apparatus 900 to a network, and an input/output (I/O) interface 908. The terminal capability information transfer means 900 may operate based on an operating system stored in the memory 903, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. A method for transferring terminal capability information, comprising:
when the base station determines that the terminal is successfully and initially accessed to the current cell, the base station acquires terminal capability information supported by the terminal;
the base station sends terminal capability information supported by the terminal to the adjacent cells of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the mapping relation of the terminal capability information; the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information;
the method further comprises the following steps:
the base station receives a random access request message which is sent by the terminal and comprises an identifier of the terminal;
the base station judges whether terminal capability information matched with the identifier of the terminal exists in the terminal capability information mapping relation of the current cell or not according to the identifier of the terminal;
and the base station sends a random access completion message to the terminal when the terminal capability information matched with the identifier of the terminal exists in the terminal capability information mapping relation.
2. The method of claim 1, wherein the obtaining terminal capability information supported by a terminal comprises:
acquiring terminal capacity information matched with the terminal identifier from the terminal capacity information mapping relation of the current cell according to the terminal identifier; alternatively, the first and second electrodes may be,
and analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
3. The method of claim 1, wherein the sending terminal capability information supported by the terminal to the neighboring cells of the current cell comprises:
and sending the terminal capability information supported by the terminal to the cell meeting the preset condition in all the adjacent cells of the current cell.
4. The method of claim 1, further comprising:
sending a terminal capability information transfer list of the current cell to each adjacent cell;
the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
5. A terminal capability information transfer apparatus, comprising:
a determining module, configured to determine whether the terminal successfully initially accesses the current cell;
the terminal comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring terminal capability information supported by a terminal when the terminal is determined to be successfully and initially accessed to a current cell;
a first sending module, configured to send terminal capability information supported by the terminal to a neighboring cell of the current cell, so that each neighboring cell records the terminal capability information supported by the terminal in a respective terminal capability information mapping relationship; the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information;
the device further comprises:
a receiving module, configured to receive a random access request message that includes an identifier of the terminal and is sent by the terminal;
a judging module, configured to judge whether terminal capability information matching the identifier of the terminal exists in the terminal capability information mapping relationship of the current cell according to the identifier of the terminal;
and the third sending module is used for sending a random access completion message to the terminal when the terminal capability information matched with the identifier of the terminal exists in the terminal capability information mapping relation.
6. The apparatus of claim 5, wherein the obtaining module obtains the terminal capability information matching the identifier of the terminal from the terminal capability information mapping relationship of the current cell according to the identifier of the terminal; or analyzing the network access request message sent by the terminal to acquire the terminal capability information supported by the terminal.
7. The apparatus of claim 5, wherein the first sending module sends the terminal capability information supported by the terminal to a cell satisfying a preset condition in all neighboring cells of the current cell.
8. The apparatus of claim 5, further comprising:
a second sending module, configured to send a terminal capability information delivery list of the current cell to each neighboring cell; the terminal capability information delivery list of the current cell is used for recording the identifier of each cell receiving the terminal capability information supported by the terminal sent by the current cell.
9. A terminal capability information transfer apparatus, comprising:
a processor;
a memory for storing a processor executable computer program;
wherein the computer program is capable of realizing the following steps when executed by a processor:
when the terminal is successfully and initially accessed to the current cell, acquiring terminal capability information supported by the terminal;
sending terminal capability information supported by the terminal to the adjacent cell of the current cell so as to enable each adjacent cell to record the terminal capability information supported by the terminal in the respective terminal capability information mapping relation; the terminal capacity information mapping relation is used for recording the mapping relation between the terminal identification and the terminal capacity information;
the computer program when executed by a processor is further capable of performing the steps of:
receiving a random access request message which is sent by the terminal and comprises an identifier of the terminal;
judging whether terminal capability information matched with the terminal identifier exists in the terminal capability information mapping relation of the current cell or not according to the terminal identifier;
and when the terminal capacity information matched with the identifier of the terminal exists in the terminal capacity information mapping relation, sending a random access completion message to the terminal.
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