CN109644368B - Wireless communication method and terminal equipment - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
Abstract
The embodiment of the application provides a wireless communication method and terminal equipment, and the terminal equipment can control the sending of a system information request of an RRC layer based on a timer, so that frequent scheduling of the system information request of the RRC layer is avoided, and uplink channel congestion is avoided. The method comprises the following steps: the terminal equipment receives configuration information sent by the network equipment, wherein the configuration information is used for indicating the duration of the timer; the terminal device starts the timer when generating a first system information request at the RRC layer and submitting the first system information request to the MAC layer.
Description
Technical Field
The present application relates to the field of communications, and more particularly, to a method and a terminal device for wireless communication.
Background
In a New Radio interface (5-Generation New Radio, 5G NR) of the fifth Generation mobile communication technology, a System Information (SI) request triggered by a terminal device at a Radio Resource Control (RRC) layer is autonomously generated by the terminal device, however, a mechanism for limiting a transmission frequency is not introduced at present, so that a situation that the SI request at the RRC layer is excessively frequent may occur, which may cause congestion of an uplink channel of a network device (e.g., a base station).
Disclosure of Invention
The embodiment of the application provides a wireless communication method and terminal equipment, and the terminal equipment can control the sending of a system information request of an RRC layer based on a timer, so that frequent scheduling of the system information request of the RRC layer is avoided, and uplink channel congestion is avoided.
In a first aspect, an embodiment of the present application provides a method for wireless communication, including
The terminal equipment receives configuration information sent by the network equipment, wherein the configuration information is used for indicating the duration of the timer;
the terminal device generates a first system information request at an RRC layer, and starts the timer when submitting the first system information request to a Media Access Control (MAC) layer.
Therefore, in the method for wireless communication according to the embodiment of the present application, the terminal device starts the timer when generating the first system information request in the RRC layer and submitting the first system information request to the MAC layer, so that the terminal device can control the sending of the system information request in the RRC layer based on the timer, thereby avoiding frequent scheduling of the system information request in the RRC layer and avoiding uplink channel congestion.
Optionally, in an implementation manner of the first aspect, the method further includes:
the terminal equipment generates a second system information request in the time length of the timer at the RRC layer and reserves the second system information request at the RRC layer;
the terminal device submits the second system information request to the MAC layer upon expiration of the timer.
Optionally, in an implementation manner of the first aspect, the method further includes:
the terminal equipment acquires the system information requested by the first system information request within the duration of the timer;
the terminal device stops the timer.
Optionally, in an implementation manner of the first aspect, the method further includes:
the terminal device starts the timer when the RRC layer generates a third system information request, where the third system information request is the first system information request generated by the terminal device after the timer is stopped.
Optionally, in an implementation manner of the first aspect, the method further includes:
the terminal equipment generates a fourth system information request in the time length of the timer at an RRC layer and reserves the fourth system information request at the RRC layer;
after generating the fourth system information request, the terminal device obtains the system information requested by the first system information request within the duration of the timer;
the terminal device stops the timer and deletes the fourth system information request.
Optionally, in an implementation manner of the first aspect, the method further includes:
the terminal device starts the timer when the RRC layer generates a fifth system information request, where the fifth system information request is the first system information request generated by the terminal device after the timer is stopped.
Optionally, in an implementation manner of the first aspect, the acquiring, by the terminal device, the system information requested by the first system information request within a duration of the timer includes:
the terminal device obtains the system information requested by the first system information request by reading the system information block, or
The terminal device receives the RRC message sent by the network device for indicating the system information requested by the first system information request.
Optionally, in an implementation manner of the first aspect, the system information request generated by the terminal device at the RRC layer is a system information request generated based on RRC dedicated signaling or based on a third Message (Message 3, MSG3) in a contention based random access procedure.
Optionally, in an implementation manner of the first aspect, the duration of the timer is maintained in the RRC layer.
Optionally, in an implementation manner of the first aspect, the receiving, by the terminal device, configuration information sent by the network device includes:
the terminal device receives the configuration information sent by the network device through RRC dedicated signaling.
In a second aspect, an embodiment of the present application provides a terminal device, which may execute the modules or units of the method in the first aspect or any optional implementation manner of the first aspect.
In a third aspect, a terminal device is provided that includes a processor, a memory, and a communication interface. The processor is coupled to the memory and the communication interface. The memory is for storing instructions, the processor is for executing the instructions, and the communication interface is for communicating with other network elements under control of the processor. The processor, when executing the instructions stored by the memory, causes the processor to perform the method of the first aspect or any possible implementation of the first aspect.
In a fourth aspect, a computer storage medium is provided having program code stored therein for instructing a computer to execute the instructions of the method of the above aspects.
In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.
Drawings
Fig. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
Fig. 2 is a schematic flow chart diagram of a method of wireless communication in accordance with an embodiment of the present application.
Fig. 3 is a schematic diagram of a timer varying with SI request transmission in an embodiment of the present application.
Fig. 4 is a schematic diagram of another timer varying with SI request transmission in this embodiment.
Fig. 5 is a schematic diagram of a further timer varying with SI request transmission in the embodiment of the present application.
Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
Fig. 7 shows a schematic block diagram of a device for wireless communication provided by an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a system chip according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The technical scheme of the embodiment of the application can be applied to a 5G NR communication system.
A terminal device in the embodiments of the present application may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G Network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, and the embodiments of the present application are not limited thereto.
Various embodiments are described herein in connection with a network device. The Network device in this embodiment may be a device for communicating with a terminal device, where the Network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, and may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the Network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a Next Generation evolved NodeB (NG-eNB), an access Network device (e.g., a gNB) in a 5G Network, or an access Network device in a future evolved Public Land Mobile Network (PLMN) Network, and the like, and the embodiment of the present invention is not limited.
Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.
Optionally, the wireless communication system 100 may further include an access and mobility Management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an authentication server Function (AUSF), and other network entities, which are not limited in this embodiment of the present invention.
Moreover, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash Memory devices (e.g., Erasable programmable read-Only Memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, various media capable of storing, containing, and/or carrying instruction(s) and/or data.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Fig. 2 is a schematic flow chart diagram of a method 200 of wireless communication according to an embodiment of the present application. The method 200 may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method 200 includes at least some of the following.
S210, the terminal device receives configuration information sent by the network device, wherein the configuration information is used for indicating the duration of the timer.
Specifically, the terminal device receives the configuration information sent by the network device through RRC dedicated signaling.
Optionally, the duration of the timer is maintained in the RRC layer.
Alternatively, the Timer may be a Prohibit Timer (Prohibit Timer) that restricts the SI request.
Optionally, the system information request generated by the terminal device at the RRC layer is a system information request generated based on RRC dedicated signaling or based on MSG3 in a contention based random access procedure.
S220, the terminal device starts the timer when generating the first system information request in the RRC layer and submitting the first system information request to the MAC layer.
Alternatively, the terminal device may obtain the System Information requested by the first System Information request by reading a System Information Block (SIB).
For example, the terminal device may obtain the system information requested by the first system information request by reading SIB1, and SIB1 holds system information requested by other terminal devices that trigger the first system information request.
Optionally, the terminal device receives an RRC message sent by the network device to indicate the system information requested by the first system information request.
The method 200 further comprises:
the terminal equipment generates a second system information request in the time length of the timer at the RRC layer and reserves the second system information request at the RRC layer;
the terminal device submits the second system information request to the MAC layer upon expiration of the timer.
It should be understood that the expiration of the timer (expired) may also be understood as the expiration of the timer, and may also be understood as the failure of the timer, i.e., the timer has expired after the duration of the timer.
For example, as shown in fig. 3, when the terminal device generates an SI request (request)1 at the RRC layer at time 1 and submits the SI request 1 to the MAC layer, a timer is started, and when the terminal device generates an SI request 2 at the RRC layer at time 2 (time 2 is within the duration of the timer), the terminal device retains the SI request 2 at the RRC layer, and when the timer expires, the terminal device submits the SI request 2 to the MAC layer.
Optionally, the method 200 further comprises:
the terminal equipment acquires the system information requested by the first system information request within the duration of the timer;
the terminal device stops the timer.
Optionally, the method 200 further comprises:
the terminal device starts the timer when the RRC layer generates a third system information request, where the third system information request is the first system information request generated by the terminal device after the timer is stopped.
For example, as shown in fig. 4, when the terminal device generates SI request 1 in the RRC layer at time 1 and submits SI request 1 to the MAC layer, a timer is started, and when the terminal device acquires the SI requested by SI request 1 at time 2 (time 2 is within the duration of the timer), the terminal device stops the timer. The terminal device generates an SI request 3 (the first SI request generated by the terminal device after the timer stops) at the RRC layer at time 3, and then the terminal device starts the timer.
Optionally, the method 200 further comprises:
the terminal equipment generates a fourth system information request in the time length of the timer at an RRC layer and reserves the fourth system information request at the RRC layer;
after generating the fourth system information request, the terminal device obtains the system information requested by the first system information request within the duration of the timer;
the terminal device stops the timer and deletes the fourth system information request.
Optionally, the terminal device starts the timer when the RRC layer generates a fifth system information request, where the fifth system information request is a first system information request generated by the terminal device after the timer is stopped.
For example, as shown in fig. 5, when the terminal device generates SI request 1 at the RRC layer at time 1 and submits SI request 1 to the MAC layer, the terminal device starts a timer, generates SI request 4 at the RRC layer at time 2 (time 2 is within the duration of the timer), and reserves SI request 4 at the RRC layer, and the terminal device acquires SI requested by SI request 1 at time 3 (time 3 is within the duration of the timer), the terminal device stops the timer and deletes SI request 4 reserved by the RRC layer. For another example, the terminal device generates SI request 5 (the first request generated by the terminal device after the timer is stopped) in the RRC layer at time 4, and then the terminal device starts the timer.
Therefore, in the method for wireless communication according to the embodiment of the present application, the terminal device starts the timer when generating the first system information request in the RRC layer and submitting the first system information request to the MAC layer, so that the terminal device can control the sending of the system information request in the RRC layer based on the timer, thereby avoiding frequent scheduling of the system information request in the RRC layer and avoiding uplink channel congestion.
Fig. 6 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. The terminal device 300 includes:
a communication unit 310, configured to receive configuration information sent by a network device, where the configuration information is used to indicate a duration of a timer;
the processing unit 320 is configured to start the timer when the RRC layer generates the first system information request and submits the first system information request to the MAC layer.
Optionally, the processing unit 320 is further configured to generate a second system information request in the RRC layer within the duration of the timer, and reserve the second system information request in the RRC layer;
the processing unit 320 is further configured to submit the second system information request to the MAC layer when the timer expires.
Optionally, the processing unit 320 is further configured to obtain the system information requested by the first system information request within the duration of the timer;
the processing unit 320 is further configured to stop the timer.
Optionally, the processing unit 320 is further configured to start the timer when the RRC layer generates a third system information request, where the third system information request is a first system information request generated by the terminal device after the timer is stopped.
Optionally, the processing unit 320 is further configured to generate a fourth system information request in the RRC layer within the duration of the timer, and reserve the fourth system information request in the RRC layer;
the processing unit 320 is further configured to, after generating the fourth system information request, obtain the system information requested by the first system information request within the duration of the timer;
the processing unit 320 is further configured to stop the timer and delete the fourth system information request.
Optionally, the processing unit 320 is further configured to start the timer when the RRC layer generates a fifth system information request, where the fifth system information request is a first system information request generated by the terminal device after the timer is stopped.
Optionally, the processing unit 320 is specifically configured to:
obtaining the system information requested by the first system information request by reading a system information block, or
And receiving an RRC message sent by the network equipment and used for indicating the system information requested by the first system information request.
Optionally, the system information request generated by the terminal device at the RRC layer is a system information request generated based on RRC dedicated signaling or based on MSG3 in a contention based random access procedure.
Optionally, the duration of the timer is maintained in the RRC layer.
Optionally, the communication unit 310 is specifically configured to:
and receiving the configuration information sent by the network equipment through RRC dedicated signaling.
It should be understood that the terminal device 300 may correspond to the terminal device in the method 200, and corresponding operations implemented by the terminal device in the method 200 may be implemented, which are not described herein again for brevity.
Fig. 7 shows a schematic block diagram of an apparatus 400 for wireless communication provided by an embodiment of the application, where the apparatus 400 includes:
a memory 410 for storing a program, the program comprising code;
a transceiver 420 for communicating with other devices;
a processor 430 for executing the program code in the memory 410.
Optionally, the transceiver 420 is used to perform specific signal transceiving under the driving of the processor 430.
Optionally, when the code is executed, the processor 430 may implement each operation performed by the terminal device in the method 200 in fig. 2, and details are not described herein for brevity. In this case, the device 400 may be a terminal device, for example, a mobile phone.
It should be understood that, in the embodiment of the present application, the processor 430 may be a Central Processing Unit (CPU), and the processor 430 may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 410 may include both read-only memory and random-access memory, and provides instructions and data to the processor 430. A portion of the memory 410 may also include non-volatile random access memory. For example, the memory 410 may also store device type information.
The transceiver 420 may be for performing signal transmission and reception functions such as frequency modulation and demodulation functions or frequency up-and down-conversion functions.
In implementation, at least one step of the above method may be performed by a hardware integrated logic circuit in the processor 430, or the integrated logic circuit may perform the at least one step under instruction driving in a software form. Thus, the device 400 for wireless communication may be a single chip or a chip set. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and the processor 430 reads information in the memory and performs the steps of the method in combination with hardware thereof. To avoid repetition, it is not described in detail here.
Fig. 8 is a schematic block diagram of a system chip 500 according to an embodiment of the present application. The system chip 500 of fig. 5 includes an input interface 501, an output interface 502, a processor 503 and a memory 504, which are connected via an internal communication connection, and the processor 503 is used for executing codes in the memory 504.
Optionally, when the code is executed, the processor 503 implements the method performed by the terminal device in the method embodiment. For brevity, no further description is provided herein.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (19)
1. A method of wireless communication, comprising:
the method comprises the steps that terminal equipment receives configuration information sent by network equipment, wherein the configuration information is used for indicating the duration of a timer, and the timer is a prohibition timer used for restricting a system information request;
the terminal equipment generates a first system information request on a Radio Resource Control (RRC) layer and starts the timer when submitting the first system information request to a Media Access Control (MAC) layer;
the terminal equipment generates a second system information request in an RRC layer within the duration of the timer, and reserves the second system information request in the RRC layer;
and the terminal equipment submits the second system information request to an MAC layer when the timer is terminated.
2. The method of claim 1, further comprising:
the terminal equipment acquires the system information requested by the first system information request within the duration of the timer;
the terminal equipment stops the timer.
3. The method of claim 2, further comprising:
the terminal device starts the timer when generating a third system information request in an RRC layer, wherein the third system information request is a first system information request generated by the terminal device after the timer is stopped.
4. The method of claim 1, further comprising:
the terminal equipment generates a fourth system information request in the time length of the timer at an RRC layer, and reserves the fourth system information request at the RRC layer;
after the fourth system information request is generated, the terminal equipment acquires the system information requested by the first system information request within the duration of the timer;
the terminal device stops the timer and deletes the fourth system information request.
5. The method of claim 4, further comprising:
the terminal device starts the timer when generating a fifth system information request in an RRC layer, wherein the fifth system information request is a first system information request generated by the terminal device after the timer is stopped.
6. The method of claim 2, wherein the obtaining, by the terminal device, the system information requested by the first system information request within the duration of the timer comprises:
the terminal device obtains the system information requested by the first system information request by reading a system information block, or
And the terminal equipment receives the RRC message which is sent by the network equipment and used for indicating the system information requested by the first system information request.
7. The method according to any of claims 1 to 6, wherein the system information request generated by the terminal device at RRC layer is a system information request generated based on RRC dedicated signaling or based on the third message MSG3 in contention based random access procedure.
8. The method according to any of claims 1 to 6, wherein the duration of the timer is maintained at the RRC layer.
9. The method according to any one of claims 1 to 6, wherein the receiving, by the terminal device, the configuration information sent by the network device comprises:
and the terminal equipment receives the configuration information sent by the network equipment through RRC dedicated signaling.
10. A terminal device, comprising:
a communication unit, configured to receive configuration information sent by a network device, where the configuration information is used to indicate a duration of a timer, and the timer is a prohibit timer used to restrict a system information request;
the processing unit is used for starting the timer when a Radio Resource Control (RRC) layer generates a first system information request and submits the first system information request to a Media Access Control (MAC) layer;
the processing unit is further configured to generate a second system information request in an RRC layer within a duration of the timer, and reserve the second system information request in the RRC layer;
the processing unit is further configured to submit the second system information request to a MAC layer when the timer expires.
11. The terminal device of claim 10,
the processing unit is further configured to acquire the system information requested by the first system information request within a duration of the timer;
the processing unit is further configured to stop the timer.
12. The terminal device of claim 11,
the processing unit is further configured to start the timer when the RRC layer generates a third system information request, where the third system information request is a first system information request generated by the terminal device after the timer is stopped.
13. The terminal device of claim 10,
the processing unit is further configured to generate a fourth system information request in the duration of the timer at the RRC layer, and reserve the fourth system information request at the RRC layer;
the processing unit is further configured to, after the fourth system information request is generated, acquire the system information requested by the first system information request within a duration of the timer;
the processing unit is further configured to stop the timer and delete the fourth system information request.
14. The terminal device of claim 13,
the processing unit is further configured to start the timer when the RRC layer generates a fifth system information request, where the fifth system information request is a first system information request generated by the terminal device after the timer is stopped.
15. The terminal device of claim 11, wherein the processing unit is specifically configured to:
obtaining system information requested by the first system information request by reading a system information block, or
And receiving an RRC message sent by the network equipment and used for indicating the system information requested by the first system information request.
16. The terminal device according to any of claims 10 to 15, wherein the system information request generated by the terminal device at the RRC layer is a system information request generated based on RRC dedicated signaling or based on a third message MSG3 in a contention based random access procedure.
17. The terminal device according to any of claims 10-15, wherein the duration of the timer is maintained at the RRC layer.
18. The terminal device according to any one of claims 10 to 15, wherein the communication unit is specifically configured to:
receiving the configuration information sent by the network device through RRC dedicated signaling.
19. A computer-readable storage medium, characterized in that a program code is stored therein for instructing a computer to execute the method of wireless communication according to any one of claims 1 to 9.
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| PCT/CN2018/076572 WO2019153360A1 (en) | 2018-02-12 | 2018-02-12 | Method for radio communication and terminal device |
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| CN109644368B true CN109644368B (en) | 2020-04-28 |
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