WO2019153361A1

WO2019153361A1 - Wireless communication method and terminal device

Info

Publication number: WO2019153361A1
Application number: PCT/CN2018/076573
Authority: WO
Inventors: 石聪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2019-08-15
Also published as: CN109644463A; CN109644463B

Abstract

Provided in an embodiment of the present invention are a wireless communication method and a terminal device. The terminal device can use a timer to control transmission of a system information (SI) request at a MAC layer, thereby preventing frequent scheduling of MSG 1-based SI requests at the MAC layer in a random access process, and preventing congestion on an uplink random access channel. The method comprises: a terminal device receiving configuration information transmitted by a network device, the configuration information indicating a duration of a timer; and the terminal device generating a first system information request at a MAC layer, and activating the timer while transmitting the first system information request to the network device.

Description

Wireless communication method and terminal device

Technical field

The present application relates to the field of communications, and more particularly to a method and terminal device for wireless communication.

Background technique

In the fifth generation of mobile communication technology (5-Generation New Radio (5G NR)), the terminal device triggers System Information (SI) request at the Media Access Control (MAC) layer by the terminal device. The generated, however, does not introduce a mechanism for limiting the transmission frequency. Therefore, it may happen that the MAC request is excessively frequent based on the first message (Message 1, MSG1) in the random access procedure, resulting in a network device (for example, , base station) congestion of the uplink random access channel (RACH).

Summary of the invention

The embodiment of the present application provides a method and a terminal device for wireless communication, where the terminal device can control the sending of the system information request of the MAC layer based on the timer, thereby preventing the MAC layer from frequently requesting the SIG1 based on the MSG1 in the random access process. Scheduling and avoiding congestion on the uplink random access channel.

In a first aspect, an embodiment of the present application provides a method for wireless communication, including:

Receiving, by the terminal device, configuration information sent by the network device, where the configuration information is used to indicate a duration of the timer;

The terminal device starts the timer when the first layer system information request is generated by the MAC layer and the first system information request is sent to the network device.

Therefore, in the method of wireless communication in the embodiment of the present application, the terminal device starts a timer when the MAC layer generates the first system information request and sends the first system information request to the network device, so that the terminal device can be based on the timer control. The MAC layer is based on the transmission of the SI request of the MSG1 in the random access procedure, and further avoids frequent scheduling of the MAC layer based on the SI request of the MSG1 in the random access procedure, and avoids congestion of the uplink random access channel.

Optionally, in an implementation manner of the first aspect, the method further includes:

The terminal device generates a second system information request at the MAC layer within the duration of the timer, and reserves the second system information request at the MAC layer;

The terminal device sends the second system information request to the network device when the timer expires.

The terminal device acquires system information requested by the first system information request within a duration of the timer;

The terminal device stops the timer.

The terminal device starts the timer when the MAC layer generates the 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.

The terminal device generates a fourth system information request at the MAC layer within the duration of the timer, and reserves the fourth system information request at the MAC layer;

After generating the fourth system information request, the terminal device acquires system information requested by the first system information request within a duration of the timer;

The terminal device stops the timer and deletes the fourth system information request.

The terminal device starts the timer when the MAC layer generates the 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, including:

The terminal device acquires system information requested by the first system information request by reading a system information block, or

The terminal device receives an RRC message sent by the network device to indicate 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 MAC layer is a system information request generated according to the MSG1 in the random access procedure.

Optionally, in an implementation manner of the first aspect, the duration of the timer is maintained at the MAC layer.

Optionally, in an implementation manner of the first aspect, the terminal device receives the configuration information sent by the network device, including:

The terminal device receives the configuration information that is sent by the network device by using RRC dedicated signaling.

In a second aspect, the embodiment of the present application provides a terminal device, which can execute the module or unit 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, the terminal device comprising a processor, a memory, and a communication interface. The processor is coupled to the memory and communication interface. The memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor. When the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a computer storage medium is provided having stored therein program code for instructing a computer to execute instructions of the methods described in the above aspects.

In a fifth aspect, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

FIG. 2 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a timer changing according to an SI request in the embodiment of the present application.

FIG. 4 is a schematic diagram of another timer in the embodiment of the present application as a function of SI request transmission.

FIG. 5 is a schematic diagram of another timer in the embodiment of the present application as a function of sending an SI request.

FIG. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of an apparatus 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 ways

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

The technical solution of the embodiment of the present application can be applied to a 5G NR communication system.

The terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device. Communication device, user agent or user device. 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), with wireless communication. Functional handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network or terminal in a future evolved public land mobile network (PLMN) The device and the like are not limited in the embodiment of the present application.

The present application describes various embodiments in connection with a network device. The network device in the embodiment of the present application may be a device for communicating with the terminal device, where the network device may be an evolved base station (Evolutional NodeB, eNB or eNodeB) in the LTE system, or may be a cloud wireless access network (Cloud A radio controller in a Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, a Next Generation Evolutional NodeB (NG-eNB), and a 5G network. The embodiment of the present application is not limited in the case of an access network device (for example, gNB) or an access network device in a publicly-developed public land mobile network (PLMN) network.

FIG. 1 exemplarily shows one network device and two terminal devices. Alternatively, 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. The application embodiment does not limit this.

Optionally, the wireless communication system 100 may further include an Access and Mobility Management Function (AMF), a Session Management Function (SMF), and a Unified Data Management (UDM). Other network entities, such as an authentication server function (AUSF), are not limited in this embodiment of the present application.

Furthermore, various aspects or features of the present application can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.). Additionally, the 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" may include, but is not limited to, a variety of media capable of storing, containing, and/or carrying instructions and/or data.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

2 is a schematic flow diagram of a method 200 of wireless communication in accordance with an embodiment of the present application. The method 200 is optionally applicable 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, where the configuration information is used to indicate a duration of the timer.

Optionally, the system information request generated by the terminal device at the MAC layer is a system information request generated based on the MSG1 in the random access procedure.

For example, a system information request generated based on MSG1 in a contention-based random access procedure. As another example, a system information request generated based on MSG1 in a non-contention random access procedure.

Optionally, the duration of the timer is maintained at the MAC layer.

Specifically, the terminal device receives the configuration information that is sent by the network device by using RRC dedicated signaling.

Optionally, the timer may be a Prohibit Timer that constrains the SI request.

S220. The terminal device starts the timer when the first layer system information request is generated by the MAC layer, and the first system information request is sent to the network device.

Optionally, 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 can obtain the system information requested by the first system information request by reading the SIB1, and the system information requested by the other terminal device to trigger the first system information request is saved in the SIB1.

Optionally, the terminal device receives an RRC message sent by the network device to indicate system information requested by the first system information request.

Optionally, the method 200 further includes:

It should be understood that the expiration of the timer can also be understood as a timer timeout, and can also be understood as a timer failure, that is, the timer stops working after the duration of the timer is exceeded.

For example, as shown in FIG. 3, when the terminal device generates an SI request 1 at the MAC layer and a SI request 1 to the network device at time 1, the timer starts, and the terminal device is at time 2 (time 2 is at the timer). In the range of the duration, SI request 2 is generated at the RRC layer, and the terminal device reserves the SI request 2 at the MAC layer, and the terminal device sends the SI request 2 to the network device when the timer expires.

Optionally, the method 200 further includes:

The terminal device stops the timer.

Optionally, the method 200 further includes:

For example, as shown in FIG. 4, when the terminal device generates the SI request 1 at the MAC layer and sends the SI request 1 to the network device at time 1, the terminal starts the timer, and the terminal device is at the time 2 (the time 2 is within the duration of the timer). When the SI requested by the SI request 1 is acquired, the terminal device stops the timer. The terminal device generates SI request 3 at the MAC layer at time 3 (the first SI request generated by the terminal device after the timer is stopped), and the terminal device starts a timer.

Optionally, the method 200 further includes:

For example, as shown in FIG. 5, when the terminal device generates the SI request 1 at the MAC layer and sends the SI request 1 to the network device at time 1, the terminal starts the timer, and the terminal device is at the time 2 (the time 2 is within the duration of the timer). The SI request 4 is generated at the MAC layer, and the SI request 4 is reserved at the MAC layer. The terminal device acquires the SI requested by the SI request 1 at time 3 (time 3 is within the duration of the timer), and the terminal device stops the timer. , delete the SI request 4 reserved by the MAC layer. For another example, the terminal device generates the SI request 5 at the MAC layer at time 4 (the first SI request generated by the terminal device after the timer is stopped), and the terminal device starts the timer.

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:

The communication unit 310 is configured to receive configuration information sent by the network device, where the configuration information is used to indicate a duration of the timer;

The processing unit 320 is configured to start the first system information request at the MAC layer, and start the timer when the first system information request is sent to the network device.

Optionally, the processing unit 320 is further configured to generate a second system information request at the MAC layer within the duration of the timer, and retain the second system information request at the MAC layer;

The processing unit 320 is further configured to send the second system information request to the network device when the timer expires.

Optionally, the processing unit 320 is further configured to: acquire system information requested by the first system information request within a 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 MAC layer generates the third system information request, where the third system information request is the first system generated by the terminal device after the timer stops. Information request.

Optionally, the processing unit 320 is further configured to: after the duration of the timer, generate a fourth system information request at the MAC layer, and reserve the fourth system information request at the MAC layer;

The processing unit 320 is further configured to: after generating the fourth system information request, acquire system information requested by the first system information request within a 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 MAC layer generates the fifth system information request, where the fifth system information request is the first system generated by the terminal device after the timer stops. Information request.

Optionally, the processing unit 320 is specifically configured to:

Obtaining system information requested by the first system information request by reading a system information block, or

Receiving an RRC message sent by the network device to indicate system information requested by the first system information request.

Optionally, the duration of the timer is maintained at the MAC layer.

Optionally, the communication unit 310 is specifically configured to:

Receiving the configuration information that the network device sends through RRC dedicated signaling.

It should be understood that the terminal device 300 may correspond to the terminal device in the method 200, and the corresponding operations implemented by the terminal device in the method 200 may be implemented. For brevity, no further details are provided herein.

FIG. 7 is a schematic block diagram of a device 400 for wireless communication provided by an embodiment of the present application. The device 400 includes:

The memory 410 is configured to store a program, where the program includes a code;

The transceiver 420 is configured to communicate with other devices;

The processor 430 is configured to execute program code in the memory 410.

Optionally, the transceiver 420 is configured to perform specific signal transceiving under the driving of the processor 430.

Optionally, when the code is executed, the processor 430 can implement various operations performed by the terminal device in the method 200 in FIG. 2, and details are not described herein for brevity. At this time, the device 400 can be a terminal device, such as 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-purpose processors, digital signal processors (DSPs), and application specific integrated circuits. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and more. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 410 can include 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 a non-volatile random access memory. For example, the memory 410 can also store information of the device type.

The transceiver 420 can be used to implement signal transmission and reception functions, such as frequency modulation and demodulation functions or upconversion and down conversion functions.

In an implementation process, at least one step of the above method may be performed by an integrated logic circuit of hardware in the processor 430, or the integrated logic circuit may perform the at least one step driven by an instruction in a software form. Thus, the device 400 for wireless communication can be a chip or chipset. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor 430 reads the information in the memory and completes the steps of the above method in combination with the hardware thereof. To avoid repetition, it will not be described in detail here.

FIG. 8 is a schematic structural 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 that can be connected by an internal communication connection line for executing code in the memory 504.

Alternatively, when the code is executed, the processor 503 implements a method performed by the terminal device in the method embodiment. For the sake of brevity, it will not be repeated here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it 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 the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of this application is subject to the scope of protection of the claims.

Claims

A method of wireless communication, comprising:

Receiving, by the terminal device, configuration information sent by the network device, where the configuration information is used to indicate a duration of the timer;

The terminal device starts the timer when the media access control MAC layer generates a first system information request and sends the first system information request to the network device.
The method of claim 1 further comprising:

The terminal device generates a second system information request at a MAC layer within a duration of the timer, and reserves the second system information request at a MAC layer;

The terminal device sends the second system information request to the network device when the timer expires.
The method of claim 1 further comprising:

The terminal device acquires system information requested by the first system information request within a duration of the timer;

The terminal device stops the timer.
The method of claim 3, wherein the method further comprises:

The terminal device starts the timer when the MAC 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.
The method of claim 1 further comprising:

The terminal device generates a fourth system information request at the MAC layer within the duration of the timer, and reserves the fourth system information request at the MAC layer;

After generating the fourth system information request, the terminal device acquires system information requested by the first system information request within a duration of the timer;

The terminal device stops the timer and deletes the fourth system information request.
The method of claim 5, wherein the method further comprises:

The terminal device starts the timer when the MAC 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.
The method according to any one of claims 3 to 6, wherein the acquiring, by the terminal device, the system information requested by the first system information request within the duration of the timer comprises:

Obtaining, by the terminal device, the system information requested by the first system information request by reading a system information block, or

The terminal device receives an RRC message sent by the network device to indicate system information requested by the first system information request.
The method according to any one of claims 1 to 7, wherein the system information request generated by the terminal device at the MAC layer is a system information request generated based on the first message MSG1 in the random access procedure .
The method according to any one of claims 1 to 8, wherein the duration of the timer is maintained at the MAC layer.
The method according to any one of claims 1 to 9, wherein the receiving, by the terminal device, the configuration information sent by the network device comprises:

The terminal device receives the configuration information that is sent by the network device by using RRC dedicated signaling.
A terminal device, comprising:

a communication unit, configured to receive configuration information sent by the network device, where the configuration information is used to indicate a duration of the timer;

And a processing unit, configured to start, when the media access control MAC layer generates a first system information request, and send the first system information request to the network device.
The terminal device according to claim 11, wherein

The processing unit is further configured to generate a second system information request at a MAC layer within a duration of the timer, and retain the second system information request at a MAC layer;

The processing unit is further configured to send the second system information request to the network device when the timer expires.
The terminal device according to claim 11, wherein

The processing unit is further configured to acquire 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.
The terminal device according to claim 13, wherein

The processing unit is further configured to start the timer when the MAC layer generates a third system information request, where the third system information request is the first system generated by the terminal device after the timer stops Information request.
The terminal device according to claim 11, wherein

The processing unit is further configured to generate a fourth system information request at a MAC layer within a duration of the timer, and retain the fourth system information request at a MAC layer;

The processing unit is further configured to: after generating the fourth system information request, acquire 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.
The terminal device according to claim 15, wherein

The processing unit is further configured to start the timer when the MAC layer generates a fifth system information request, where the fifth system information request is the first system generated by the terminal device after the timer stops Information request.
The terminal device according to any one of claims 13 to 16, 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

Receiving an RRC message sent by the network device to indicate system information requested by the first system information request.
The terminal device according to any one of claims 11 to 17, wherein the system information generated by the terminal device at the MAC layer is system information generated based on the first message MSG1 in the random access procedure. request.
The terminal device according to any one of claims 11 to 18, characterized in that the duration of the timer is maintained at the MAC layer.
The terminal device according to any one of claims 11 to 19, wherein the communication unit is specifically configured to:

Receiving, by the network device, the configuration information that is sent by using RRC dedicated signaling.