WO2020007296A1

WO2020007296A1 - Random access status transmission method, random access status receiving method, user terminal, and network side device

Info

Publication number: WO2020007296A1
Application number: PCT/CN2019/094399
Authority: WO
Inventors: 刘洋; 刘亮; 胡南; 李男
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2018-07-02
Filing date: 2019-07-02
Publication date: 2020-01-09
Also published as: CN110677915A

Abstract

The present application provides a random access status transmission method, a random access status receiving method, a user terminal, and a network side device. The random access status transmission method applied in a user terminal comprises: after accessing a network, transmitting the previous random access status to a network side device, the random access status comprising random access information corresponding to each uplink carrier over which the user terminal initiates random access.

Description

Sending and receiving method for random access situation, user terminal and network side equipment

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810709757.6 filed in China on July 2, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a method for sending and receiving random access conditions, a user terminal, and a network-side device.

Background technique

In order to help the base station to optimize the random access parameters, the Long Term Evolution (LTE) protocol defines that the base station should have a random access channel (Random Access Channel) before the user terminal (User Equipment) inquiring about the access network. , RACH) situation. After receiving the inquiry from the base station, the UE should return the corresponding information to the base station.

In traditional LTE, because the transmitting antenna is omnidirectional, UEs located in various positions of the base station share the same set of random access preambles. When feeding back the previous RACH situation to the base station, the UE only responds to the number of preamble transmissions and a flag indicating whether the preamble transmission conflicts.

In the uplink transmission, based on the fact that the UE ’s uplink transmit power is limited, in order to achieve better uplink coverage, 5th generation mobile communication systems (5G) introduced the multiplexed fourth generation mobile communication technology (Fourth Generation of mobile communication technology (4G) uplink carrier characteristics, that is, allows the UE to use the lower 4G frequency band compared to the 5G application frequency band to perform uplink communication in the 5G New Radio (NR) cell. That is, a 5G NR cell can be composed of a 5G downlink carrier and two uplink carriers. However, because the preamble sequence and the uplink carrier may not have a binding relationship, if the LTE feedback mechanism in the related technology is not copied, the base station cannot know the conflict situation of the UE that performs random access on each carrier separately.

Summary of the invention

The technical problem to be solved by the present disclosure is to provide a method for sending and receiving random access conditions, a user terminal, and a network-side device, which can enable the user terminal to feedback the random access condition to the network side when there are multiple uplink carriers. device.

To solve the above technical problems, the embodiments of the present disclosure provide the following technical solutions: On the one hand, a method for sending a random access situation is provided, which is applied to a user terminal and includes:

After accessing the network, the previous random access condition is sent to the network-side device, and the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.

further,

The random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.

further,

The random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of successes .

An embodiment of the present disclosure further provides a method for receiving a random access situation, which is applied to a network-side device and includes:

Receiving a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.

further,

An embodiment of the present disclosure further provides a user terminal including a processor and a transceiver,

The transceiver is configured to send a previous random access situation to a network-side device after accessing the network, where the random access situation includes a random access corresponding to each uplink carrier that the user terminal initiates random access to information.

further,

An embodiment of the present disclosure further provides a network-side device, including a processor and a transceiver,

The transceiver is configured to receive a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.

further,

An embodiment of the present disclosure further provides a user terminal including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the program as described above when it is executed. Random access situation sending method.

An embodiment of the present disclosure further provides a network-side device, including a memory, a processor, and a computer program stored on the memory and executable on the processor; when the processor executes the program, the program is implemented as described above. The random access situation receiving method described above.

An embodiment of the present disclosure further provides a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps in the random access situation sending method described above or implements the random access described above. Steps in an access situation receiving method.

The embodiments of the present disclosure have the following beneficial effects:

In the above solution, after accessing the network, the user terminal sends the previous random access situation to the network-side device. The random access situation includes random access information corresponding to each uplink carrier that the user terminal initiated random access, so that The network-side device is aware of the conflict situation of the user terminals that do random access on each uplink carrier, and can coordinate and optimize the random access resources allocated to different carriers.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic flowchart of a method for sending a random access situation according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for receiving a random access situation according to an embodiment of the present disclosure;

3 is a schematic diagram of a random access situation according to an embodiment of the present disclosure;

4 is a structural block diagram of a user terminal according to an embodiment of the present disclosure;

FIG. 5 is a structural block diagram of a network-side device according to an embodiment of the present disclosure.

detailed description

In order to make the technical problems, technical solutions, and advantages to be solved by the embodiments of the present disclosure clearer, the following describes in detail with reference to the accompanying drawings and specific embodiments.

Embodiments of the present disclosure provide a method for sending and receiving random access conditions, a user terminal, and a network-side device. In a case where a supplementary uplink carrier is used in the future 5G, necessary information reflecting the previous random access condition of the UE is fed back to the network-side device. .

Because in the random access process, different UEs may initiate random access on different carriers according to different path losses, and because of the uneven distribution of UEs, the random access situation on different carriers may be different. Then, the random access resources allocated to different carriers need to be coordinated and optimized.

And because of path loss changes, UE movement, etc., the UE may have initiated random access on different carriers before accessing the network. Therefore, the random access situation (UE information response) fed back by the UE should indicate the number of times the random access preamble is sent in each attempted carrier to reflect the random access situation on different carriers.

An embodiment of the present disclosure provides a method for sending a random access situation, which is applied to a user terminal. As shown in FIG. 1, the method includes:

Step 101: After accessing the network, send the previous random access situation to the network-side device, where the random access situation includes random access information corresponding to each uplink carrier that the user terminal initiated random access.

In this embodiment, after accessing the network, the user terminal sends the previous random access situation to the network-side device, and the random access situation includes random access information corresponding to each uplink carrier that the user terminal initiated random access, The network-side device is made aware of the conflict situation of the user terminal that performs random access on each uplink carrier, and can perform overall optimization of random access resources allocated to different carriers.

Further, the random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.

Further, the random access information includes the number of times the random access preamble is sent and / or the number of failures; or the random access information includes the number of times the random access preamble is sent and / or the number of successes.

Specifically, as shown in FIG. 3, the random access situation includes multiple sets of random access information, and each set of random access information includes an uplink carrier identifier (NUL index or SUL index), and the number of times the random access preamble is sent (Number of preambles and failure times, optionally, each group of random access information may not include failure times. Of course, each group of random access information may also include the identifier of the uplink carrier and the number of times of sending and / or success of the random access preamble, where the sum of the number of failures and the number of successes is equal to the number of times of sending the random access preamble, ie Each group of random access information may include a conflict detection result, indicating failure or success (Contention Detected? True or false).

An embodiment of the present disclosure further provides a method for receiving a random access situation, which is applied to a network-side device. As shown in FIG. 2, the method includes:

Step 201: Receive a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal has initiated random access.

Further, the random access information of the corresponding uplink carrier includes the number of times of random access preamble transmission and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times of random access preamble transmission and / Or number of successes.

Specifically, as shown in FIG. 3, the random access situation includes multiple sets of random access information, and each set of random access information includes an uplink carrier identifier (NUL index or SUL index), and the number of times the random access preamble is sent (Number of preambles and failure times, optionally, each group of random access information may not include failure times. Of course, each group of random access information may also include the identifier of the uplink carrier and the number of times of sending and / or success of the random access preamble, where the sum of the number of failures and the number of successes is equal to the number of times of sending the random access preamble, that is, Each group of random access information may include a conflict detection result, indicating failure or success (Contention Detected? True or false).

An embodiment of the present disclosure further provides a user terminal, as shown in FIG. 4, including a processor 31 and a transceiver 32,

The transceiver 32 is configured to send a previous random access condition to a network-side device after accessing the network, where the random access condition includes a random corresponding to each uplink carrier that the user terminal initiates random access to. Access information.

An embodiment of the present disclosure further provides a network-side device, as shown in FIG. 5, including a processor 41 and a transceiver 42,

The transceiver 42 is configured to receive a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal has initiated random access.

It can be understood that the embodiments described herein may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSP), digital signal processing equipment (DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (FPGA), general-purpose processor, controller, microcontroller, microprocessor, other for performing the functions described in this application Electronic unit or combination thereof.

For software implementation, the techniques described herein can be implemented through modules (e.g., procedures, functions, etc.) that perform the functions described herein. Software codes may be stored in a memory and executed by a processor. The memory may be implemented in the processor or external to the processor.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may refer to each other.

Those skilled in the art should understand that the embodiments of the embodiments of the present disclosure may be provided as a method, an apparatus, or a computer program product. Therefore, the embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present disclosure may use one or more computer-usable storage media (including but not limited to magnetic disk storage, read-only memory (CD-ROM), and optical storage) containing computer-usable program code. Etc.) in the form of a computer program product.

Embodiments of the present disclosure are described with reference to flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing terminal device Means are generated for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including the instruction means, the The instruction means implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing terminal device, so that a series of operation steps can be performed on the computer or other programmable terminal device to produce a computer-implemented process, so that the computer or other programmable terminal device can The instructions executed on the steps provide steps for implementing the functions specified in one or more of the flowcharts and / or one or more of the block diagrams.

Although the alternative embodiments of the present disclosure have been described, those skilled in the art can make other changes and modifications to these embodiments once they know the basic inventive concepts. Therefore, the appended claims are intended to be construed to include alternative embodiments and all changes and modifications that fall within the scope of the embodiments of the disclosure.

It should also be noted that in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations There is any such actual relationship or order among them. Moreover, the terms "including", "comprising", or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements but also those that are not explicitly listed Other elements, or elements inherent to such a process, method, article, or terminal. Without more restrictions, the elements defined by the sentence "including one ..." do not exclude the existence of other identical elements in the process, method, article, or terminal device including the elements.

The above is an optional implementation of the present disclosure. It should be noted that for ordinary people in the technical field, several improvements and retouches can be made without departing from the principles described in the present disclosure. These improvements and retouches are also Within the scope of this disclosure.

Claims

A method for sending random access conditions, which is applied to a user terminal and includes:

After accessing the network, the previous random access condition is sent to the network-side device, and the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.
The method for transmitting random access conditions according to claim 1, wherein:

The random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.
The method for transmitting random access conditions according to claim 2, wherein:

The random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of successes .
A method for receiving a random access condition, which is applied to a network-side device, includes:

Receiving a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.
The method for receiving a random access situation according to claim 4, wherein:

The random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.
The method for receiving a random access situation according to claim 5, wherein:

The random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of successes .
A user terminal including a processor and a transceiver,

The transceiver is configured to send a previous random access situation to a network-side device after accessing the network, where the random access situation includes a random access corresponding to each uplink carrier that the user terminal initiates random access to information.
The user terminal according to claim 7, wherein:

The random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.
The user terminal according to claim 8, wherein:

The random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of successes .
A network-side device includes a processor and a transceiver,

The transceiver is configured to receive a random access condition sent by a user terminal, where the random access condition includes random access information corresponding to each uplink carrier that the user terminal initiated random access.
The network-side device according to claim 10, wherein:

The random access situation includes multiple sets of random access information, and each set of random access information includes an identifier of an uplink carrier and random access information corresponding to the uplink carrier.
The network-side device according to claim 11, wherein:

The random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of failures; or the random access information of the corresponding uplink carrier includes the number of times the random access preamble is sent and / or the number of successes .
A user terminal includes a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein when the processor executes the program, any one of claims 1-3 is implemented. A method for sending a random access situation according to one item.
A network-side device includes a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein, when the processor executes the program, the method as claimed in claims 4-6 is implemented. The random access situation receiving method according to any one of the preceding claims.
A computer-readable storage medium having stored thereon a computer program, wherein when the program is executed by a processor, the steps in the random access situation sending method according to any one of claims 1-3 are implemented or implemented as The steps in the random access situation receiving method according to any one of claims 4-6.