CN111263445B

CN111263445B - Service transmission method, device and system and base station

Info

Publication number: CN111263445B
Application number: CN201811461971.0A
Authority: CN
Inventors: 朱剑驰; 杨蓓; 佘小明; 陈鹏; 杨峰义; 毕奇
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2023-04-07
Anticipated expiration: 2038-12-03
Also published as: CN111263445A

Abstract

The disclosure provides a service transmission method, a device and a system, and a base station. The service transmission device identifies the type of the service to be sent, and if the service is the specified type of service, the service information is transmitted through a PDCCH (physical Downlink control channel) so that the user terminal can obtain the corresponding service information through blind detection of the PDCCH. The method adopts a one-step transmission mechanism for the low-delay and high-reliability service, thereby effectively improving the transmission efficiency and the transmission reliability of the service information.

Description

Service transmission method, device and system and base station

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method, an apparatus, a system, and a base station for service transmission.

Background

The 5G includes three application scenarios: the method enhances the mobile broadband scene, the mass connection MTC scene, and the low-delay and high-reliability scene.

In the enhanced mobile broadband scene, applications such as ultra-high-definition videos, video conferences, 3D games and the like not only put higher demands on communication rate, but also put higher demands on time delay. The 5G system needs to support higher data rates and lower latency and provide and guarantee a better quality experience for each user in the network.

In a low-delay and high-reliability scene, businesses such as car networking, telemedicine and industrial control put higher demands on delay. The end-to-end delay is required to be minimized to 0.5ms. For 32-byte data packets, the required reliability is 10 within 1ms of one-way user plane delay ^-5 。

At present, the applications for low-delay and high-reliability services include industrial control, intelligent transportation, intelligent power grids and the like.

Disclosure of Invention

The inventor finds, through research, that in the current 5G downlink transmission mode, a user needs to detect a PDCCH first and then a PDSCH, which increases processing delay, and in addition, the user needs to demodulate the PDCCH and the PDSCH correctly at the same time, and the reliability of the PDSCH is not as good as that of the PDCCH.

The present disclosure provides a scheme for transmitting low-latency high-reliability services by using a one-step transmission mechanism.

According to an aspect of one or more embodiments of the present disclosure, there is provided a traffic transmission method, including: identifying the type of the service to be sent; and if the service is the specified type service, transmitting the service information of the service through a Physical Downlink Control Channel (PDCCH) so that the user terminal can obtain the service information of the service through blind detection of the PDCCH.

In some embodiments, if the traffic is a non-specified type of traffic, sending indication information through a PDCCH to instruct a user terminal to detect a physical downlink shared channel PDSCH on specified resources; and sending the service information of the service through a PDSCH channel so that the user terminal can obtain the service information of the service by detecting the PDSCH channel on the appointed resource.

In some embodiments, the specified type of traffic is ultra-high reliable ultra-low latency communications URLLC traffic.

In some embodiments, when the service information of the service is transmitted through a PDCCH channel, the ACK/NACK feedback request indicator for the PDSCH in the downlink control information DCI is modified to the ACK/NACK feedback request indicator for the PDCCH.

According to an aspect of one or more embodiments of the present disclosure, there is provided a traffic transmission apparatus including: the service identification module is configured to identify the type of the service needing to be sent; and the service transmission module is configured to transmit the service information of the service through a Physical Downlink Control Channel (PDCCH) if the service is the specified type of service, so that the user terminal can obtain the service information of the service through blind detection of the PDCCH.

In some embodiments, the traffic transmission module is further configured to, in a case that the traffic is a non-specified type of traffic, send indication information through a PDCCH channel to instruct the user terminal to detect a physical downlink shared channel, PDSCH, on specified resources, and send traffic information of the traffic through a PDSCH channel, so that the user terminal obtains traffic information of the traffic by detecting the PDSCH channel on the specified resources.

In some embodiments, the specified type of traffic is ultra-high reliable ultra-low latency communication URLLC traffic.

In some embodiments, when transmitting the service information of the service through the PDCCH channel, the service transmission module modifies the ACK/NACK feedback request indicator for the PDSCH in the DCI into an ACK/NACK feedback request indicator for the PDCCH.

According to an aspect of one or more embodiments of the present disclosure, there is provided a traffic transmission apparatus including: a memory configured to store instructions;

a processor coupled to the memory, the processor configured to perform a method according to any of the embodiments described above based on instructions stored in the memory.

In accordance with an aspect of one or more embodiments of the present disclosure, there is provided a base station including: a traffic transmission apparatus as claimed in any preceding embodiment.

In accordance with an aspect of one or more embodiments of the present disclosure, there is provided a traffic transmission system including: the base station and the user terminal according to any of the embodiments above are configured to perform blind detection on a physical downlink control channel PDCCH to obtain service information transmitted by the base station through the PDCCH.

In some embodiments, the user terminal is further configured to, after the PDCCH channel detects the indication information sent by the base station, detect a PDSCH channel on the specified resource according to the execution information to obtain the traffic information transmitted by the base station through the PDSCH channel.

According to another aspect of one or more embodiments of the present disclosure, there is provided a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement a method as described above in relation to any one of the embodiments.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is an exemplary flowchart of a service transmission method according to an embodiment of the present disclosure;

fig. 2 is an exemplary flowchart of a service transmission method according to another embodiment of the present disclosure;

fig. 3 is an exemplary block diagram of a traffic transmitting apparatus according to an embodiment of the present disclosure;

fig. 4 is an exemplary block diagram of a traffic transmitting apparatus according to another embodiment of the present disclosure;

fig. 5 is an exemplary block diagram of a base station of one embodiment of the present disclosure;

fig. 6 is an exemplary block diagram of a traffic transmission system according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

Fig. 1 is an exemplary flowchart of a service transmission method according to an embodiment of the present disclosure. In some embodiments, the method steps of this embodiment may be performed by a traffic transmitting device.

In step 101, the type of traffic that needs to be sent is identified.

In step 102, if the service is a service of a specific type, the service information is transmitted through a PDCCH (Physical Downlink Control Channel), so that the user equipment obtains the service information by blind detecting the PDCCH.

In some embodiments, the specified type of service is URLLC (Ultra-Reliable Low-Latency Communication) service or other service with strict Latency requirements.

In the service transmission method provided by the above embodiment of the present disclosure, a one-step transmission mechanism is adopted for a low-latency high-reliability service, that is, the service is directly transmitted through a PDCCH channel, so that a user can obtain corresponding service information directly by blindly detecting the PDCCH channel. Therefore, the transmission efficiency and the transmission reliability of the service information are effectively improved.

Fig. 2 is an exemplary flowchart of a service transmission method according to another embodiment of the present disclosure. In some embodiments, the method steps of this embodiment may be performed by a traffic transmitting device.

In step 201, the type of traffic that needs to be sent is identified.

In step 202, it is determined whether the service type is URLLC service.

If the service type is a URLLC service, executing step 203; if the service type is non-URLLC service, step 204 is executed.

In step 203, the service information is transmitted through the PDCCH channel, so that the user terminal obtains the service information by blind detecting the PDCCH channel.

In step 204, indication information is sent through the PDCCH to instruct the ue to detect PDSCH (Physical Downlink Shared Channel) on the specified resource.

In step 205, the service information of the service is transmitted through the PDSCH channel, so that the user terminal obtains the service information of the service by detecting the PDSCH channel on the specified resource.

That is, for URLLC traffic, a one-step transmission mode is adopted, and for non-URLLC traffic, a two-step transmission mode is adopted.

It should be noted that, when the one-step transmission mode is adopted, that is, the service Information of the service is directly transmitted through the PDCCH channel, the feedback request indicator from the PDSCH to the HARQ in the DCI (Downlink Control Information) is modified to the feedback request indicator from the PDCCH to the HARQ. In addition, other information in the DCI may also be adjusted.

Rel-15 DCI format 1_0

Identifier for DCI formats → removable

Frequency domain resource assignment → removable

Time domain resource assignment → removable

VRB-to-PRB mapping → removable

Modulation and coding scheme → removable

New data indicator → Reserve

Rednancy version → removable or retainable

HARQ process number → removable or reserved

Downlink alignment index → removable or retained

TPC command for scheduled PUCCH → removable or reserved

PUCCH resource indicator → removable or reserved

Modifying acknowledgement ACK/negative acknowledgement NACK feedback request indicator for PDSCH in downlink control information DCI to acknowledgement for PDCCH

The ACK/NACK feedback request indicator. Namely:

PDSCH-to-HARQ _ feedback timing indicator → amendment

PDCCH-to-HARQ_feedback timing indicator

Fig. 3 is an exemplary block diagram of a service transmission apparatus according to an embodiment of the present disclosure. As shown in fig. 3, the service transmission apparatus includes a service identification module 31 and a service transmission module 32.

The service identification module 31 is configured to identify the type of service that needs to be sent.

The service transmission module 32 is configured to transmit service information through the PDCCH channel if the service is a specific type of service, so that the user terminal obtains the service information through blind detection of the PDCCH channel.

In some embodiments, the specified type of traffic is URLLC traffic.

In the service transmission apparatus provided in the foregoing embodiment of the present disclosure, a one-step transmission mechanism is adopted for a low-latency high-reliability service, that is, the service is directly transmitted through a PDCCH channel, so that a user can directly obtain corresponding service information by blindly detecting the PDCCH channel. Therefore, the transmission efficiency and the transmission reliability of the service information are effectively improved.

In some embodiments, the traffic transmission module 32 is further configured to, in a case that the traffic is a non-specified type of traffic, transmit indication information through the PDCCH channel to instruct the user terminal to detect the PDSCH channel on the specified resource, and transmit traffic information through the PDSCH channel, so that the user terminal obtains the traffic information of the traffic by detecting the PDSCH channel on the specified resource.

In some embodiments, when transmitting the traffic information of the traffic through the PDCCH channel, the traffic transmission module 32 modifies the feedback request indicator from the PDSCH to the HARQ in the downlink control information DCI into a feedback request indicator from the PDCCH to the HARQ.

Fig. 4 is an exemplary block diagram of a service transmission apparatus according to another embodiment of the present disclosure. As shown in fig. 4, the traffic transmission apparatus includes a memory 41 and a processor 42.

The memory 41 is used for storing instructions, the processor 42 is coupled to the memory 41, and the processor 42 is configured to execute the method according to any one of the embodiments in fig. 1 or fig. 2 based on the instructions stored in the memory.

As shown in fig. 4, the service transmission apparatus further includes a communication interface 43 for information interaction with other devices. Meanwhile, the device also comprises a bus 44, and the processor 42, the communication interface 43 and the memory 41 are communicated with each other through the bus 44.

The memory 41 may comprise a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 41 may also be a memory array. The storage 41 may also be partitioned, and the blocks may be combined into virtual volumes according to certain rules.

Further, the processor 42 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.

The present disclosure also relates to a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the instructions, when executed by a processor, implement a method according to any one of the embodiments shown in fig. 1 or fig. 2.

Fig. 5 is an exemplary block diagram of a base station of one embodiment of the present disclosure. As shown in fig. 5, the base station 51 is provided with a service transmission device 52. The service transmission device 52 is the service transmission device according to any one of the embodiments in fig. 3 or fig. 4.

Fig. 6 is an exemplary block diagram of a traffic transmission system according to an embodiment of the present disclosure. As shown in fig. 6, the system includes a base station 61 and a user terminal 62. The base station 61 is the base station according to any of the embodiments in fig. 5.

The user terminal 62 is configured to perform blind detection on a physical downlink control channel PDCCH to obtain traffic information transmitted by the base station through the PDCCH channel.

In some embodiments, the user terminal 62 is further configured to detect the PDSCH channel on the specified resource according to the execution information after the PDCCH channel detects the indication information sent by the base station, so as to obtain the traffic information transmitted by the base station through the PDSCH channel.

By implementing the method and the device, the transmission efficiency and the transmission reliability of the service information can be effectively improved.

In some embodiments, the functional unit modules described above can be implemented as a general purpose Processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (Digital Signal Processor, DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable Logic device, discrete Gate or transistor Logic, discrete hardware components, or any suitable combination thereof for performing the functions described in this disclosure.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A service transmission method comprises the following steps:

identifying the type of the service to be sent;

if the service is the specified type service, transmitting the service information of the service through a Physical Downlink Control Channel (PDCCH) so that a user terminal can obtain the service information of the service through blind detection of the PDCCH, wherein the specified type service is an ultra-high reliable ultra-low time delay communication (URLLC) service;

if the service is a non-specified type service, sending indication information through a PDCCH (physical Downlink control channel) to indicate a user terminal to detect a PDSCH (physical Downlink shared channel) on specified resources;

sending the service information of the service through a PDSCH channel so that a user terminal can obtain the service information of the service by detecting the PDSCH channel on the appointed resource;

and when the service information of the service is transmitted through the PDCCH channel, the acknowledgement ACK/negative acknowledgement NACK feedback request indicator aiming at the PDSCH in the downlink control information DCI is modified into the acknowledgement ACK/negative acknowledgement NACK feedback request indicator aiming at the PDCCH.

2. A traffic transmission apparatus comprising:

the service identification module is configured to identify the type of the service needing to be sent;

a service transmission module configured to transmit service information of the service through a physical downlink control channel PDCCH if the service is a specific type service, so that a user terminal obtains the service information of the service by blind-detecting the PDCCH, and transmit indication information through the PDCCH to indicate the user terminal to detect a physical downlink shared channel PDSCH on a specific resource and transmit the service information of the service through a PDSCH channel under the condition that the service is a non-specific type service, so that the user terminal obtains the service information of the service by detecting the PDSCH channel on the specific resource, wherein the specific type service is an ultra-reliable ultra-low latency communication URLLC service, and when the service information of the service is transmitted through the PDCCH channel, a acknowledgement ACK/negative acknowledgement NACK feedback indicator for the PDSCH in downlink control information DCI is modified into a acknowledgement ACK/negative acknowledgement NACK feedback indicator for the PDCCH.

3. A traffic transmission device, comprising:

a memory configured to store instructions;

a processor coupled to the memory, the processor configured to perform implementing the method of claim 1 based on instructions stored by the memory.

4. A base station, comprising: traffic transmission arrangement according to any of claims 2-3.

5. A traffic transmission system comprising: the base station of claim 4, and

the user terminal is configured to perform blind detection on a Physical Downlink Control Channel (PDCCH) to obtain service information transmitted by the base station through the PDCCH, and after the PDCCH detects indication information sent by the base station, a Physical Downlink Shared Channel (PDSCH) channel is detected on an appointed resource according to the indication information to obtain the service information transmitted by the base station through the PDSCH channel.

6. A computer readable storage medium, wherein the computer readable storage medium stores computer instructions which, when executed by a processor, implement the method of claim 1.