CN113938843B - Response feedback method, device, terminal and system for multicast service of 5G system - Google Patents
Response feedback method, device, terminal and system for multicast service of 5G system Download PDFInfo
- Publication number
- CN113938843B CN113938843B CN202111112115.6A CN202111112115A CN113938843B CN 113938843 B CN113938843 B CN 113938843B CN 202111112115 A CN202111112115 A CN 202111112115A CN 113938843 B CN113938843 B CN 113938843B
- Authority
- CN
- China
- Prior art keywords
- random access
- access channel
- configuration information
- feedback
- nack signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000004044 response Effects 0.000 title claims abstract description 16
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 claims abstract description 105
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 claims abstract description 105
- 238000004891 communication Methods 0.000 claims abstract description 52
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000004590 computer program Methods 0.000 claims description 12
- 230000003044 adaptive effect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008713 feedback mechanism Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a response feedback method, a system, a device and a medium for multicast service of a 5G system, wherein the method comprises the following steps: the 5G access network issues communication data, wherein the communication data comprises feedback configuration information, so that the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information after receiving the feedback configuration information; and the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the scheduling of multicast trunking transmission if the NACK signal exists on the random access channel. The invention provides a scheme for bearing NACK signals through the PRACH resources of the random access channel so as to support adaptive scheduling, optimize the allocation of wireless resources and improve the utilization rate of the wireless resources. The invention can be widely applied to the technical field of wireless communication systems.
Description
Technical Field
The present invention relates to the technical field of wireless communication systems, and in particular, to a method, a system, an apparatus, and a medium for response feedback of multicast services in a 5G system.
Background
Multicast Broadcast Service (MBS) is a novel characteristic under study of the 5G R17 standard, and aims to realize efficient distribution of downlink Broadcast or Multicast services through a Point-to-Multipoint (PTM) communication mode. Compared with a Point-to-Point (PTP) communication method, PTM does not increase resource allocation due to the increase of listening group members, and is more efficient in resource utilization.
Since PTM is a one-to-many communication method, the manner of responding and feeding back data is greatly different from PTP. Terminals receiving MBS data do not necessarily need to establish a dedicated connection, but it is neither necessary nor practical for the network to configure dedicated PUCCH resources for each terminal listening to the service, and to collect HARQ-ACK information. According to the current standard development of 3gpp r17, although information of negative acknowledgement NACK can be fed back on PUCCH resources for CONNECTED (RRC _ CONNECTED) terminals, and the network adjusts the transmission format of broadcast or multicast according to whether NACK exists, the mechanism of acknowledgement feedback is not determined for IDLE (RRC _ IDLE) and INACTIVE (RRC _ INACTIVE) terminals.
Disclosure of Invention
To solve at least one of the technical problems in the prior art to a certain extent, an object of the present invention is to provide a method, a system, an apparatus and a medium for response feedback of multicast service in a 5G system
The technical scheme adopted by the invention is as follows:
a response feedback method of multicast service in 5G system includes the following steps:
the 5G access network issues communication data, wherein the communication data comprises feedback configuration information, so that the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information after receiving the feedback configuration information;
and the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the scheduling of multicast trunking transmission if the NACK signal exists on the random access channel.
Further, the issuing of the communication data by the 5G access network includes:
the 5G access network takes the preset common wave beam as a unit, schedules the transmission of the multicast control channel through the common control resource set and issues communication data.
Further, the feedback configuration information includes a condition for triggering NACK feedback and a random access channel resource for carrying NACK signal feedback.
Further, the condition for triggering NACK feedback is whether the block error rate is greater than a preset threshold;
after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information, and the method comprises the following steps:
after receiving the feedback configuration information, the terminal calculates a block error rate and judges whether the block error rate is greater than a preset threshold value;
and if the block error rate is judged to be greater than a preset threshold value, transmitting the NACK signal on the random access channel according to the random access channel resource.
Further, the determining whether the NACK signal fed back by the terminal exists on the random access channel, and if so, adjusting scheduling of multicast trunking transmission includes:
if the random access channel has NACK signals, the 5G access network adjusts the multicast code rate;
and if the random access channel does not contain the NACK signal, the 5G access network keeps the current scheduling format or adjusts the multicast code rate up.
The other technical scheme adopted by the invention is as follows:
a response feedback method of multicast service in 5G system includes the following steps:
receiving communication data issued by a 5G access network, wherein the communication data comprises feedback configuration information;
and judging whether a NACK signal is fed back through a random access channel or not according to the feedback configuration information, so that after the 5G access network receives the signal on the random access channel, whether the NACK signal fed back by the terminal exists on the random access channel or not is judged, and if so, the scheduling of multicast trunking transmission is adjusted.
The other technical scheme adopted by the invention is as follows:
a response feedback method of multicast service in 5G system includes the following steps:
the 5G access network issues communication data, wherein the communication data comprises feedback configuration information;
the terminal receives the feedback configuration information and judges whether a NACK signal is fed back through a random access channel or not according to the feedback configuration information;
and the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel or not, and adjusts the scheduling of multicast trunking transmission if the NACK signal exists on the random access channel.
The invention adopts another technical scheme that:
a base station apparatus comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to implement the steps of the method described above.
The other technical scheme adopted by the invention is as follows:
a terminal comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to perform the steps of the method described above.
The invention adopts another technical scheme that:
a communication system includes a base station apparatus and a terminal;
the base station equipment is used for sending communication data by adopting a 5G access network, receiving signals on the random access channel, judging whether NACK signals fed back by the terminal exist on the random access channel, and if so, adjusting the scheduling of multicast trunking transmission; the communication data comprises feedback configuration information;
and the terminal is used for judging whether to feed back a NACK signal through a random access channel or not according to the feedback configuration information after receiving the feedback configuration information.
The beneficial effects of the invention are: the invention provides a scheme for bearing NACK signals through the random access channel (PRACH) resources so as to support adaptive scheduling, optimize the allocation of wireless resources and improve the utilization rate of the wireless resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description is made on the drawings of the embodiments of the present invention or the related technical solutions in the prior art, and it should be understood that the drawings in the following description are only for convenience and clarity of describing some embodiments in the technical solutions of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a response feedback method for multicast service in a 5G system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a terminal feeding back a NACK signal to a network in an embodiment of the present invention;
fig. 3 is a schematic diagram of the terminal not feeding back a NACK signal to the network in the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
PTM communication schedules downlink broadcast signals with uniform configuration, and if it is to be ensured that all terminals under a certain beam coverage in a 5G cell receive broadcast signals correctly, the scheduled code rate should be restricted by the terminal with the worst channel condition under the beam coverage. In an ideal state, the scheduling is exactly matched with the channel condition, and the system ensures the communication reliability of all terminals by using the right resources. In the current 3GPP standard, a terminal in an RRC _ CONNECTED state is notified to a network in a manner of feeding back NACK information by using a PUCCH resource. On the other hand, for a terminal in RRC _ IDLE/RRC _ INACTIVE state, uplink synchronization is not completed, and a condition for configuring the PUCCH is not satisfied.
In order to solve the above problem, based on the characteristics of an IDLE (RRC _ IDLE) terminal and an INACTIVE (RRC _ INACTIVE) terminal, for MBS communication of 5G NR, this embodiment designs an MBS feedback mechanism suitable for the RRC _ IDLE/RRC _ INACTIVE terminal, and provides a method for carrying NACK information through PRACH resources to support adaptive scheduling.
The reason for using PRACH as NACK signal bearer is that a terminal in RRC _ IDLE/RRC _ INACTIVE state does not implement uplink synchronization and cannot transmit information to a network through a PUCCH or PUSCH channel, whereas PRACH as a first uplink channel of the uplink has strong inclusion property, and a longer cyclic prefix CP thereof can be suitable for signals of terminals at different distances. The access network only needs to detect whether the NACK signal exists or not, so that the superposition of the feedback signals of a plurality of terminals does not influence the detection judgment, and the access network has better anti-interference performance.
The response feedback method of the multicast service of the 5G system is suitable for an MBS feedback mechanism of an RRC _ IDLE/RRC _ INACTIVE terminal and comprises the following steps:
s101, when PTM communication of a group is established, broadcasting configuration information of a feedback channel to each mobile terminal of the group, wherein the configuration information comprises trigger conditions for starting NACK feedback and PRACH resources for bearing the feedback information.
S102, according to configuration, the group terminal determines whether the trigger condition is met according to the multicast receiving condition of the group terminal, and if yes, the PRACH signal carrying NACK information is transmitted to the network.
S103, the network adjusts the MBS transmission format according to whether the NACK information of the mobile terminals of the group is received.
S104, through the design of the response feedback mechanism of the multicast service of the 5G system, the base station can obtain the information of whether the terminal with poor receiving exists in the communication group through the feedback of the terminal, and further, the code rate is continuously corrected. By applying the design, the self-adaptive scheduling of the MBS service can be realized for the terminal in the RRC _ IDLE/RRC _ INACTIVE state. Compared with a system without a feedback mode, the self-adaptive scheduling optimizes the allocation of wireless resources and improves the utilization rate of the wireless resources.
As shown in fig. 1, this embodiment provides a response feedback method for multicast service in 5G system, where step S201 and step S203 are executed by a base station device, and step S202 is executed by a terminal, and the specific steps are as follows:
s201, the 5G access network issues communication data, and the communication data comprises feedback configuration information.
When one-to-many communication of a group is established, the 5G access network schedules transmission of a multicast control channel MCCH through a common control resource set (common core) in a unit of a common beam in a cell. Feedback configuration information corresponding to the beam should be included in the MCCH.
The feedback configuration information includes: the conditions for triggering NACK feedback and the PRACH resource carrying NACK feedback information (i.e. the random access channel resource carrying NACK signal feedback). In some optional embodiments, a block error rate (BLER) threshold is used as a condition for triggering NACK feedback, for example, when it is detected that the block error rate (BLER) is greater than a preset threshold, the condition for triggering NACK signal feedback is met. It should be noted here that, in addition to the block error rate threshold, an error rate threshold or the like may be used as a condition for triggering NACK feedback.
In some optional embodiments, the PRACH resources carrying NACK feedback information include: configuration index (configuration index), start root sequence (root sequence), preamble index (preamble index), associated beam reference signal. Each multicast cluster group corresponds to a different combination of configuration index, start root sequence and preamble index within each beam of each cell. The feedback resources do not overlap with PRACH resources used for random access, system information scheduling, beam recovery in the cell. The associated beam reference signal corresponding to the feedback PRACH may be an SSB or a CSI-RS, and if the associated beam reference signal is absent, the associated beam reference signal is a beam where CORESET is located by default.
S202, the terminal receives the feedback configuration information and judges whether to feed back the NACK signal through the random access channel according to the feedback configuration information.
The terminal calculates the packet loss rate BLER according to the feedback configuration, and determines whether to transmit the feedback PRACH signal to the network
In some optional embodiments, the BLER transmitted by the MBS is counted in a certain period, that is, the success rate of decoding the corresponding PDSCH after receiving the multicast scheduling, and the length of the counting period may not be standardized.
And if the statistical BLER exceeds a threshold value, triggering the transmission of the feedback PRACH. And determining to feed back PRACH resources according to the signaling configuration and transmitting signals. The configuration index, starting root sequence and preamble index of PRACH are from the above configuration. Other configurations of PRACH such as frequency domain location and zero correlation zone configuration, two parameters msg 1-freqystart and zeroCorrelationZoneConfig from RACH-ConfigGeneric. The feedback PRACH does not configure multiple frequency domain resources, i.e., msg1-FDM = 'one'.
The beam used by the PRACH is determined according to the associated beam reference signal in the configuration signaling, and if there is no parameter configuration, a beam corresponding to the CORESET including the scheduling PDCCH is used.
S203, the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the dispatching of the multicast trunking transmission if the NACK signal exists on the random access channel.
And the access network receives the fed back PRACH signal on the preset resource and judges whether a terminal with NACK feedback exists in the communication group. Since the feedback PRACH is only used to notify the network NACK information and is not used for random access, the signal detection may omit detection of a timing advance (timing advance), and only needs to determine whether a peak value exceeding a detection threshold occurs in a zero correlation region. The situation that multiple terminals report NACK information through PRACH resources at the same time may occur in one communication group. Since the receiver only determines whether NACK exists, the reception determination result is not affected.
The access network adjusts the scheduling of the multicast cluster transmission according to whether the NACK exists:
1) If NACK occurs, it indicates that there is a terminal with poor receiving performance in the cluster communication group, and the multicast code rate needs to be adjusted downwards. As shown in fig. 2, the UE represents a terminal, such as a mobile phone, a computer, a tablet, etc., and the nodeb represents a 5G base station; the 5G base station transmits multicast configuration information to the terminal, the terminal calculates the block error rate, and if the block error rate is greater than a preset threshold value, NACK signals are fed back through the PRACH; and the 5G base station receives the PRACH information, detects that a NACK signal exists and a terminal with poor receiving performance exists in the group communication group, then adjusts down the multicast code rate and transmits data by adopting a format 2.
2) If not, it indicates that there is no terminal with poor receiving performance in the trunking communication group, and the access network may maintain the current scheduling format or attempt to adjust the multicast code rate up. As shown in fig. 3, after the 5G base station issues the multicast configuration information to the multiple terminals, no NACK signal is detected on the PRACH, which indicates that there is no terminal with poor receiving performance in the trunking communication group, and format 1 is maintained for data transmission; or the multicast code rate is adjusted up, and the data transmission is carried out by adopting the format 3.
From the stability of the system, the trigger condition of the down-regulation code rate and the trigger condition of the up-regulation code rate are asymmetric, the former is more sensitive, and the latter is more dull, so that the reliability of transmission is preferentially ensured. And determining a beam corresponding to MBS transmission according to the resource of the feedback PRACH, and adjusting the DCI transmission format in the corresponding CORESET.
To sum up, the present embodiment provides a response feedback method for multicast services in a 5G system, which is applied to MBS services to RRC _ IDLE/RRC _ INACTIVE terminals. The method comprises the following steps: when the PTM communication of the group is established, the 5G access network schedules the transmission of the multicast control channel MCCH through a common control resource set (common core) with a common beam in a cell as a unit, wherein the MCCH should include feedback configuration information corresponding to the beam; the terminal calculates the packet loss rate BLER according to the feedback configuration and determines whether to transmit a feedback PRACH signal to the network; the access network receives the fed back PRACH signal on the preset resource and judges whether a terminal with NACK feedback exists in the communication group; the access network adjusts the scheduling of the multicast trunking transmission according to whether the NACK exists. The method of the embodiment performs adaptive scheduling on MBS service transmission of the RRC _ IDLE/RRC _ INACTIVE terminal by the 5G system, and the scheduling can optimize the allocation of wireless resources and improve the utilization rate of the wireless resources.
Referring to fig. 2 and fig. 3, the present embodiment further provides a base station device, which includes a memory, a processor, and a computer program stored in the memory, where the processor executes the computer program to implement the following steps:
s301, the 5G access network issues communication data, and the communication data comprises feedback configuration information, so that after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information;
s302, the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the dispatching of the multicast cluster transmission if the NACK signal exists on the random access channel.
Referring to fig. 2 and fig. 3, the present embodiment further provides a terminal (including a mobile phone, a tablet, a computer, etc.), which includes a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the following steps:
s401, receiving communication data issued by a 5G access network, wherein the communication data comprises feedback configuration information;
s402, judging whether a NACK signal is fed back through a random access channel according to the feedback configuration information so that after the 5G access network receives the signal on the random access channel, judging whether the NACK signal fed back by the terminal exists on the random access channel, and if so, adjusting the scheduling of multicast trunking transmission.
Referring to fig. 2 and fig. 3, the present embodiment further provides a communication system, including a base station device and a terminal;
the base station equipment is used for sending communication data by adopting a 5G access network, receiving signals on a random access channel, judging whether NACK (negative acknowledgement) signals fed back by a terminal exist on the random access channel, and adjusting the scheduling of multicast trunking transmission if the NACK signals exist on the random access channel; the communication data comprises feedback configuration information;
and the terminal is used for judging whether to feed back the NACK signal through the random access channel according to the feedback configuration information after receiving the feedback configuration information.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the described functions and/or features may be integrated in a single physical device and/or software module, or one or more functions and/or features may be implemented in a separate physical device or software module. It will also be understood that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those of ordinary skill in the art will be able to practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the foregoing description of the specification, reference to the description of "one embodiment/example," "another embodiment/example," or "certain embodiments/examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A response feedback method of multicast service in 5G system is characterized in that the method comprises the following steps:
the 5G access network issues communication data, wherein the communication data comprises feedback configuration information, so that the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information after receiving the feedback configuration information;
the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the scheduling of multicast trunking transmission if the NACK signal exists on the random access channel;
the determining whether the random access channel has a NACK signal fed back by the terminal, and if so, adjusting scheduling of multicast trunking transmission includes:
if the random access channel has NACK signals, the 5G access network adjusts the multicast code rate down;
if the random access channel does not contain the NACK signal, the 5G access network keeps the current scheduling format or adjusts the multicast code rate;
the feedback configuration information comprises a condition for triggering NACK feedback and a random access channel resource for bearing NACK signal feedback;
the condition for triggering NACK feedback is whether the block error rate is greater than a preset threshold value;
after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information, and the method comprises the following steps:
after receiving the feedback configuration information, the terminal calculates a block error rate and judges whether the block error rate is greater than a preset threshold value;
and if the block error rate is judged to be larger than a preset threshold value, transmitting the NACK signal on the random access channel according to the random access channel resource.
2. The method according to claim 1, wherein the sending communication data by the 5G access network comprises:
the 5G access network takes the preset common wave beam as a unit, schedules the transmission of the multicast control channel through the common control resource set and issues communication data.
3. A response feedback method of multicast service in 5G system is characterized in that the method comprises the following steps:
receiving communication data issued by a 5G access network, wherein the communication data comprises feedback configuration information;
judging whether a NACK signal is fed back through a random access channel or not according to the feedback configuration information, so that after the 5G access network receives the signal on the random access channel, whether the NACK signal fed back by the terminal exists on the random access channel or not is judged, and if so, the scheduling of multicast trunking transmission is adjusted; the judging whether the random access channel has a NACK signal fed back by the terminal, and if so, adjusting the scheduling of multicast trunking transmission, including:
if the random access channel has NACK signals, the 5G access network adjusts the multicast code rate down;
if the random access channel does not have the NACK signal, the 5G access network keeps the current scheduling format or adjusts the multicast code rate;
the feedback configuration information comprises a condition for triggering NACK feedback and a random access channel resource for bearing NACK signal feedback;
the condition for triggering NACK feedback is whether the block error rate is greater than a preset threshold value;
after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information, and the method comprises the following steps:
after receiving the feedback configuration information, the terminal calculates a block error rate and judges whether the block error rate is greater than a preset threshold value;
and if the block error rate is judged to be greater than a preset threshold value, transmitting the NACK signal on the random access channel according to the random access channel resource.
4. A response feedback method of multicast service in 5G system is characterized by comprising the following steps:
the 5G access network issues communication data, wherein the communication data comprises feedback configuration information;
the terminal receives the feedback configuration information and judges whether a NACK signal is fed back through a random access channel or not according to the feedback configuration information;
the 5G access network receives the signal on the random access channel, judges whether the NACK signal fed back by the terminal exists on the random access channel, and adjusts the scheduling of multicast trunking transmission if the NACK signal exists on the random access channel;
the determining whether the random access channel has a NACK signal fed back by the terminal, and if so, adjusting scheduling of multicast trunking transmission includes:
if the random access channel has NACK signals, the 5G access network adjusts the multicast code rate down;
if the random access channel does not contain the NACK signal, the 5G access network keeps the current scheduling format or adjusts the multicast code rate;
the feedback configuration information comprises a condition for triggering NACK feedback and a random access channel resource for bearing NACK signal feedback;
the condition for triggering NACK feedback is whether the block error rate is greater than a preset threshold value;
after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information, and the method comprises the following steps:
after receiving the feedback configuration information, the terminal calculates a block error rate and judges whether the block error rate is greater than a preset threshold value;
and if the block error rate is judged to be greater than a preset threshold value, transmitting the NACK signal on the random access channel according to the random access channel resource.
5. A base station device comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the steps of the method of any of claims 1-2.
6. A terminal comprising a memory, a processor and a computer program stored on the memory, characterized in that the processor executes the computer program to implement the steps of the method of claim 3.
7. A communication system comprising a base station apparatus and a terminal;
the base station equipment is used for sending communication data by adopting a 5G access network, receiving signals on a random access channel, judging whether NACK signals fed back by the terminal exist on the random access channel, and if so, adjusting the scheduling of multicast trunking transmission; the communication data comprises feedback configuration information;
the terminal is used for judging whether a NACK signal is fed back through a random access channel or not according to the feedback configuration information after receiving the feedback configuration information;
the determining whether the random access channel has a NACK signal fed back by the terminal, and if so, adjusting scheduling of multicast trunking transmission includes:
if the random access channel has NACK signals, the 5G access network adjusts the multicast code rate down;
if the random access channel does not have the NACK signal, the 5G access network keeps the current scheduling format or adjusts the multicast code rate;
the feedback configuration information comprises a condition for triggering NACK feedback and a random access channel resource for bearing NACK signal feedback;
the condition for triggering NACK feedback is whether the block error rate is greater than a preset threshold value;
after receiving the feedback configuration information, the terminal judges whether to feed back a NACK signal through a random access channel according to the feedback configuration information, and the method comprises the following steps:
after receiving the feedback configuration information, the terminal calculates a block error rate and judges whether the block error rate is greater than a preset threshold value;
and if the block error rate is judged to be larger than a preset threshold value, transmitting the NACK signal on the random access channel according to the random access channel resource.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111112115.6A CN113938843B (en) | 2021-09-23 | 2021-09-23 | Response feedback method, device, terminal and system for multicast service of 5G system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111112115.6A CN113938843B (en) | 2021-09-23 | 2021-09-23 | Response feedback method, device, terminal and system for multicast service of 5G system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113938843A CN113938843A (en) | 2022-01-14 |
| CN113938843B true CN113938843B (en) | 2023-04-18 |
Family
ID=79276274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111112115.6A Active CN113938843B (en) | 2021-09-23 | 2021-09-23 | Response feedback method, device, terminal and system for multicast service of 5G system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113938843B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572705A (en) * | 2010-12-27 | 2012-07-11 | 上海贝尔股份有限公司 | User feedback-based scheduling method and equipment in multicast system and multicast system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860411B (en) * | 2009-04-13 | 2013-03-06 | 电信科学技术研究院 | Resource allocation method and base station in high speed downlink grouping access |
| US10841117B2 (en) * | 2015-04-15 | 2020-11-17 | Lg Electronics Inc. | Method for performing feedback by terminal in wireless communication system and apparatus therefor |
| CN106211093B (en) * | 2015-05-07 | 2019-07-16 | 成都鼎桥通信技术有限公司 | Group service transmission method and device based on PRACH |
| US10833829B2 (en) * | 2016-05-03 | 2020-11-10 | Lg Electronics Inc. | Method of transmitting ACK/NACK message in wireless communication system and terminal using same method |
| US11265132B2 (en) * | 2016-09-21 | 2022-03-01 | Kyocera Corporation | Enhancing utilization efficiency of radio resources in MBMS |
| US11477687B2 (en) * | 2019-08-29 | 2022-10-18 | Qualcomm Incorproated | Delivery of broadcast services using different broadcast/multicast radio bearer modes |
-
2021
- 2021-09-23 CN CN202111112115.6A patent/CN113938843B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572705A (en) * | 2010-12-27 | 2012-07-11 | 上海贝尔股份有限公司 | User feedback-based scheduling method and equipment in multicast system and multicast system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113938843A (en) | 2022-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2941932B1 (en) | Multiple access scheme for multi-channels of a network with a limited link budget | |
| US9949258B2 (en) | Method and arrangement for adapting guard time based on timing advance | |
| CN115412216B (en) | Data transmission method and device | |
| US10735914B2 (en) | Methods and apparatus for multicast or broadcast transmission | |
| EP3509329B1 (en) | Multicast service sending method and system | |
| US8144636B2 (en) | Methods for sending small packets in a peer-to-peer (P2P) network | |
| EP2078388B1 (en) | Method and arrangement for transmitting cqi on the uplink | |
| CN111770578B (en) | Resource determination method, device and computer readable storage medium | |
| US9036485B2 (en) | Method and apparatus for performing client cooperation transmission through a group resource allocation scheme in a wireless access system | |
| CN108259144B (en) | Information transmission method, terminal and network equipment | |
| KR20100138812A (en) | Method for transmiting request of retransmission for erroneous mbms packet and method for retransmitting erroneous packet | |
| EP3493628B1 (en) | Determination of a signal and/or a function of a pucch for transmission by a user equipment | |
| US20220007397A1 (en) | Information sending method and apparatus, information receiving method and apparatus, base station, terminal, and communication system | |
| CN110583082A (en) | Method and apparatus for identifying uplink signal transmission timing in wireless communication system | |
| US10594434B2 (en) | Feedback signaling management | |
| WO2022143772A1 (en) | Data transmission method and device, and storage medium | |
| US8428042B1 (en) | Feedback mechanisms for multicast/broadcast service in wireless communication networks | |
| US10985866B2 (en) | Mobile communication transmission using flexible frame structure with variable MCS and TTI length | |
| CN111432371A (en) | Communication method and device | |
| CN113938843B (en) | Response feedback method, device, terminal and system for multicast service of 5G system | |
| EP2568648B1 (en) | Method and system for minimizing collisions of messages responsive to multi- or broadcast messages in a radio communication system | |
| CN111586710B (en) | Communication method and device | |
| CN118020361A (en) | Method and system for managing multicast communications in a wireless communication network | |
| CN113056018A (en) | Control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |