CN113015212B - Activation method, equipment and storage medium for repeated transmission of data packet - Google Patents

Activation method, equipment and storage medium for repeated transmission of data packet Download PDF

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Publication number
CN113015212B
CN113015212B CN201911327841.2A CN201911327841A CN113015212B CN 113015212 B CN113015212 B CN 113015212B CN 201911327841 A CN201911327841 A CN 201911327841A CN 113015212 B CN113015212 B CN 113015212B
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bsr
rlc entity
type
entity
logical channel
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CN113015212A (en
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黄学艳
刘洋
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message

Abstract

The embodiment of the application discloses a method, equipment and a storage medium for activating repeated transmission of a data packet, wherein the method is applied to terminal equipment and comprises the following steps: determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions; determining a Medium Access Control (MAC) entity connected with at least one RLC entity; and the control MAC entity sends a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR. In this way, the terminal device sends the BSR to the network device through the MAC entity connected to the activated RLC entity to trigger the repeated sending of the data packet, so that the network device can directly determine the activated RLC according to the BSR, and the signaling overhead between the terminal device and the network device can be reduced.

Description

Activation method, equipment and storage medium for repeated transmission of data packet
Technical Field
The present application relates to communications technologies, and in particular, to a method, an apparatus, and a storage medium for activating repeated transmission of a data packet.
Background
Packet data convergence protocol repetition (Packet Data Convergence Protocol duplication, PDCP), also called packet repetition (Packet duplication), is a solution introduced in the Rel 15 standard. And transmitting the data copy of the PDCP transmitting end to two radio link layer control protocol (Radio Link Control, RLC) entities connected to the PDCP entity. PDCP multiplexing is used to guarantee highly reliable transmission, also at the cost of transmission resources. The PDCP multiplexing may be deactivated in case of good network quality or high data transmission reliability, and activated in case of poor network quality or low data transmission reliability. In the Rel 15 standard, PDCP multiplexing activation/deactivation is controlled by a network, and when the network needs to activate PDCP multiplexing, a medium access control (Medium Access Control, MAC) control element (MAC Control Element, MAC CE) is sent with activation information, so that a terminal device cannot trigger activation of PDCP multiplexing.
Disclosure of Invention
In order to solve the above technical problems, the embodiments of the present application are expected to provide a method, an apparatus, and a storage medium for activating repeated transmission of a data packet, so as to solve the technical problem how to trigger activation of PDCP multiplexing by a terminal apparatus.
The technical scheme of the application is realized as follows:
in a first aspect, a method for activating repeated transmission of a data packet is provided, and the method is applied to a terminal device, and includes:
determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
In the above solution, before the controlling the MAC entity to send the buffer status report BSR corresponding to the at least one RLC entity to the network device, the method further includes: determining a BSR type corresponding to a first RLC entity based on a logical channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity; and generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity.
In the above solution, the determining, based on the logical channel corresponding to the first RLC entity, the BSR type corresponding to the first RLC entity includes: when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type; and when the target logical channel corresponding to the first RLC entity solely belongs to one logical channel group, determining that the BSR type corresponding to the first RLC entity is the second type.
In the above solution, the generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity includes: when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel; when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs.
In the above solution, the controlling the MAC entity to send a buffer status report BSR corresponding to the at least one RLC entity to a network device includes: judging whether the MAC entity contains uplink resources for sending the BSR; if the MAC entity comprises uplink resources for sending the BSR, controlling the MAC entity to send the BSR corresponding to the at least one RLC entity by using the uplink resources; if the MAC entity does not contain the uplink resource for sending the BSR, applying for the uplink resource for sending the BSR to the network equipment; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment by utilizing the uplink resources allocated by the network equipment.
In the above solution, the applying for sending the uplink resource of the BSR to the network device includes: sending an uplink scheduling request message to network equipment; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment; and receiving a resource allocation message issued by the network equipment, and determining uplink resources allocated by the network equipment based on the resource allocation message.
In a second aspect, there is provided a method for activating repeated transmission of a data packet, applied to a network device, the method comprising:
receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by a terminal device; wherein, the BSR is a BSR corresponding to at least one radio link layer control protocol RLC entity for performing packet retransmission;
determining the at least one RLC entity activated by the terminal device based on the BSR.
In the above scheme, the method further comprises: if the MAC entity does not contain the uplink resource for sending the BSR, receiving a BSR resource request sent by the terminal equipment; and responding to the BSR resource request, and distributing uplink resources for sending the BSR to the MAC entity.
In a third aspect, there is provided a terminal device comprising:
A first processing module for determining at least one radio link layer control protocol RLC entity for performing data packet retransmission;
the first processing module is further configured to determine a medium access control MAC entity to which the at least one RLC entity is connected;
and the control module is used for controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
In a fourth aspect, there is provided a network device comprising:
the communication module is used for receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by the terminal equipment; wherein, the BSR is a BSR corresponding to at least one radio link layer control protocol RLC entity for performing packet retransmission;
a second processing module, configured to determine, based on the BSR, the at least one RLC entity activated by the terminal device.
In a fifth aspect, there is provided another terminal device, including: a first processor and a first memory configured to store a computer program executable on the first processor, wherein the first processor is configured to perform the steps of the method of the first aspect described above when the computer program is executed.
In a sixth aspect, there is provided another network device comprising: a second processor and a second memory configured to store a computer program executable on the second processor, wherein the second processor is configured to perform the steps of the method of the second aspect described above when the computer program is executed.
In a seventh aspect, a computer readable storage medium is provided, on which a computer program is stored, wherein the computer program, when being executed by a processor, implements the steps of the aforementioned method.
By adopting the technical scheme, at least one radio link layer control protocol (RLC) entity for executing repeated transmission of the data packet is determined; determining a medium access control, MAC, entity to which the at least one RLC entity is connected; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR. In this way, the terminal device sends the BSR to the network device through the MAC entity connected to the activated RLC entity to trigger the repeated sending of the data packet, so that the network device can directly determine the activated RLC according to the BSR, and the signaling overhead between the terminal device and the network device can be reduced.
Drawings
Fig. 1 is a first flow chart of an activation method for data packet retransmission according to an embodiment of the present application;
fig. 2 is a second flow chart of an activation method for data packet retransmission according to an embodiment of the present application;
fig. 3 is a third flow chart of an activation method for data packet retransmission according to an embodiment of the present application;
fig. 4 is a fourth flowchart of an activation method for data packet retransmission according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an interaction flow of a communication system according to an embodiment of the present application;
fig. 6 is a schematic diagram of a first composition structure of a terminal device in an embodiment of the present application;
fig. 7 is a schematic diagram of a second composition structure of a terminal device in an embodiment of the present application;
fig. 8 is a schematic diagram of a first component structure of a network device according to an embodiment of the present application;
fig. 9 is a schematic diagram of a second component structure of a network device according to an embodiment of the present application.
Detailed Description
For a more complete understanding of the nature and the technical content of the embodiments of the present application, reference should be made to the following detailed description of embodiments of the application, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the application.
Example 1
The embodiment of the application provides a method for activating repeated transmission of a data packet, which is applied to terminal equipment, and fig. 1 is a first flow diagram of the method for activating repeated transmission of the data packet in the embodiment of the application; as shown in fig. 1, the method specifically may include:
Step 101: determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
step 102: determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
step 103: and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
Here, the execution subject of steps 101 to 103 may be a processor of the terminal device. The terminal device may be a mobile terminal or a fixed terminal having a communication function. Such as smartphones, personal computers (e.g., tablet, desktop, notebook, netbook, palmtop), mobile phones, e-book readers, portable multimedia players, audio/video players, cameras, virtual reality devices, wearable devices, etc.
In some embodiments, step 101 specifically includes: when the data packet retransmission condition is satisfied, determining at least one radio link layer control protocol (RLC) entity for performing data packet retransmission; wherein the data packet repeated transmission condition comprises at least one activation rule for activating the repeated transmission of the data packet.
In practical application, the packet retransmission condition includes at least one activation rule for activating packet retransmission. The activation rule is a rule for representing the transmission quality degradation of the transmission link of the original RLC, for example, the activation rule is that the packet loss rate of the transmission link of the original RLC is greater than a specified packet loss rate threshold; or the error rate of the transmission link for the original RLC is greater than a specified error rate threshold.
Specifically, when the link transmission quality is reduced during the data uploading process by the original RLC entity, and the status report shows that a plurality of packet losses or error transmission occur, the terminal needs to activate the spare RLC to perform auxiliary transmission.
In practical application, when the terminal needs to activate PDCP multiplexing, 1 or more of other configured RLC entities connected to the PDCP entity are activated for data uploading except for the original RLC entity initially corresponding to PDCP. Therefore, when the packet retransmission condition is satisfied, at least one radio link layer control protocol RLC entity for performing packet retransmission is determined, and data uploading is assisted by using the determined at least one RLC entity, thereby improving the reliability of packet transmission.
Under normal conditions, that is, without activating PDCP multiplexing, a data packet is transmitted to an original RLC entity, and after processing, the original RLC entity is sent to the MAC layer, where the MAC layer completes scheduling of data.
In the active case, that is, PDCP multiplexing is activated, one data packet is transmitted to more than two RLC entities, including the original RLC entity and at least one spare RLC entity. The different RLC entities may independently process and transfer the processed data packets to the MAC layer. In view of the MAC layer, the MAC layer is more than two independent data packets, the MAC layer does not need to distinguish the source of the data packets, and the MAC layer completes the scheduling of data for each data packet independently.
After determining the media access control MAC entity connected with the at least one RLC entity, the embodiment of the present application sends the BSR corresponding to the at least one RLC entity to the network device through the MAC entity, so that the network device directly determines, according to the BSR, that the terminal device has activated the at least one RLC entity for repeated transmission of the data packet, and determines, according to the BSR, how much data shared by the terminal device exists in the uplink buffer area to be sent.
In some embodiments, before the controlling the MAC entity to send the buffer status report BSR corresponding to the at least one RLC entity to the network device, the method further includes: determining a BSR type corresponding to a first RLC entity based on a logical channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity; and generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity.
That is, when generating the BSR corresponding to the RLC entity, the BSR type is determined according to the logical channel corresponding to the RLC entity, and then the BSR corresponding to the RLC entity is generated according to the BSR type.
By adopting the technical scheme, at least one radio link layer control protocol (RLC) entity for executing repeated transmission of the data packet is determined; determining a medium access control, MAC, entity to which the at least one RLC entity is connected; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR. In this way, the terminal device sends the BSR to the network device through the MAC entity to which the activated RLC entity is connected, so that the network device can directly determine the activated RLC according to the BSR, and the signaling overhead between the terminal device and the network device can be reduced.
On the basis of the above embodiments, the generation process of the BSR is further illustrated in the embodiment of the present application, and fig. 2 is a schematic second flow chart of an activation method for repeated transmission of a data packet in the embodiment of the present application; as shown in fig. 2, the method specifically includes:
Step 201: determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
in practical application, the packet retransmission condition includes at least one activation rule for activating packet retransmission. The activation rule is a rule for representing the transmission quality degradation of the transmission link of the original RLC, for example, the activation rule is that the packet loss rate of the transmission link of the original RLC is greater than a specified packet loss rate threshold; or the error rate of the transmission link for the original RLC is greater than a specified error rate threshold.
Specifically, when the link transmission quality is reduced during the data uploading process by the original RLC entity, and the status report shows that a plurality of packet losses or error transmission occur, the terminal needs to activate the spare RLC to perform auxiliary transmission.
In practical application, when the terminal needs to activate PDCP multiplexing, 1 or more of other configured RLC entities connected to the PDCP entity are activated for data uploading except for the original RLC entity initially corresponding to PDCP. Therefore, when the packet retransmission condition is satisfied, at least one radio link layer control protocol RLC entity for performing packet retransmission is determined, and data uploading is assisted by using the determined at least one RLC entity, thereby improving the reliability of packet transmission.
Step 202: determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
under normal conditions, that is, without activating PDCP multiplexing, a data packet is transmitted to an original RLC entity, and after processing, the original RLC entity is sent to the MAC layer, where the MAC layer completes scheduling of data.
In the active case, that is, PDCP multiplexing is activated, one data packet is transmitted to more than two RLC entities, including the original RLC entity and at least one spare RLC entity. The different RLC entities may independently process and transfer the processed data packets to the MAC layer. In view of the MAC layer, the MAC layer is more than two independent data packets, the MAC layer does not need to distinguish the source of the data packets, and the MAC layer completes the scheduling of data for each data packet independently.
Step 203: determining a BSR type corresponding to a first RLC entity based on a logical channel corresponding to the first RLC entity; wherein the first RLC entity is any RLC entity of the at least one RLC entity;
in some embodiments, the step specifically includes: when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type; and when the target logical channel corresponding to the first RLC entity solely belongs to one logical channel group, determining that the BSR type corresponding to the first RLC entity is the second type. Here, different BSR types correspond to different BSR formats.
Step 204: generating a BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity;
in some embodiments, the step specifically includes: when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel; when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs.
That is, when only one logical channel is included in the logical channel group, the identification information of the logical channel group may be used as the activation identification information of the RLC entity corresponding to the included logical channel; when the logical channel group includes a plurality of logical channels, a new BSR format needs to be established for the RLC entity, where the BSR includes identification information of the logical channel corresponding to the RLC entity.
For example, in one case, when the LCH corresponding to the configured RLC entity belongs to one logical channel group (Logical Channel Group, LCG) alone, that is, only one LCH exists in the LCG where the LCH exists, when the BSR reports that the LCG buffer is not 0, it indicates that the RLC corresponding to the LCH is activated.
At this time, the reporting type of the BSR may be short BSR (short BSR), short truncated BSR (short truncated BSR), LONG BSR (LONG BSR), LONG truncated (LONG truncated BSR).
In another case, when the LCH corresponding to the configured RLC entity and the other LCHs belong to the same LCG, when the BSR reports that the LCG buffer is not 0, it cannot be determined whether the RLC of the duplicate is activated.
At this time, a new BSR type needs to be introduced, and a reserved uplink logical channel ID needs to be occupied, and some unused IDs of the current protocol stack remain, and one of these IDs may be selected as the uplink logical channel ID. When the network device receives the uplink BSR MAC CE, it is determined that the terminal device has activated the duplicate.
Step 205: and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
In the embodiment of the application, after receiving the BSR, the network equipment directly determines that the terminal equipment has activated at least one RLC entity for repeated transmission of the data packet according to the BSR, and determines how much data shared by the terminal equipment exists in the uplink buffer zone to be transmitted according to the BSR.
In practical applications, when the MAC entity sends a BSR to the network device, the MAC entity needs to have uplink resources. Therefore, how to implement BSR transmission when the MAC entity does not have uplink resources is given on the basis of the above embodiment, fig. 3 is a third flow diagram of an activation method for repeated transmission of data packets in the embodiment of the present application, and as shown in fig. 3, the method specifically includes:
step 301: determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
in practical application, the packet retransmission condition includes at least one activation rule for activating packet retransmission. The activation rule is a rule for representing the transmission quality degradation of the transmission link of the original RLC, for example, the activation rule is that the packet loss rate of the transmission link of the original RLC is greater than a specified packet loss rate threshold; or the error rate of the transmission link for the original RLC is greater than a specified error rate threshold.
Specifically, when the link transmission quality is reduced during the data uploading process by the original RLC entity, and the status report shows that a plurality of packet losses or error transmission occur, the terminal needs to activate the spare RLC to perform auxiliary transmission.
In practical application, when the terminal needs to activate PDCP multiplexing, 1 or more of other configured RLC entities connected to the PDCP entity are activated for data uploading except for the original RLC entity initially corresponding to PDCP. Therefore, when the packet retransmission condition is satisfied, at least one radio link layer control protocol RLC entity for performing packet retransmission is determined, and data uploading is assisted by using the determined at least one RLC entity, thereby improving the reliability of packet transmission.
Step 302: determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
under normal conditions, that is, without activating PDCP multiplexing, a data packet is transmitted to an original RLC entity, and after processing, the original RLC entity is sent to the MAC layer, where the MAC layer completes scheduling of data.
In the active case, that is, PDCP multiplexing is activated, one data packet is transmitted to more than two RLC entities, including the original RLC entity and at least one spare RLC entity. The different RLC entities may independently process and transfer the processed data packets to the MAC layer. In view of the MAC layer, the MAC layer is more than two independent data packets, the MAC layer does not need to distinguish the source of the data packets, and the MAC layer completes the scheduling of data for each data packet independently.
Step 303: judging whether the MAC entity contains uplink resources for sending the BSR; if so, go to step 304; if not, go to step 305;
here, the method for determining whether the MAC entity includes uplink resources for transmitting the BSR may be that the MAC entity detects whether there is an activated leg, and if yes, the MAC entity includes uplink resources, and the BSR may transmit uplink data accompanying other logical channels; when the leg is not activated, the leg does not contain the uplink resource, and the uplink resource needs to be applied to the network side.
Step 304: if the MAC entity comprises uplink resources for sending the BSR, controlling the MAC entity to send the BSR corresponding to the at least one RLC entity by using the uplink resources;
step 305: if the MAC entity does not contain the uplink resource for sending the BSR, applying for the uplink resource for sending the BSR to the network equipment; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment by utilizing the uplink resources allocated by the network equipment.
In some embodiments, the network device may be applied for uplink resources by reporting an uplink scheduling request (Scheduling Request, SR).
Specifically, the applying for sending the uplink resource of the BSR to the network device includes: sending an uplink scheduling request message to network equipment; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment; and receiving a resource allocation message issued by the network equipment, and determining uplink resources allocated by the network equipment based on the resource allocation message.
In one case, the MAC entity corresponding to the RLC is connected to multiple RLC entities at the same time, and the BSR may be sent with data of other LCHs in an uplink manner. If the MAC entity does not have the uplink resource, the terminal equipment sends an SR report to apply for the BSR resource, and applies for transmitting the BSR resource.
In another case, only one RLC entity is connected to the MAC entity corresponding to the RLC, and when the terminal device activates the RLC, there is a high possibility that there is no uplink resource, and an SR is required to be sent to apply for BSR reporting resources.
Example two
The embodiment of the application also provides another method for activating the repeated transmission of the data packet, which is applied to the network equipment, and fig. 4 is a fourth flow diagram of the method for activating the repeated transmission of the data packet in the embodiment of the application; as shown in fig. 4, the method specifically may include:
step 401: receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by a terminal device; wherein, the BSR is a BSR corresponding to at least one radio link layer control protocol RLC entity for performing packet retransmission;
step 402: determining the at least one RLC entity activated by the terminal device based on the BSR.
After receiving the BSR, the network device directly determines, according to the BSR, that the terminal device has activated at least one RLC entity for repeated transmission of the data packet, and determines, according to the BSR, how much data shared by the terminal device is in the uplink buffer to be transmitted.
In practical applications, when the MAC entity sends a BSR to the network device, the MAC entity needs to have uplink resources. Thus, the method further comprises: if the MAC entity does not contain the uplink resource for sending the BSR, receiving a BSR resource request sent by the terminal equipment; and responding to the BSR resource request, and distributing uplink resources for sending the BSR to the MAC entity.
In some embodiments, the terminal device may apply for uplink resources to the network device by reporting an uplink scheduling request (Scheduling Request, SR).
Specifically, the network device receives an uplink scheduling request message sent by the terminal device; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment; and the resource allocation message is issued to the terminal equipment, so that the terminal equipment determines the uplink resource allocated by the network equipment based on the resource allocation message.
On the basis of the first embodiment and the second embodiment, fig. 5 is a schematic diagram of an interaction flow of the communication system in the embodiment of the present application, where, as shown in fig. 5, the communication system includes a terminal device and a network device, and a specific interaction flow includes:
step 501: the terminal equipment determines at least one RLC entity which is activated;
step 502: the terminal equipment determines a MAC entity connected with at least one RLC entity;
step 503: the terminal equipment controls the MAC entity to send at least one BSR corresponding to the RLC entity to the network equipment;
step 504: the network device determining at least one RLC entity that is activated from the BSR;
step 505: the network device acquires a data packet repeatedly transmitted by at least one RLC entity.
Example III
The embodiment of the application also provides a terminal device, as shown in fig. 6, which comprises:
a first processing module 601 configured to determine at least one radio link layer control protocol RLC entity for performing packet repeat transmissions;
the first processing module 601 is further configured to determine a medium access control MAC entity to which the at least one RLC entity is connected;
a control module 602, configured to control the MAC entity to send a buffer status report BSR corresponding to the at least one RLC entity to a network device, so that the network device determines the at least one RLC entity activated by the terminal device based on the received BSR.
In some embodiments, the terminal device further comprises: the generating module is used for determining the BSR type corresponding to the first RLC entity based on the logic channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity; and generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity.
In some embodiments, the generating module is specifically configured to determine that a BSR type corresponding to the first RLC entity is a first type when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group; and when the target logical channel corresponding to the first RLC entity solely belongs to one logical channel group, determining that the BSR type corresponding to the first RLC entity is the second type.
In some embodiments, the generating module is specifically configured to generate, when the BSR type is a first type, a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel;
the generating module is specifically configured to generate a BSR corresponding to the first RLC entity based on a preset BSR format of the second type when the BSR type is the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs.
In some embodiments, the control module is specifically configured to determine whether the MAC entity includes an uplink resource for transmitting a BSR; if the MAC entity comprises uplink resources for sending the BSR, controlling the MAC entity to send the BSR corresponding to the at least one RLC entity by using the uplink resources; if the MAC entity does not contain the uplink resource for sending the BSR, applying for the uplink resource for sending the BSR to the network equipment; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment by utilizing the uplink resources allocated by the network equipment.
In some embodiments, the terminal device further comprises: the communication module is used for sending an uplink scheduling request message to the network equipment; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment; receiving a resource allocation message issued by the network equipment;
And the control module is used for determining uplink resources allocated by the network equipment based on the resource allocation message.
The embodiment of the application also provides another terminal device, as shown in fig. 7, the terminal device includes: a first processor 701 and a first memory 702 configured to store a computer program capable of running on the first processor 701; the first processor 701, when running a computer program in the first memory 702, implements the steps of:
determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
In some embodiments, the first processor 701 when running the computer program in the first memory 702 also implements the following steps: before the MAC entity is controlled to send a Buffer Status Report (BSR) corresponding to at least one RLC entity to network equipment, determining the type of the BSR corresponding to the first RLC entity based on a logical channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity; and generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity.
In some embodiments, the first processor 701, when executing the computer program in the first memory 702, implements the following steps: when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type; and when the target logical channel corresponding to the first RLC entity solely belongs to one logical channel group, determining that the BSR type corresponding to the first RLC entity is the second type.
In some embodiments, the first processor 701, when executing the computer program in the first memory 702, implements the following steps: when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel; when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs.
In some embodiments, the first processor 701 when running the computer program in the first memory 702 also implements the following steps: judging whether the MAC entity contains uplink resources for sending the BSR; if the MAC entity comprises uplink resources for sending the BSR, controlling the MAC entity to send the BSR corresponding to the at least one RLC entity by using the uplink resources; if the MAC entity does not contain the uplink resource for sending the BSR, applying for the uplink resource for sending the BSR to the network equipment; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment by utilizing the uplink resources allocated by the network equipment.
In some embodiments, the first processor 701, when executing the computer program in the first memory 702, implements the following steps: sending an uplink scheduling request message to network equipment; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment; and receiving a resource allocation message issued by the network equipment, and determining uplink resources allocated by the network equipment based on the resource allocation message.
Of course, in practical use, as shown in fig. 7, the various components in the terminal device are coupled together by a first bus system 703. It is appreciated that the first bus system 703 is employed to facilitate connected communications between these components. The first bus system 703 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as a first bus system 703 in fig. 7.
Example IV
The embodiment of the application also provides a network device, as shown in fig. 8, which includes:
a communication module 801, configured to receive a buffer status report BSR sent by a terminal device controlling a medium access control MAC entity; wherein, the BSR is a BSR corresponding to at least one radio link layer control protocol RLC entity for performing packet retransmission;
A second processing module 802, configured to determine, based on the BSR, the at least one RLC entity activated by the terminal device.
In some embodiments, the communication module 801 is further configured to receive a BSR resource request sent by the terminal device if the MAC entity does not include an uplink resource for sending a BSR;
correspondingly, the second processing module 802 is further configured to allocate uplink resources for sending the BSR to the MAC entity in response to the BSR resource request.
The embodiment of the application also provides another network device, as shown in fig. 9, which includes: a second processor 901 and a second memory 902 configured to store a computer program capable of running on the second processor 901; the second processor 901 when running a computer program in the second memory 902 implements the steps of:
receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by a terminal device; wherein, the BSR is a BSR corresponding to at least one radio link layer control protocol RLC entity for performing packet retransmission;
determining the at least one RLC entity activated by the terminal device based on the BSR.
In some embodiments, the second processor 901 when running the computer program in the second memory 902 also implements the following steps: if the MAC entity does not contain the uplink resource for sending the BSR, receiving a BSR resource request sent by the terminal equipment; and responding to the BSR resource request, and distributing uplink resources for sending the BSR to the MAC entity.
Of course, in actual practice, the various components in the network device would be coupled together by a second bus system 903, as shown in FIG. 9. It is appreciated that the second bus system 903 is used to facilitate connected communications between these components. The second bus system 903 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled in fig. 9 as the second bus system 903.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of the above embodiments.
In practical applications, the processor may be at least one of an application specific integrated circuit (ASIC, application Specific Integrated Circuit), a digital signal processing device (DSPD, digital Signal Processing Device), a programmable logic device (PLD, programmable Logic Device), a Field-programmable gate array (Field-Programmable Gate Array, FPGA), a controller, a microcontroller, and a microprocessor. It will be appreciated that the electronics for implementing the above-described processor functions may be other for different devices, and embodiments of the present application are not particularly limited.
The Memory may be a volatile Memory (RAM) such as Random-Access Memory; or a nonvolatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (HDD) or a Solid State Drive (SSD); or a combination of the above types of memories and provide instructions and data to the processor.
It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.
The methods disclosed in the method embodiments provided by the application can be arbitrarily combined under the condition of no conflict to obtain a new method embodiment.
The features disclosed in the several product embodiments provided by the application can be combined arbitrarily under the condition of no conflict to obtain new product embodiments.
The features disclosed in the embodiments of the method or the apparatus provided by the application can be arbitrarily combined without conflict to obtain new embodiments of the method or the apparatus.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An activation method for repeated transmission of data packets is applied to terminal equipment, and the method comprises the following steps:
determining at least one radio link layer control protocol, RLC, entity for performing packet repeat transmissions;
determining a medium access control, MAC, entity to which the at least one RLC entity is connected;
determining a BSR type corresponding to a first RLC entity based on a logical channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity;
wherein, the determining, based on the logical channel corresponding to the first RLC entity, the BSR type corresponding to the first RLC entity includes:
when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type;
when the target logical channel corresponding to the first RLC entity solely belongs to a logical channel group, determining that the BSR type corresponding to the first RLC entity is a second type;
generating a BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity;
wherein the generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity includes:
When the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel;
when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs;
and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to network equipment, so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
2. The method according to claim 1, wherein the controlling the MAC entity to send the buffer status report BSR corresponding to the at least one RLC entity to a network device comprises:
judging whether the MAC entity contains uplink resources for sending the BSR;
if the MAC entity comprises uplink resources for sending the BSR, controlling the MAC entity to send the BSR corresponding to the at least one RLC entity by using the uplink resources;
if the MAC entity does not contain the uplink resource for sending the BSR, applying for the uplink resource for sending the BSR to the network equipment; and controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment by utilizing the uplink resources allocated by the network equipment.
3. The method of claim 2, wherein the applying for sending the uplink resource of the BSR to the network device includes:
sending an uplink scheduling request message to network equipment; the uplink scheduling request message is used for applying for sending uplink resources of the BSR to the network equipment;
and receiving a resource allocation message issued by the network equipment, and determining uplink resources allocated by the network equipment based on the resource allocation message.
4. An activation method for repeated transmission of data packets, applied to network equipment, comprises the following steps:
receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by a terminal device; wherein, the BSR is generated by the terminal equipment based on the BSR type corresponding to the first RLC entity; the BSR type is determined by the terminal equipment based on a logic channel corresponding to the first RLC entity; the first RLC entity is any one of at least one radio link layer control protocol RLC for performing packet repeat transmissions;
determining the at least one RLC entity activated by the terminal device based on the BSR;
wherein, the liquid crystal display device comprises a liquid crystal display device,
the BSR type is determined by the terminal device based on a logical channel corresponding to the first RLC entity, and includes:
When a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type;
when the target logical channel corresponding to the first RLC entity solely belongs to a logical channel group, determining that the BSR type corresponding to the first RLC entity is a second type;
the BSR is generated by the terminal device based on a BSR type corresponding to the first RLC entity, and includes:
when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel;
when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs.
5. The method according to claim 4, wherein the method further comprises:
if the MAC entity does not contain the uplink resource for sending the BSR, receiving a BSR resource request sent by the terminal equipment;
and responding to the BSR resource request, and distributing uplink resources for sending the BSR to the MAC entity.
6. A terminal device, comprising:
a first processing module for determining at least one radio link layer control protocol RLC entity for performing data packet retransmission;
the first processing module is further configured to determine a medium access control MAC entity to which the at least one RLC entity is connected;
the generating module is used for determining the BSR type corresponding to the first RLC entity based on the logic channel corresponding to the first RLC entity; wherein the first RLC entity is any one of the at least one RLC entity; wherein, the determining, based on the logical channel corresponding to the first RLC entity, the BSR type corresponding to the first RLC entity includes: when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type; when the target logical channel corresponding to the first RLC entity solely belongs to a logical channel group, determining that the BSR type corresponding to the first RLC entity is a second type;
the generating module is further configured to generate a BSR corresponding to the first RLC entity based on a BSR type corresponding to the first RLC entity; wherein the generating the BSR corresponding to the first RLC entity based on the BSR type corresponding to the first RLC entity includes: when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel; when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs;
And the control module is used for controlling the MAC entity to send a Buffer Status Report (BSR) corresponding to the at least one RLC entity to the network equipment so that the network equipment determines the at least one RLC entity activated by the terminal equipment based on the received BSR.
7. A network device, comprising:
the communication module is used for receiving a Buffer Status Report (BSR) sent by a Media Access Control (MAC) entity controlled by the terminal equipment; wherein, the BSR is generated by the terminal equipment based on the BSR type corresponding to the first RLC entity; the BSR type is determined by the terminal equipment based on a logic channel corresponding to the first RLC entity; the first RLC entity is any one of at least one radio link layer control protocol RLC for performing packet repeat transmissions; wherein the BSR type is determined by the terminal device based on a logical channel corresponding to the first RLC entity, and includes: when a target logical channel corresponding to the first RLC entity and other logical channels belong to the same logical channel group, determining that the BSR type corresponding to the first RLC entity is a first type; when the target logical channel corresponding to the first RLC entity solely belongs to a logical channel group, determining that the BSR type corresponding to the first RLC entity is a second type; the BSR is generated by the terminal device based on a BSR type corresponding to the first RLC entity, and includes: when the BSR type is a first type, generating a BSR corresponding to the first RLC entity based on a preset first type BSR format; wherein the first type BSR format includes identification information of the target logical channel; when the BSR type is the second type, generating a BSR corresponding to the first RLC entity based on a preset BSR format of the second type; wherein, the second BSR format includes identification information of a logical channel group to which the target logical channel belongs;
A second processing module, configured to determine, based on the BSR, the at least one RLC entity activated by the terminal device.
8. A terminal device, comprising: a first processor and a first memory configured to store a computer program capable of running on the first processor,
wherein the first processor is configured to perform the steps of the method of any of claims 1 to 3 when the computer program is run.
9. A network device, comprising: a second processor and a second memory configured to store a computer program capable of running on the second processor,
wherein the second processor is configured to perform the steps of the method of any of claims 4 to 5 when the computer program is run.
10. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of claims 1 to 5.
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