CN111918329A - Method, device and equipment for processing physical downlink shared channel - Google Patents
Method, device and equipment for processing physical downlink shared channel Download PDFInfo
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- CN111918329A CN111918329A CN201910390859.0A CN201910390859A CN111918329A CN 111918329 A CN111918329 A CN 111918329A CN 201910390859 A CN201910390859 A CN 201910390859A CN 111918329 A CN111918329 A CN 111918329A
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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
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
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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
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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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
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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Abstract
The invention provides a method, a device and equipment for processing a physical downlink shared channel, and relates to the technical field of communication. The method is applied to user equipment and comprises the following steps: and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel. The scheme of the invention solves the problem that the invalid caching of the data carried by the physical downlink shared channel by the UE in the prior art affects the use of the subsequent data.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for processing a physical downlink shared channel.
Background
In the new air interface NR technology, when enhancing a high-reliability low-delay URLLC, a UE may have services for enhancing mobile bandwidths eMBB and URLLC at the same time, and it may occur that a base station schedules a PDSCH1 carrying eMBB data through downlink control information DCI1, and then a URLLC service with a higher delay requirement arrives, and the base station sends DCI2 to schedule another PDSCH2 carrying URLLC data, and since PDSCH1 and PDSCH2 overlap, to ensure the performance of the URLLC service, the UE should at least process a high-priority PDSCH, that is, PDSCH2 carrying URLLC data.
However, for PDSCH with low priority, i.e. PDSCH1 carrying eMBB data, according to the existing mechanism, when decoding PDSCH1 but failing to decode, the UE may store all soft bits of this transmission and buffer them in the HARQ buffer for subsequent retransmission and combination, if the UE does not decode PDSCH1, depending on different UE implementations, the UE may also store the soft bits of this transmission. At this time, if the base station allocates part or all of the resources of the PDSCH1 to other UEs, the target UE may buffer erroneous data, thereby affecting the subsequent retransmission performance.
Disclosure of Invention
The invention aims to provide a method, a device and equipment for processing a physical downlink shared channel, so as to solve the problem that in the prior art, the invalid caching of data carried by the physical downlink shared channel by UE has influence on the use of subsequent data.
In order to achieve the above object, the present invention provides a method for processing a physical downlink shared channel, which is applied to a user equipment, and includes:
and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel.
Optionally, the foregoing the storing of all or part of the data carried by the received physical downlink shared channel includes:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
Optionally, before the foregoing the storage of all or part of the data carried by the received physical downlink shared channel, the method further includes:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
the not storing all or part of the data carried by the received physical downlink shared channel in the cache corresponding to the same data packet includes:
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
Optionally, the not storing all or part of the data carried by the received physical downlink shared channel in the buffer of the corresponding data packet includes:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
Optionally, the received part of data carried by the physical downlink shared channel includes: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
Optionally, after the foregoing storing all or part of the data carried by the received physical downlink shared channel, the method further includes:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
In order to achieve the above object, the present invention provides a method for processing a physical downlink shared channel, which is applied to a network device, and includes:
receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
Optionally, after receiving the non-acknowledgement information, the method further includes:
and retransmitting the data carried by the physical downlink shared channel.
Optionally, before receiving the non-acknowledgement information, the method further includes:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
In order to achieve the above object, the present invention provides a user equipment comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the following steps when executing the program:
and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel.
Optionally, the processor is further configured to:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
Optionally, the processor is further configured to:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
Optionally, the processor is further configured to:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
Optionally, the received part of data carried by the physical downlink shared channel includes: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
Optionally, the transceiver is configured to:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
In order to achieve the above object, the present invention provides a network device comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading a program in the memory;
the transceiver is to: receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
Optionally, the transceiver is further configured to:
and retransmitting the data carried by the physical downlink shared channel.
Optionally, the transceiver is further configured to:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
In order to achieve the above object, the present invention provides a processing apparatus for a physical downlink shared channel, which is applied to a user equipment, and includes:
the processing module is configured to, in the case that decoding of a data packet corresponding to the received data carried by the physical downlink shared channel fails or it is determined that the data packet corresponding to the received data carried by the physical downlink shared channel is not decoded, abandon storage of all or part of the received data carried by the physical downlink shared channel.
In order to achieve the above object, the present invention provides a processing apparatus for a physical downlink shared channel, which is applied to a network device, and includes:
a receiving module, configured to receive non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
In order to achieve the above object, the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the processing method applied to the physical downlink shared channel of the user equipment as above; or, the steps of the processing method applied to the physical downlink shared channel of the network device are implemented.
The technical scheme of the invention at least has the following beneficial effects:
in the method of the embodiment of the invention, the UE abandons the storage of all or part of the received data carried by the PDSCH under the condition that the decoding of the data packet corresponding to the received data carried by the PDSCH fails or the data packet corresponding to the received data carried by the PDSCH is determined not to be decoded, so that the influence of invalid data cache on the use of subsequent data can be effectively avoided.
Drawings
Fig. 1 is a schematic diagram illustrating a processing method of a physical downlink shared channel applied to a user equipment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of scene one;
fig. 3 shows one of the schematic diagrams of PDSCH transmission by the base station in scenario one;
fig. 4 shows a second schematic diagram of PDSCH transmission by the base station in scenario one;
FIG. 5 is a diagram illustrating a downlink out-of-order scheduling scenario;
FIG. 6 is a schematic diagram of scene two;
fig. 7 shows one of the diagrams of PDSCH transmission by the base station in scenario two;
fig. 8 shows a second schematic diagram of PDSCH transmission by the base station in scenario two;
fig. 9 is a schematic diagram illustrating a processing method of a physical downlink shared channel applied to a network device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a method for processing a physical downlink shared channel according to an embodiment of the present invention is applied to a user equipment, and includes:
In this embodiment, the UE may determine whether to decode a data packet corresponding to data carried by the received PDSCH. The decision by the UE to determine whether to decode may be static, semi-static, or dynamic. According to the step 101, the UE may give up storing all or part of the received data carried by the PDSCH when it fails to decode the data packet corresponding to the received data carried by the PDSCH or when it is determined that the data packet corresponding to the received data carried by the PDSCH is not decoded, so that the influence of invalid data buffer on the use of subsequent data can be effectively avoided.
It should be appreciated that, since the data carried by the PDSCH may be newly transmitted data, i.e., data transmitted for the first time; or may be retransmitted data, i.e. data not transmitted for the first time. Optionally, the foregoing the storing of all or part of the data carried by the received physical downlink shared channel includes:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
In combination with the above, since the data carried by the PDSCH may be newly transmitted data or retransmitted data, before the foregoing abandoning the storage of all or part of the data carried by the received physical downlink shared channel, the method further includes:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
the not storing all or part of the data carried by the received physical downlink shared channel in the cache corresponding to the same data packet includes:
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
In this way, for newly transmitted data carried by the current PDSCH, all or part of the data may not be directly stored in the buffer corresponding to the data packet, and at this time, the buffer corresponding to the PDSCH carrying service is still empty. And for the retransmission data carried by the current PDSCH, the merged data is not stored in the cache of the corresponding data packet, and the cache of the data packet corresponding to the PDSCH carrying service at this time comprises the data stored before the retransmission.
In addition, it should be understood that, when the UE receives the data carried by the PDSCH but does not determine whether to decode the data, on the one hand, all or part of the data carried by the PDSCH to be discarded may be directly stored in the buffer of the corresponding data packet, or after being merged with the data of the corresponding data packet in the buffer, the merged data is stored in the buffer of the data packet; on the other hand, there may not be any buffering (i.e. not stored in the buffer for the corresponding packet, or not stored in the buffer for the packet after merging with the data of the corresponding packet in the buffer). Therefore, in this embodiment, optionally, the not storing all or part of the data carried by the received physical downlink shared channel in the buffer of the corresponding data packet includes:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
Thus, before determining whether to decode, all or part of the stored data carried by the PDSCH to be discarded is deleted in the buffer of the data packet; and directly discarding all or part of the data which is not stored and is carried by the PDSCH to be abandoned, and not updating the existing buffer of the data packet.
In addition, optionally, in this embodiment, the received part of the data carried by the physical downlink shared channel includes: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
Here, X may be agreed or network side notified. For the appointed or notified X, the value taking strategy of the X can be limited besides the X is limited to be a fixed value, so that the resource utilization efficiency is improved. For example, in the scenario of PDSCH1 and PDSCH2 that are overlapped in time, for data carried by PDSCH1, the X value is determined by the position of symbol a corresponding to the starting symbol of PDSCH2 in PDSCH1, and thus, the UE may give up data carried in PDSCH1 from the beginning of symbol a to the end of the physical downlink shared channel.
In addition, to ensure subsequent use of data, in this embodiment, after foregoing abandoning storage of all or part of the data carried by the received physical downlink shared channel, the method further includes:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
Thus, the network device can know that the data transmitted this time has been completely or partially abandoned by receiving the non-acknowledgement information NACK, and the network device can schedule retransmission for the data carried by the PDSCH. Preferably, when the retransmission parameter is set, the previous PDSCH transmission may be considered to be absent, e.g., if the last transmission is a new transmission and the RV is set to 0, then the redundancy version RV is set at the time of retransmission, and may still be set to RV0, instead of setting other RVs to transmit check bits.
As can be seen from the above, when it is determined that decoding of a packet corresponding to received data carried by a PDSCH fails or decoding of a packet corresponding to the received data carried by the PDSCH is not determined, the UE may discard storing all or part of the received data carried by the PDSCH. Therefore, a network device such as a base station may not transmit the PDSCH at all or may stop transmission of the PDSCH from any symbol for a behavior that a UE gives up storage of all data carried by the received PDSCH; for the action that the UE gives up storing the partial data carried by the received PDSCH, the base station at least needs to send PDSCH from the first symbol to the X-1 th symbol of the PDSCH. Therefore, the base station can allocate the residual time-frequency resources to other needed transmission services, and the resource utilization rate of the system is optimized.
The application of the method of the embodiment of the present invention is described below with reference to specific scenarios:
scenario one, the UE receives the first downlink control information DCI1 to schedule PDSCH1, and then receives DCI2 to schedule PDSCH2, and PDSCH1 and PDSCH2 overlap in time. PDSCH1 and PDSCH2 may or may not overlap in frequency, and PDSCH1 and PDSCH2 are not overlapped in frequency, as shown in fig. 2. At this time, the UE can determine the relative priorities of PDSCH1 and PDSCH2 according to the indication of the base station. The indication may be an explicit indication or an implicit indication. For example, a preset field in DCI explicitly indicates the traffic priority. The service priority is implicitly indicated by the preset DCI format, the CORESET/search space where the PDCCH bearing the DCI is located, the radio network temporary identifier RNTI of the scrambled DCI, the corresponding relation between the time sequence relation and the service priority.
Here, it is assumed that the traffic priority of PDSCH2 is higher than the traffic priority of PDSCH 1. To ensure higher priority traffic processing, the UE preferentially processes and decodes the PDSCH2, and feeds back acknowledgement information ACK or NACK to the base station according to the decoding result. If the UE determines to decode the data packet corresponding to the data carried by the PDSCH1, the PDSCH1 feeds back an ACK to the base station after the decoding is successful; after the decoding fails, the storage of all or part of the data carried by the PDSCH1 is abandoned, and a NACK is fed back to the base station. And if the UE determines not to decode the data packet corresponding to the data carried by the PDSCH1, the UE abandons the storage of all or part of the data carried by the PDSCH1 and feeds back NACK to the base station.
If the base station receives ACK feedback for PDSCH1, i.e., the UE decoded PDSCH1 and decoded correctly, the data packet carried by PDSCH1 is transmitted successfully, and the base station no longer needs to perform subsequent scheduled retransmissions on the data packet carried by PDSCH 1. On the contrary, if the base station receives NACK feedback for PDSCH1, it may be that the UE side decoded PDSCH1 but failed to decode, or it may be that the UE side did not decode PDSCH1, but in any case, the UE side did not buffer corresponding data, and the base station may schedule retransmission for the data packet carried by PDSCH 1.
The base station transmits PDSCH1 according to the scheduling information indicated by DCI1, and specifically, transmits PDSCH1 according to the agreed UE behavior. If the agreed UE behavior is to abandon the storage of all data of PDSCH1, at this time, the base station may not transmit PDSCH1 at all or stop the transmission of PDSCH1 from any symbol of PDSCH1, as shown in fig. 3, stop the transmission of PDSCH1 from the beginning symbol of PDSCH 2; alternatively, as shown in fig. 4, the transmission of PDSCH1 may be stopped after DCI2 ends N symbols of symbols. If the agreed UE behavior is to simply give up storing partial data of PDSCH1, e.g., the UE only gives up data from the beginning of the xth symbol of PDSCH1, the base station needs to transmit PDSCH1 from the beginning of PDSCH1 to the beginning of the xth symbol.
Of course, the above procedure is also applicable to the scenario of downlink out-of-order scheduling but PDSCH does not overlap in time, i.e. PDSCH2 scheduled by DCI2 later in time starts before PDSCH1 scheduled by DCI1 earlier in time ends, as shown in fig. 6. The UE and the base station may receive and transmit using the same mechanism.
Scenario two, when the UE receives the DCI1 to activate SPS (Semi-Persistent scheduling) configuration 1, and then receives the DCI2 to activate SPS configuration 2, the PDSCH of the SPS1 partially overlaps with the PDSCH of the SPS2 in the time domain, as shown in fig. 5. When the PDSCH of SPS1 overlaps in the time domain with the PDSCH of SPS2, the UE determines relative priority according to the indication of the base station. The indication may be an explicit indication or an implicit indication. For example, a preset field in DCI based on activated SPS configuration explicitly indicates a service priority; and implicitly indicating the service priority by the PDCCH bearing the DCI or the activated sequence through the corresponding relation between the PDCCH bearing the DCI or the activated sequence and the service priority. Or semi-statically indicated by the network side through higher layer signaling.
Here, it is assumed that the traffic priority of the PDSCH of SPS2 is higher than the traffic priority of the PDSCH of SPS 1. To ensure higher priority traffic processing, the UE preferentially processes and decodes the PDSCH of the SPS2, and feeds back acknowledgement information ACK or NACK to the base station according to the decoding result. If the UE determines to decode the data packet corresponding to the data carried by the PDSCH of SPS1, the PDSCH of SPS1 feeds back ACK to the base station after successful decoding; after the decoding fails, the storage of all or part of the data carried by the PDSCH of the SPS1 is abandoned and a NACK is fed back to the base station. And if the UE determines not to decode the data packet corresponding to the data carried by the PDSCH of the SPS1, the UE abandons the storage of all or part of the data carried by the PDSCH of the SPS1 and feeds back NACK to the base station.
The base station receives the ACK feedback for the PDSCH with the priority, that is, the UE decodes the PDSCH with the priority and decodes the PDSCH correctly, so that the data packet carried by the PDSCH with the priority is transmitted successfully, and the base station does not need to perform subsequent scheduling retransmission on the data packet carried by the PDSCH with the priority. On the contrary, if the base station receives NACK feedback for the PDSCH with priority, it may be that the UE decodes the PDSCH with priority but fails to decode, or it may be that the UE does not decode the PDSCH with priority, but in any case, the UE side does not buffer corresponding data, and the base station may schedule retransmission for the data packet carried by the PDSCH with priority.
The base station transmits the PDSCH of SPS1 according to the scheduling information indicated by DCI1, and specifically, transmits the PDSCH of SPS1 according to the agreed UE behavior. If the agreed UE behavior is to forgo storage of all data for PDSCH of SPS1, then the base station may stop transmission of PDSCH1 starting from the symbol where the high priority PDSCH started, as shown in fig. 7; alternatively, the low priority PDSCH is not transmitted at all, as shown in fig. 8. If the agreed UE behavior is to simply forgo storing partial data for the PDSCH of SPS1, the base station needs to transmit the PDSCH from the PDSCH starting symbol of SPS1 to the PDSCH before the beginning of the xth symbol.
To sum up, in the method of the embodiment of the present invention, the UE may give up storing all or part of the received data carried by the PDSCH when it fails to decode the data packet corresponding to the received data carried by the PDSCH or when it is determined that the data packet corresponding to the received data carried by the PDSCH is not decoded, so that data of other UEs is not buffered erroneously, and subsequent retransmission and combining are not affected. In addition, the base station can flexibly determine whether to stop sending the PDSCH according to scheduling requirements based on UE behaviors, and the resource utilization efficiency is improved.
As shown in fig. 9, a method for processing a physical downlink shared channel according to an embodiment of the present invention is applied to a network device, and includes:
step 901, receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when it is determined that decoding of data carried by the received physical downlink shared channel fails or it is determined that the data carried by the received physical downlink shared channel is not decoded.
Here, the network device, such as the base station, receives non-acknowledgement information sent after the UE determines to decode the received data carried by the physical downlink shared channel but fails to decode the data, or determines not to decode the received data carried by the physical downlink shared channel, so as to discard all or part of the received data carried by the physical downlink shared channel, and thus, the network device may schedule retransmission for the data carried by the PDSCH after knowing that the data transmitted this time has been discarded in whole or in part.
Optionally, after receiving the non-acknowledgement information, the method further includes:
and retransmitting the data carried by the physical downlink shared channel.
Prior to retransmission, the previous PDSCH transmission may be considered to be absent, preferably when the retransmission parameters are set, e.g., redundancy version RV is set at retransmission, and may still be set to RV0 instead of setting other RV test transmission check bits.
Optionally, before receiving the non-acknowledgement information, the method further includes:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
The base station can flexibly determine whether to stop the transmission of the PDSCH based on the behavior pre-agreed by the UE. For example, for the behavior that the UE gives up storage of all data carried by the received PDSCH, the PDSCH may not be transmitted at all or may be stopped from being transmitted from any symbol; for the action that the UE gives up storing the partial data carried by the received PDSCH, the base station at least needs to send PDSCH from the first symbol to the X-1 th symbol of the PDSCH.
As such, for a PDSCH transmitted by the base station, the UE may or may not decode the PDSCH according to the pre-agreed behavior. If the base station stops the transmission of the PDSCH and may further transmit signals of other UEs on the resources originally scheduled for the PDSCH, the UE may hardly be able to correctly decode the PDSCH from the perspective of the UE. Therefore, the base station receives NACK regardless of whether the UE decoded the PDSCH. The UE gives up storing all or part of data carried by the PDSCH, so that signals of other UEs cannot be buffered mistakenly, and subsequent retransmission and combination cannot be influenced. Subsequently, the base station may schedule the retransmission and assume that this previous PDSCH1 transmission was not present when the parameters for the retransmission were set.
It should be noted that, the method is matched with the processing method applied to the physical downlink shared channel of the user equipment to implement the transceiving processing of the physical downlink shared channel, and the implementation manner of the embodiment of the processing method applied to the physical downlink shared channel of the user equipment is suitable for the method and can achieve the same technical effect.
As shown in fig. 10, a user equipment according to an embodiment of the present invention includes: a transceiver 1010, a memory 1020, a processor 1000, and a computer program stored on the memory 1020 and executable on the processor 1000; the processor 1000 implements the following steps when executing the program:
and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel.
In the user equipment of this embodiment, when it is failed to decode the data packet corresponding to the received PDSCH-carried data or it is determined that the data packet corresponding to the received PDSCH-carried data is not decoded, the storage of all or part of the received PDSCH-carried data is abandoned, so that the influence of invalid data buffer on the use of subsequent data can be effectively avoided.
Optionally, the processor 1000 is further configured to:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
Optionally, the processor 1000 is further configured to:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
Optionally, the processor 1000 is further configured to:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
Optionally, the received part of data carried by the physical downlink shared channel includes: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
Optionally, the transceiver 1000 is configured to:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
Where in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 1000 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1030 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.
As shown in fig. 11, the network device according to the embodiment of the present invention includes: a transceiver 1110, a memory 1120, a processor 1100, and a computer program stored on the memory 1120 and executable on the processor 1100; the processor 1100 is used to read programs in the memory;
the transceiver 1110 is configured to: receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
In the network device of this embodiment, when it is determined that decoding of the received data carried by the physical downlink shared channel is failed or it is determined that the received data carried by the physical downlink shared channel is not decoded, the UE may give up non-acknowledgement information sent after storing all or part of the received data carried by the physical downlink shared channel, so as to know that the data transmitted this time has been given up in whole or in part, and the network device may schedule retransmission for the data carried by the PDSCH.
Optionally, the transceiver 1110 is further configured to:
and retransmitting the data carried by the physical downlink shared channel.
Optionally, the transceiver 1110 is further configured to:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.
The embodiment of the present invention further provides a processing apparatus for a physical downlink shared channel, which is applied to a user equipment, and includes:
the processing module is configured to, in the case that decoding of a data packet corresponding to the received data carried by the physical downlink shared channel fails or it is determined that the data packet corresponding to the received data carried by the physical downlink shared channel is not decoded, abandon storage of all or part of the received data carried by the physical downlink shared channel.
Optionally, the processing module is further configured to:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
Optionally, the apparatus further comprises:
a determining module, configured to determine that the received data carried by the physical downlink shared channel is a new transmission or a retransmission;
the processing module is further configured to:
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
Optionally, the processing module is further configured to:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
Optionally, the received part of data carried by the physical downlink shared channel includes: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
Optionally, the apparatus further comprises:
and the sending module is used for sending the non-confirmation information of the physical downlink shared channel to the network equipment.
The apparatus is an apparatus to which the above processing method applied to the physical downlink shared channel of the user equipment is applied, and the implementation of the embodiment of the processing method applied to the physical downlink shared channel of the user equipment is applied to the apparatus, and the same technical effect can be achieved.
The embodiment of the present invention further provides a processing apparatus for a physical downlink shared channel, which is applied to a network device, and includes:
a receiving module, configured to receive non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
Optionally, the apparatus further comprises:
and the retransmission module is used for retransmitting the data carried by the physical downlink shared channel.
Optionally, the apparatus further comprises:
and the transmission module is used for stopping transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
The apparatus is an apparatus to which the above processing method applied to the physical downlink shared channel of the network device is applied, and the implementation of the embodiment of the processing method applied to the physical downlink shared channel of the network device is applied to the apparatus, and the same technical effect can be achieved.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the above embodiment of the processing method applied to the physical downlink shared channel of the user equipment; or, the above-mentioned processes of the embodiment of the processing method applied to the physical downlink shared channel of the network device are implemented, and the same technical effect can be achieved, and for avoiding repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (21)
1. A processing method of a physical downlink shared channel is applied to user equipment, and is characterized by comprising the following steps:
and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel.
2. The method of claim 1, wherein the foregoing the discarding of the storage of all or part of the data carried by the received physical downlink shared channel comprises:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
3. The method of claim 2, further comprising, before the foregoing the abandoning the storage of all or part of the data carried by the received physical downlink shared channel:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
the not storing all or part of the data carried by the received physical downlink shared channel in the cache corresponding to the same data packet includes:
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
4. The method according to claim 2, wherein said not storing all or part of the data carried by the received physical downlink shared channel in the buffer of the corresponding data packet comprises:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
5. The method according to any of claims 1-4, wherein the received partial data carried by the physical downlink shared channel comprises: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
6. The method of claim 1, further comprising, after the foregoing the abandoning the storage of all or part of the data carried by the received physical downlink shared channel:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
7. A processing method of a physical downlink shared channel is applied to network equipment, and is characterized by comprising the following steps:
receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
8. The method of claim 7, further comprising, after receiving the non-acknowledgement information:
and retransmitting the data carried by the physical downlink shared channel.
9. The method of claim 7, wherein prior to receiving the non-acknowledgement information, further comprising:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
10. A user equipment, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:
and under the condition that the decoding of the data packet corresponding to the data carried by the received physical downlink shared channel fails or the data packet corresponding to the data carried by the received physical downlink shared channel is determined not to be decoded, abandoning the storage of all or part of the data carried by the received physical downlink shared channel.
11. The device of claim 10, wherein the processor is further configured to:
and not storing all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet.
12. The device of claim 11, wherein the processor is further configured to:
determining whether the received data carried by the physical downlink shared channel is newly transmitted or retransmitted;
if the received data carried by the physical downlink shared channel is newly transmitted, not storing all or part of the data carried by the physical downlink shared channel in a cache of a corresponding data packet;
if the received data carried by the physical downlink shared channel is retransmission, merged data is not stored in a cache of a corresponding data packet, and the merged data is data obtained by merging all or part of the data carried by the physical downlink shared channel with the data of the data packet in the cache.
13. The device of claim 11, wherein the processor is further configured to:
if the UE stores all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, or stores all or part of the received data carried by the physical downlink shared channel and the data of the corresponding data packet in the cache of the data packet after merging the data and the data of the corresponding data packet in the cache, deleting all or part of the received data carried by the physical downlink shared channel in the cache of the data packet;
if the UE does not store all or part of the received data carried by the physical downlink shared channel in a cache of a corresponding data packet before determining to decode or determining not to decode the data packet corresponding to the received data carried by the physical downlink shared channel, and does not store all or part of the received data carried by the physical downlink shared channel in the cache of the data packet after merging the data carried by the physical downlink shared channel with the data of the corresponding data packet in the cache, discarding all or part of the received data carried by the physical downlink shared channel, and not updating the cache of the data packet.
14. The apparatus according to any of claims 10-13, wherein the received part of data carried by the physical downlink shared channel comprises: and carrying data from the Xth symbol of the physical downlink shared channel to the end of the physical downlink shared channel, wherein X is an integer greater than 1.
15. The device of claim 10, wherein the transceiver is configured to:
and sending the non-confirmation information of the physical downlink shared channel to network equipment.
16. A network device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory;
the transceiver is to: receiving non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
17. The device of claim 16, wherein the transceiver is further configured to:
and retransmitting the data carried by the physical downlink shared channel.
18. The device of claim 16, wherein the transceiver is further configured to:
and starting to stop transmitting at the Y-th symbol of the physical downlink shared channel, wherein Y is an integer greater than or equal to 1.
19. A processing device of a physical downlink shared channel is applied to user equipment, and is characterized by comprising:
the processing module is configured to, in the case that decoding of a data packet corresponding to the received data carried by the physical downlink shared channel fails or it is determined that the data packet corresponding to the received data carried by the physical downlink shared channel is not decoded, abandon storage of all or part of the received data carried by the physical downlink shared channel.
20. A processing device of a physical downlink shared channel is applied to a network device, and is characterized by comprising:
a receiving module, configured to receive non-acknowledgement information, where the non-acknowledgement information is sent after a user equipment abandons storage of all or part of data carried by a received physical downlink shared channel when determining that decoding of data carried by the received physical downlink shared channel fails or when determining that the data carried by the received physical downlink shared channel is not decoded.
21. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for processing a physical downlink shared channel according to any one of claims 1 to 6; or, implementing the steps of the processing method of the physical downlink shared channel according to any one of claims 7 to 9.
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