CN110769509B - Method and device for sending and indicating feedback information, network side equipment and terminal equipment - Google Patents
Method and device for sending and indicating feedback information, network side equipment and terminal equipment Download PDFInfo
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- CN110769509B CN110769509B CN201810845414.2A CN201810845414A CN110769509B CN 110769509 B CN110769509 B CN 110769509B CN 201810845414 A CN201810845414 A CN 201810845414A CN 110769509 B CN110769509 B CN 110769509B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Abstract
The invention provides a method and a device for sending and indicating feedback information, network side equipment and terminal equipment, wherein the method suitable for the network side equipment comprises the following steps: dividing a feedback interval indication domain into a first bit domain and a second bit domain, and configuring a time slot position of the first bit domain indicating that terminal equipment sends feedback information to network side equipment; combining the information of the second bit field and the start symbol indication field to indicate the target position of the start symbol of the feedback information sent by the terminal equipment in the target time slot corresponding to the time slot position; and sending the feedback interval indication domain and the starting symbol indication domain to the terminal equipment, so that the terminal equipment sends the feedback information according to the time slot position and the target position. The scheme can solve the problem that the feedback information can not be rapidly sent in certain scenes in the existing scheme, effectively reduces the time delay of high-reliability low-time-delay data feedback, and improves the reliability of data receiving.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating transmission of feedback information, a network side device, and a terminal device.
Background
Currently, development work of a 5 th generation mobile communication system (5G) is actively underway. According to the future application requirements, the 5G system needs to support various service scenarios, wherein the communication scenarios with Low time delay and high reliability (URLLC), such as unmanned driving, industrial automation, etc., are receiving wide attention. The proposal of the puncturing transmission scheme meets the requirement of the URLLC data on the transmission delay, but the transmission reliability of the URLLC data cannot be ensured. Therefore, how to ensure that URLLC data can be correctly received by a terminal is a problem that needs to be solved currently. One possible solution is to use a Hybrid Automatic Repeat Request (HARQ) mechanism, that is, if the terminal fails to correctly receive or demodulate the URLLC data sent by the base station, a Negative-acknowledgement (NACK) is sent in a Physical Uplink Control Channel (PUCCH) to the base station, and the base station performs data retransmission after receiving the NACK message, so that the terminal can receive the data again.
However, in the current PUCCH design for feedback information transmission, the URLLC traffic characteristics are not fully considered, for example, a Starting Symbol of the PUCCH is defined by two parameters, i.e., K1 (feedback interval indication field) and Starting Symbol Index (Starting Symbol indication), where K1 represents the number of slots from the terminal receiving a Physical Downlink Shared Channel (PDSCH) to the PUCCH used for uplink feedback of the PDSCH, and as shown in fig. 1, the value of K1 is carried by a Physical Downlink Control Channel (PDCCH). The Starting Symbol Index indicates a Starting Symbol position in a slot where the PUCCH is located, and as shown in fig. 1, a value of the Starting Symbol Index is configured to an optional set by RRC (Radio Resource Control), and then a certain value is indicated by 3 bits in the PDCCH. For the transmission of URLLC data, the scheduling method is based on Mini-Slot (a number of symbols), and at this time, the transmission of PUCCH may use any symbol as a starting symbol, and this current method of indicating by 3 bits in RRC and PDCCH may not be sufficient, because it is generally understood that 3 bits can only indicate 8 starting positions, and one Slot contains 14 symbols, which exceeds the range that 3 bits can indicate (or there are M starting positions in the time domain, but there are N frequency point positions in the frequency domain, and the total number of transmission positions is M × N, which is usually greater than 8). If URLLC data is transmitted to the terminal at the 8 th Symbol of a timeslot, in order to reduce the delay, the base station expects the terminal to feed back at the 10 th Symbol of the same timeslot, according to the existing indication manner, K1=0, starting Symbol index =10 (i.e. at the 10 th Symbol of the current timeslot) should be set, however, 3 bits can only represent 8 at maximum, so in this case, the terminal can only wait to send feedback information to the start position of the next timeslot, i.e. it is assumed that K1=1, starting Symbol index =0, and then there is a delay of 5 Symbol durations, as shown in fig. 2.
Through the above analysis, in order to better adapt to the URLLC data service, the transmission indication mode of the PUCCH resource for feedback information transmission needs to be designed and optimized, so that the terminal can more flexibly and quickly feed back information about whether data reception is successful to the base station, thereby improving the reliability of data reception.
Disclosure of Invention
The invention is based on the above problems, and provides a transmission indication scheme related to feedback information, which divides a feedback interval indication field into two bit fields, and combines one bit field with a start symbol indication field to increase the bit number for feeding back the start symbol position indication, so as to indicate more feedback information transmission positions, solve the problem that the existing scheme cannot quickly transmit feedback information in some scenes, and meet the requirement of quickly transmitting feedback information of URLLC data, thereby effectively reducing the time delay of URLLC data feedback and improving the reliability of data reception.
In view of this, according to a first aspect of the present invention, a method for indicating transmission related to feedback information is provided, which is applied to a network side device, and the method for indicating transmission includes: dividing a feedback interval indication domain into a first bit domain and a second bit domain, and configuring a time slot position of the first bit domain indicating that terminal equipment sends feedback information to network side equipment; combining the information of the second bit field and the start symbol indicating field to indicate the target position of the start symbol of the feedback information sent by the terminal equipment in the target time slot corresponding to the time slot position; and sending the feedback interval indication domain and the starting symbol indication domain to the terminal equipment, so that the terminal equipment sends the feedback information according to the time slot position and the target position.
In the technical scheme, in the design of a PUCCH for transmitting feedback information, the characteristics of URLLC service are fully considered, a feedback interval indication field (namely K1) which is one parameter for indicating the transmission position of the PUCCH for carrying the feedback information is divided into two bit fields, wherein one bit field (namely a first bit field) is used for indicating the slot position of the terminal equipment for transmitting the feedback information to the network side equipment, and the other bit field (namely a second bit field) is subjected to information combination with a starting symbol indication field which is two parameters for indicating the transmission position of the PUCCH for carrying the feedback information, so as to indicate the starting symbol position of the terminal equipment for transmitting the feedback information, namely which symbol in a target slot indicated by the first bit field starts to transmit the feedback information, and further transmit the feedback interval indication field and the starting symbol indication field to the terminal equipment, so that the starting symbol position for transmitting the feedback information is determined by the starting symbol indication field, the bit number for indicating the feedback starting symbol position is increased by the way of information combination between the second bit field and the starting symbol indication field in the feedback interval indication field, so that the feedback information is more feedback information is indicated for the terminal equipment, the problem of the quick feedback of the feedback information transmission can be solved, and the reliability of the existing LLC data transmission can not be effectively improved, thereby, and the reliability of the URLLC data can be effectively satisfied, and the problem of the transmission of the data can be effectively satisfied.
In the foregoing technical solution, preferably, the information combining the second bit field and the start symbol indication field to indicate a target position of a start symbol of the terminal device for sending the feedback information in a target time slot corresponding to the time slot position includes: accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indicating field to obtain a numerical value corresponding to the target position; or combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field.
In this technical solution, information combination between the second bit field and the start symbol indication field may be implemented in at least two ways, so as to accurately indicate a position of a start symbol of feedback information sent by a terminal device in a target timeslot indicated by the first bit field, specifically: firstly, respectively calculating numerical values corresponding to a second bit field and a starting symbol indicating field, and then adding the numerical values to obtain a numerical value indicating a starting symbol position for sending feedback information in a target time slot; and the other information merging mode is that firstly, bit positions corresponding to the second bit field and the starting symbol bit field are merged to obtain a new bit position with an increased number of bits, and then the starting symbol position for sending the feedback information in the target time slot is determined according to a value corresponding to the new bit position.
In any of the foregoing technical solutions, preferably, the configuring the first bit field to indicate a time slot position where the terminal device sends the feedback information to the network side device includes: defaulting the number of bits occupied by the first bit field to 1; or configuring and bearing the bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
In the technical scheme, a first bit field is generally defaulted to adopt 1 bit to indicate the time slot position of the terminal equipment for sending the feedback information so as to reduce the influence on the existing standard; or the bit number information occupied by the first bit field can be configured and carried by the high-level signaling or the downlink control information, so that the real-time dynamic adjustment of the bit number occupied by the first bit field can be realized, and the terminal equipment can be informed in time.
According to a second aspect of the present invention, a device for indicating transmission of feedback information is provided, which is applied to a network side device, and includes: the configuration module is used for dividing the feedback interval indication domain into a first bit domain and a second bit domain, and configuring the time slot position of the first bit domain indicating the terminal equipment to send feedback information to the network side equipment; a processing module, configured to perform information merging on the second bit field and the start symbol indication field to indicate a target position of a start symbol of the feedback information sent by the terminal device in a target time slot corresponding to the time slot position; and the sending module is used for sending the feedback interval indication domain and the starting symbol indication domain to the terminal equipment, so that the terminal equipment sends the feedback information according to the time slot position and the target position.
In the technical scheme, in the design of a PUCCH for transmitting feedback information, the characteristics of URLLC service are fully considered, a feedback interval indication field (namely K1) which is one parameter for indicating the transmission position of the PUCCH for bearing the feedback information is divided into two bit fields, wherein one bit field (namely a first bit field) is used for indicating the time slot position of the terminal equipment for transmitting the feedback information to network side equipment, and the other bit field (namely a second bit field) is combined with two start symbol indication fields of the parameter for indicating the transmission position of the PUCCH for bearing the feedback information, so as to indicate the start symbol position of the terminal equipment for transmitting the feedback information, namely which symbol in a target time slot indicated by the first bit field starts to transmit the feedback information, and further the feedback interval indication field and the start symbol indication field are transmitted to the terminal equipment, so that the start symbol position for transmitting the feedback information is determined by the start symbol position, therefore, the bit number for indicating the feedback start symbol position is increased by combining the second bit field with the start symbol indication field, so as to indicate more feedback information transmission positions, the problem that the URLLC transmission position of the feedback information in some conventional PUCCH transmission schemes can not be effectively solved, and the reliability of the URLLC data transmission can be effectively reduced, thereby effectively prolonging the reliability of the rapid data transmission.
In the foregoing technical solution, preferably, the processing module is specifically configured to: accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indicating field to obtain a numerical value corresponding to the target position; or combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field.
In this technical solution, information combination of the second bit field and the start symbol indication field can be implemented in at least two ways, so as to accurately indicate a position of a start symbol of the terminal device sending the feedback information in a target timeslot indicated by the first bit field, specifically: firstly, respectively calculating numerical values corresponding to a second bit field and a starting symbol indicating field, and then adding the numerical values to obtain a numerical value indicating a starting symbol position for sending feedback information in a target time slot; the other information merging mode is that firstly, the bit corresponding to the second bit field and the start symbol bit field is merged to obtain a new bit with an increased number of bits, and then the start symbol position for sending the feedback information in the target time slot is determined according to the value corresponding to the new bit.
In any of the above technical solutions, preferably, the configuration module is further configured to: defaulting the number of bits occupied by the first bit field to 1; or configuring and carrying bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
In the technical scheme, a first bit field is usually defaulted to adopt 1 bit to indicate the time slot position of the terminal equipment for sending the feedback information so as to reduce the influence on the existing standard; or the information of the number of bits occupied by the first bit field can be configured and carried by the high-level signaling or the downlink control information, so that the real-time dynamic adjustment of the number of bits occupied by the first bit field can be realized and the terminal equipment can be informed in time.
According to a third aspect of the present invention, a network side device is provided, including: as mentioned in any of the above technical solutions of the second aspect, the network side device has all the beneficial effects of the apparatus for indicating sending of feedback information mentioned in any of the above technical solutions, and details are not repeated here.
According to a fourth aspect of the present invention, a method for indicating transmission of feedback information is provided, which is applied to a terminal device, and the method for indicating transmission includes: receiving a feedback interval indication field and a starting symbol indication field sent by a network side device, wherein the feedback interval indication field comprises a first bit field and a second bit field, and the second bit field and the starting symbol indication field are subjected to information combination; analyzing the first bit field to determine a time slot position for sending feedback information to the network side equipment; analyzing the second bit field and the start symbol indication field to determine a target position of a start symbol for sending the feedback information in a target time slot corresponding to the time slot position; and starting to send the feedback information on the starting symbol corresponding to the target position in the target time slot.
In the technical scheme, when a PUCCH (physical uplink control channel) for transmitting feedback information is designed based on a network side device, the characteristics of URLLC (universal resource level control) service are fully considered, a feedback interval indication field (namely K1) which is one parameter for indicating the transmission position of the PUCCH for carrying the feedback information is divided into two bit fields, one bit field is combined with a start symbol indication field which is two parameters for indicating the transmission position of the PUCCH for carrying the feedback information, so as to indicate the start symbol position for transmitting the feedback information, when the feedback interval indication field and the start symbol indication field are received, the first bit field in the feedback interval indication field is firstly demodulated and read to determine the slot position for transmitting the feedback information, and then the second bit field and the start symbol indication field are demodulated and read to determine the start symbol position for transmitting the feedback information, namely which symbol in a target slot indicated by the first bit field starts to transmit the feedback information, so that the bit number for feeding back the start symbol position indication is added based on the combination of the second bit field in the feedback interval indication field and the start symbol indication field, more feedback information is indicated by a terminal device, the problem of the URLLC (radio link control) in certain scenarios under the existing feedback information transmission scheme is solved, and the feedback information transmission reliability of the URLLC (radio link control) can be effectively reduced, and the feedback data can be effectively delayed.
According to a fifth aspect of the present invention, a terminal device is provided, comprising: the transceiver receives a feedback interval indication field and a start symbol indication field sent by a network side device, wherein the feedback interval indication field comprises a first bit field and a second bit field, and the second bit field and the start symbol indication field are subjected to information combination; a processor and a memory, the processor being configured to implement the following when executing a computer program stored in the memory: analyzing the first bit field to determine a time slot position for sending feedback information to the network side equipment; analyzing the second bit field and the starting symbol indication field to determine a target position of a starting symbol for sending the feedback information in a target time slot corresponding to the time slot position; and the transceiver is further configured to: and starting to send the feedback information on the starting symbol corresponding to the target position in the target time slot.
In the technical scheme, when a PUCCH (physical uplink control channel) for transmitting feedback information is designed based on a network side device, the characteristics of URLLC (universal resource level control) service are fully considered, a feedback interval indication field (namely K1) which is one parameter for indicating the transmission position of the PUCCH for carrying the feedback information is divided into two bit fields, one bit field is combined with a start symbol indication field which is two parameters for indicating the transmission position of the PUCCH for carrying the feedback information, so as to indicate the start symbol position for transmitting the feedback information, when the feedback interval indication field and the start symbol indication field are received, the first bit field in the feedback interval indication field is firstly demodulated and read to determine the slot position for transmitting the feedback information, and then the second bit field and the start symbol indication field are demodulated and read to determine the start symbol position for transmitting the feedback information, namely which symbol in a target slot indicated by the first bit field starts to transmit the feedback information, so that the bit number for feeding back the start symbol position indication is added based on the combination of the second bit field in the feedback interval indication field and the start symbol indication field, more feedback information is indicated by a terminal device, the problem of the URLLC (radio link control) in certain scenarios under the existing feedback information transmission scheme is solved, and the feedback information transmission reliability of the URLLC (radio link control) can be effectively reduced, and the feedback data can be effectively delayed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a diagram illustrating a starting Symbol position in a slot where a PUCCH is located is represented by a starting Symbol Index in the related art;
fig. 2 is a diagram illustrating a feedback information transmission at a start position of a next slot indicated by a starting Symbol Index in the related art;
fig. 3 is a flowchart illustrating a method for indicating transmission of feedback information suitable for a network side device according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating the functional division of the feedback interval indication field and the start symbol indication field according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of the second bit field and the start symbol indication information combination according to the first embodiment of the invention;
fig. 6 shows a schematic diagram of the second bit field and the start symbol indication information combined according to the second embodiment of the invention;
fig. 7 is a schematic block diagram of a device for indicating feedback information transmission suitable for a network side device according to an embodiment of the present invention;
FIG. 8 shows a schematic block diagram of a network side device of an embodiment of the invention;
fig. 9 is a flowchart illustrating a method for indicating feedback information transmission suitable for a terminal device according to an embodiment of the present invention;
fig. 10 shows a schematic block diagram of a terminal device of an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A scheme of a method for indicating feedback information transmission suitable for a network device according to an embodiment of the present invention is specifically described below with reference to fig. 3 to 6.
As shown in fig. 3, the method for indicating feedback information transmission according to the embodiment of the present invention is applicable to a network side device, and specifically includes the following steps:
The first bit field and the second bit field preferably carry binary information, and perform sending indication of the feedback information by using a decimal value corresponding to the binary information, and further specifically, when a terminal device is indicated by the first bit field to send a time slot position of the feedback information to a network side device, the binary information in the first bit field represents a decimal value K, for example, when the binary information in the first bit field is 011, K is taken as 3; and the slot position refers to a slot distance (K) between data received by the terminal device and sent by the network side device through the PDSCH and a PUCCH used by the terminal device for sending feedback information by performing uplink feedback on the data received by the PDSCH, that is, the slot position indicates a time length that the terminal device needs to wait from receiving user data to sending the feedback information, for example, if the terminal device receives data sent by the network side device through the PDSCH at a slot n, the terminal device needs to send the feedback information at the slot n + K.
And step 304, combining the information of the second bit field and the start symbol indication field to indicate the target position of the start symbol of the feedback information sent by the terminal device in the target time slot corresponding to the time slot position.
It can be known that, in this step, the second bit field in the feedback interval indication field (i.e. K1) and the start Symbol indication field (i.e. Starting Symbol Index) together indicate the start Symbol position for sending the feedback information, and since part of bits in K1 are used for indicating the start Symbol position for sending the feedback information, the number of bits for indicating the start Symbol position for sending the feedback information is obviously increased, so that more feedback information sending positions can be indicated, thereby meeting the requirement of fast sending of feedback information of URLLC data.
As shown in fig. 4, the feedback interval indication field includes a first bit field and a second bit field, where the first bit field is used to indicate a slot position, and the combined second bit field and the start symbol indication field are used to indicate a start symbol position.
In the embodiment, in the design of the PUCCH for feedback information transmission, the characteristics of URLLC service are fully considered, a feedback interval indication field (i.e., K1) which is one of parameters for indicating the transmission position of the PUCCH for carrying feedback information is divided into two bit fields, one bit field (i.e., a first bit field) is used for indicating the slot position of the terminal device for transmitting feedback information to the network-side device, and the other bit field (i.e., a second bit field) is combined with two start symbol indication fields of the parameters for indicating the transmission position of the PUCCH for carrying feedback information, so as to indicate the start symbol position of the terminal device for transmitting feedback information, i.e., which symbol in the target slot indicated by the first bit field starts to transmit feedback information, and further, the feedback interval indication field and the start symbol indication field are transmitted to the terminal device, so that the start symbol position for transmitting feedback information is determined by using the start symbol indication field, thus, the bit position for indicating the start symbol position is increased by combining the second bit field and the start symbol indication field in the feedback interval indication field, so as to indicate more feedback information transmission positions for the terminal device, the feedback information transmission, the problem of the current scheme is solved, and the reliability of URLLC transmission cannot be effectively increased, and the feedback data transmission can be effectively reduced.
Further, with respect to the scheme of combining the information of the second bit field and the start symbol indication field in step 304 of the foregoing embodiment, it can be specifically implemented by one of the following two embodiments, so as to accurately indicate the position of the start symbol, which is used by the terminal device to send the feedback information, in the target time slot indicated by the first bit field:
detailed description of the preferred embodiment
And accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indication field to obtain a numerical value corresponding to the target position.
It can be known that, in the information merging method, first, the values corresponding to the second bit field and the start symbol indication field are calculated respectively, and then, the values indicating the start symbol position for sending the feedback information in the target time slot are obtained after the values are summed.
As shown in fig. 5, the binary value of the second bit field in the feedback interval indication field is: 10, the corresponding decimal value is: 2, and the start symbol indicates that the binary value of the field is: 101, the corresponding decimal value is: the result of the accumulation of the value corresponding to the second bit field and the value corresponding to the start symbol indication field is: 2+5=7, that is, the terminal device needs to start transmitting the feedback information in the 7 th symbol of the target slot.
Detailed description of the invention
Combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field.
It can be known that, in the information merging method, the bits corresponding to the second bit field and the start symbol bit field are merged to obtain a new bit with an increased number of bits, and then the start symbol position for sending the feedback information in the target time slot is determined according to the value corresponding to the new bit.
As shown in fig. 6, the binary value of the second bit field in the feedback interval indication field is: 01, the start symbol indicates that the binary value of the field is: 010, the new bit obtained by combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field is: 01010, which is the sum of the digits corresponding to the two bits, and the decimal value corresponding to the new bit: 10, that is, the terminal device needs to start sending feedback information in the 10 th symbol of the target slot.
Further, in step 302 of the above embodiment, the number of bits occupied by the first bit field is defaulted to 1; or configuring and carrying bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
In this embodiment, it is usually default that the first bit field indicates, by using 1 bit, a slot position where the terminal device sends the feedback information, so as to reduce an influence on the existing standard, that is, considering that the feedback of the terminal device for the received URLLC data is generally performed in the current slot or the next slot after receiving the URLLC data, then, usually 1 bit can meet the transmission requirement of the URLLC data, and specifically, it can be distinguished by 0 and 1, as shown in fig. 5, the first bit field is taken as 1 to indicate that the feedback information is sent in the next slot, and as shown in fig. 6, the first bit field is taken as 0 to indicate that the feedback information is sent in the current slot, so that the bit sizes of the existing feedback interval indication field K1 and the start Symbol indication field start Symbol Index are not changed, and the influence on the existing standard is small; or the information of the number of bits occupied by the first bit field can be configured and carried by the high-level signaling or the downlink control information, so that the real-time dynamic adjustment of the number of bits occupied by the first bit field can be realized and the terminal equipment can be informed in time.
Fig. 7 is a schematic block diagram illustrating a device for indicating feedback information transmission suitable for a network device according to an embodiment of the present invention.
As shown in fig. 7, a device 40 for indicating feedback information transmission according to an embodiment of the present invention is applied to a network side device, and the device 40 includes: a configuration module 402, a processing module 404, and a sending module 406.
The configuration module 402 is configured to divide a feedback interval indication field into a first bit field and a second bit field, and configure a time slot position where the first bit field indicates a terminal device to send feedback information to a network side device; the processing module 404 is configured to perform information merging on the second bit field and the start symbol indication field to indicate a target position of a start symbol of the feedback information sent by the terminal device in a target timeslot corresponding to the timeslot position; the sending module 406 is configured to send the feedback interval indication field and the start symbol indication field to the terminal device, so that the terminal device sends the feedback information according to the time slot position and the target position.
In the embodiment, in the design of the PUCCH for feedback information transmission, the characteristics of URLLC service are fully considered, a feedback interval indication field (i.e., K1) which is one of parameters for indicating the transmission position of the PUCCH for carrying feedback information is divided into two bit fields, one bit field (i.e., a first bit field) is used for indicating the slot position of the terminal device for transmitting feedback information to the network side device, and the other bit field (i.e., a second bit field) is combined with two start symbol indication fields of parameters for indicating the transmission position of the PUCCH for carrying feedback information, so as to indicate the start symbol position of the terminal device for transmitting feedback information, i.e., which symbol in the target slot indicated by the first bit field starts to transmit feedback information, and further, the feedback interval indication field and the start symbol indication field are transmitted to the terminal device, so that the start symbol position for transmitting feedback information is determined by using the start symbol indication field, thus, the bit number for indicating the start symbol position is increased by combining the second bit field with the start symbol indication field, so as to indicate more transmission positions of feedback information, the problem of the feedback information transmission in some existing schemes is solved, and the reliability of URLLC transmission cannot be effectively increased, and the reliability of feedback data transmission cannot be effectively reduced.
The first bit field and the second bit field preferably carry binary information, and perform sending indication of the feedback information by using a decimal value corresponding to the binary information, and further specifically, when a terminal device is indicated by the first bit field to send a time slot position of the feedback information to a network side device, the binary information in the first bit field represents a decimal value K, for example, when the binary information in the first bit field is 011, K is taken as 3; and the slot position refers to a slot distance (i.e., K) between data received by the terminal device and sent by the network side device via the PDSCH and a PUCCH used by the terminal device for performing uplink feedback on the data received by the PDSCH to send feedback information, that is, the slot distance represents a time period that the terminal device needs to wait from receiving user data to sending feedback information, for example, if the terminal device receives the data sent by the network side device via the PDSCH in slot n, the terminal device needs to send feedback information in slot n + K.
Further, in the foregoing embodiment, the processing module 404 is specifically configured to: accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indicating field to obtain a numerical value corresponding to the target position; or combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field.
In this embodiment, information combination of the second bit field and the start symbol indication field can be implemented in at least two ways, so as to be able to accurately indicate the position of the start symbol, which is used by the terminal device to send feedback information, in the target time slot indicated by the first bit field, specifically: firstly, respectively calculating numerical values corresponding to a second bit field and a starting symbol indicating field, and then adding the numerical values to obtain a numerical value indicating a starting symbol position for sending feedback information in a target time slot; and the other information merging mode is that firstly, bit positions corresponding to the second bit field and the starting symbol bit field are merged to obtain a new bit position with an increased number of bits, and then the starting symbol position for sending the feedback information in the target time slot is determined according to a value corresponding to the new bit position.
Further, in the above embodiment, the configuration module 402 is further configured to: defaulting the number of bits occupied by the first bit field to 1; or configuring and bearing the bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
In this embodiment, it is usually default that the first bit field indicates, by using 1 bit, a time slot position where the terminal device sends the feedback information, so as to reduce an influence on the existing standard, that is, considering that the feedback of the terminal device for the received URLLC data is generally performed in the current time slot where the URLLC data is received or in a next time slot, then, usually, 1 bit can meet a transmission requirement of the URLLC data, and specifically, it can be distinguished by 0 and 1, as shown in fig. 5, the first bit field is taken as 1 to indicate that the feedback information is sent in the next time slot, and as shown in fig. 6, the first bit field is taken as 0 to indicate that the feedback information is sent in the current time slot, so that the bit sizes of the existing feedback interval indication field K1 and the start Symbol indication field start Symbol Index are not changed, and the influence on the existing standard is small; or the bit number information occupied by the first bit field can be configured and carried by the high-level signaling or the downlink control information, so that the real-time dynamic adjustment of the bit number occupied by the first bit field can be realized, and the terminal equipment can be informed in time.
In a specific implementation, the configuration module 402 and the Processing module 404 may be a Central Processing Unit (CPU), a baseband processor, or the like; the sending module 406 may be an antenna, a transmitter, etc.
Fig. 8 shows a schematic block diagram of a network side device of an embodiment of the invention.
As shown in fig. 8, the network side device 50 according to the embodiment of the present invention includes the apparatus 40 for indicating feedback information transmission described in any one of the embodiments of the second aspect, and therefore, the network side device 50 has all the beneficial effects of the apparatus 40 for indicating feedback information transmission described in any one of the embodiments, which are not described herein again. Further, the network side device 50 may include a base station and/or a base station control device.
Fig. 9 is a flowchart illustrating a method for indicating feedback information transmission suitable for a terminal device according to an embodiment of the present invention.
As shown in fig. 9, the method for indicating feedback information transmission suitable for a terminal device according to the embodiment of the present invention specifically includes the following steps:
In this embodiment, when designing a PUCCH for transmitting feedback information based on a network side device, a feedback interval indication field (i.e., K1) of one parameter for indicating a PUCCH transmission position carrying feedback information is divided into two bit fields, and one bit field is combined with two start symbol indication fields of parameters for indicating a PUCCH transmission position carrying feedback information, so as to indicate a start symbol position for transmitting feedback information, when receiving the feedback interval indication field and the start symbol indication field, first demodulating and reading a first bit field in the feedback interval indication field to determine a slot position for transmitting feedback information, and then demodulating and reading a second bit field and the start symbol indication field to determine a start symbol position for transmitting feedback information, i.e., which symbol in a target slot indicated by the first bit field starts to transmit feedback information, so that a bit number for feeding back the start symbol position indication is increased based on the combination of information in the second bit field and the start symbol indication field in the feedback interval indication field, so as to indicate more feedback information transmission positions for a terminal device, thereby solving a problem that the feedback information transmission in some scenarios cannot be transmitted quickly in an llc, and thereby effectively reducing reliability of data transmission.
The first bit field and the second bit field preferably carry binary information, and perform sending indication of the feedback information by using a decimal value corresponding to the binary information, and further specifically, when a terminal device is indicated by the first bit field to send a time slot position of the feedback information to a network side device, the binary information in the first bit field represents a decimal value K, for example, when the binary information in the first bit field is 011, K is taken as 3; and the slot position refers to a slot distance (i.e., K) between data received by the terminal device and sent by the network side device via the PDSCH and a PUCCH used by the terminal device for performing uplink feedback on the data received by the PDSCH to send feedback information, that is, the slot distance represents a time period that the terminal device needs to wait from receiving user data to sending feedback information, for example, if the terminal device receives the data sent by the network side device via the PDSCH in slot n, the terminal device needs to send feedback information in slot n + K.
Fig. 10 shows a schematic block diagram of a terminal device of an embodiment of the present invention.
As shown in fig. 10, a terminal device 70 according to an embodiment of the present invention includes: a transceiver 702, a processor 704, and a memory 706.
The transceiver 702 is configured to receive a feedback interval indication field and a start symbol indication field sent by a network side device, where the feedback interval indication field includes a first bit field and a second bit field, and the second bit field and the start symbol indication field are subjected to information combining; the processor 704 is configured to perform the following operations when executing the computer program stored in the memory 706: analyzing the first bit field to determine a time slot position for sending feedback information to the network side equipment; analyzing the second bit field and the starting symbol indication field to determine a target position of a starting symbol for sending the feedback information in a target time slot corresponding to the time slot position; and the transceiver 702 is further configured to: and starting to send the feedback information on the starting symbol corresponding to the target position in the target time slot.
In this embodiment, when designing a PUCCH for transmitting feedback information based on a network side device, a feedback interval indication field (i.e., K1) of one parameter for indicating a PUCCH transmission position carrying feedback information is divided into two bit fields, and one bit field is combined with two start symbol indication fields of parameters for indicating a PUCCH transmission position carrying feedback information, so as to indicate a start symbol position for transmitting feedback information, when receiving the feedback interval indication field and the start symbol indication field, first demodulating and reading a first bit field in the feedback interval indication field to determine a slot position for transmitting feedback information, and then demodulating and reading a second bit field and the start symbol indication field to determine a start symbol position for transmitting feedback information, i.e., which symbol in a target slot indicated by the first bit field starts to transmit feedback information, so that a bit number for feeding back the start symbol position indication is increased based on the combination of information in the second bit field and the start symbol indication field in the feedback interval indication field, so as to indicate more feedback information transmission positions for a terminal device, thereby solving a problem that the feedback information transmission in some scenarios cannot be transmitted quickly in an llc, and thereby effectively reducing reliability of data transmission.
The first bit field and the second bit field preferably carry binary information, and perform sending indication of the feedback information by using a decimal value corresponding to the binary information, and further specifically, when a terminal device is indicated by the first bit field to send a time slot position of the feedback information to a network side device, the binary information in the first bit field represents a decimal value K, for example, when the binary information in the first bit field is 011, K is taken as 3; and the slot position refers to a slot distance (K) between data received by the terminal device and sent by the network side device through the PDSCH and a PUCCH used by the terminal device for sending feedback information by performing uplink feedback on the data received by the PDSCH, that is, the slot position indicates a time length that the terminal device needs to wait from receiving user data to sending the feedback information, for example, if the terminal device receives data sent by the network side device through the PDSCH at a slot n, the terminal device needs to send the feedback information at the slot n + K.
Further, in some of the embodiments described above, any process or method descriptions in flowcharts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Further, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description of the present specification, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and those of ordinary skill in the art may understand the specific meanings of the above terms in the disclosed embodiments according to the specific circumstances.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A method for indicating the transmission of feedback information is suitable for network side equipment, and is characterized in that the method comprises the following steps:
dividing a feedback interval indication domain into a first bit domain and a second bit domain, and configuring a time slot position of the first bit domain indicating that terminal equipment sends feedback information to network side equipment;
combining the information of the second bit field and the start symbol indication field to indicate a target position of a start symbol of the feedback information sent by the terminal device in a target time slot corresponding to the time slot position, specifically including: accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indicating field to obtain a numerical value corresponding to the target position; or combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field;
and sending the feedback interval indication domain and the starting symbol indication domain to the terminal equipment, so that the terminal equipment sends the feedback information according to the time slot position and the target position.
2. The method of claim 1, wherein the configuring the first bit field to indicate a time slot position for the terminal device to send feedback information to the network side device comprises:
defaulting the number of bits occupied by the first bit field to 1; or
And configuring and bearing bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
3. A method for indicating the sending of feedback information is applicable to terminal equipment, and is characterized in that the method for indicating the sending comprises the following steps:
receiving a feedback interval indication field and a starting symbol indication field sent by a network side device, wherein the feedback interval indication field comprises a first bit field and a second bit field, and the second bit field and the starting symbol indication field are subjected to information combination;
analyzing the first bit field to determine a time slot position for sending feedback information to the network side equipment;
analyzing the second bit field and the starting symbol indication field to determine a target position of a starting symbol for sending the feedback information in a target time slot corresponding to the time slot position;
and starting to send the feedback information on the starting symbol corresponding to the target position in the target time slot.
4. A device for indicating the transmission of feedback information is suitable for a network side device, and is characterized in that the device comprises:
the configuration module is used for dividing the feedback interval indication domain into a first bit domain and a second bit domain, and configuring the time slot position of the first bit domain indicating the terminal equipment to send feedback information to the network side equipment;
a processing module, configured to perform information merging on the second bit field and the start symbol indication field to indicate a target position of a start symbol of the feedback information sent by the terminal device in a target timeslot corresponding to the timeslot position, and specifically configured to: accumulating the numerical value corresponding to the second bit field and the numerical value corresponding to the starting symbol indicating field to obtain a numerical value corresponding to the target position; or combining the bit corresponding to the second bit field and the bit corresponding to the start symbol indication field into a new bit to indicate the target position by a numerical value corresponding to the new bit, wherein the bit number of the new bit is the sum of the bit number of the bit corresponding to the second bit field and the bit number of the bit corresponding to the start symbol indication field;
and the sending module is used for sending the feedback interval indication domain and the starting symbol indication domain to the terminal equipment so that the terminal equipment sends the feedback information according to the time slot position and the target position.
5. The device of claim 4, wherein the configuration module is further configured to:
defaulting the number of bits occupied by the first bit field to 1; or
And configuring and bearing bit number information occupied by the first bit field by adopting a high-level signaling or downlink control information.
6. A network-side device, comprising: a transmission indicating device of feedback information according to claim 4 or 5.
7. A terminal device, comprising:
the transceiver receives a feedback interval indication field and a start symbol indication field sent by a network side device, wherein the feedback interval indication field comprises a first bit field and a second bit field, and the second bit field and the start symbol indication field are subjected to information combination;
a processor and a memory, the processor being configured to implement the following when executing a computer program stored in the memory:
analyzing the first bit field to determine a time slot position for sending feedback information to the network side equipment;
analyzing the second bit field and the start symbol indication field to determine a target position of a start symbol for sending the feedback information in a target time slot corresponding to the time slot position; and
the transceiver is further configured to: and starting to send the feedback information on the starting symbol corresponding to the target position in the target time slot.
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