Control information sending method, control information receiving method, apparatus, and storage medium
This application discloses a control information sending method, a control information receiving method, an apparatus, and a storage medium, applied to a communication system. The control information sending method includes: sending at least one piece of downlink control information and a corresponding downlink physical shared channel, where the downlink control information carries a count sequence number; and receiving feedback information from user equipment, where the feedback information includes DCI miss-detection information, the count sequence number indicates an accumulated quantity of uplink control information, the uplink control information corresponds to a downlink physical shared channel scheduled by using the downlink control information, and the uplink control information is used to transmit the feedback information.
1 . A control information sending method, comprising:
configuring an enabling rule based on capability information of at least one user equipment, so that the at least one user equipment can determine, according to the enabling rule, that a count sequence number is available
sending at least one piece of downlink control information (DCI) and a downlink physical shared channel corresponding to the at least one piece of DCI, wherein the at least one piece of DCI carries the count sequence number; and
detecting feedback information from the at least one user equipment, wherein the feedback information comprises DCI miss-detection information,
wherein the count sequence number indicates an accumulated quantity of pieces of uplink control information, one piece of uplink control information corresponds to a downlink physical shared channel scheduled by using the at least one piece of DCI, and the uplink control information is used for transmitting the feedback information.
2 . The method according to claim 1 , wherein the method further comprises:
in response to the detecting the feedback information, determining, based on the feedback information, that the at least one piece of DCI corresponding to the uplink control information is not detected.
3 . The method according to claim 1 , wherein
the DCI miss-detection information comprises an accumulated quantity of pieces of uplink control information corresponding to DCI that is not detected.
4 . The method according to claim 1 , wherein
the at least one piece of DCI further carries an indication for temporarily disabling NACK only, to control the user equipment to temporarily disable a NACK-only feedback mechanism.
5 . The method according to claim 1 , wherein the feedback information further comprises a hybrid automatic repeat request (HARQ) response message.
6 . The method according to claim 1 , wherein
the count sequence number is an independent field or a HARQ process number field.
7 . The method according to claim 1 , wherein
a quantity of bits occupied by the count sequence number is at least one bit and at most six bits.
8 . A control information receiving method, comprising:
receiving from a base station at least one piece of downlink control information (DCI) and a downlink physical shared channel corresponding to the at least one piece of DCI, wherein the at least one piece of DCI carries a count sequence number;
generating corresponding feedback information based on the count sequence number, wherein the feedback information comprises DCI miss-detection information, wherein the generating corresponding feedback information based on the count sequence number specifically comprises:
determining a latest count value based on a count sequence number field in the at least one piece of DCI;
obtaining a difference between the latest count value and a local count value, wherein the local count value is a recorded value that corresponds to a last received count sequence number field;
determining, based on the difference, that the at least one piece of DCI is not detected; and
in response to determining that the at least one piece of DCI is not detected, generating the feedback information; and
sending the feedback information to the base station, wherein
the count sequence number indicates an accumulated quantity of pieces of uplink control information, one piece of the uplink control information corresponds to a downlink physical shared channel scheduled by using the at least one piece of DCI, and the uplink control information is used to transmit the feedback information.
9 . The method according to claim 8 , wherein
the count sequence number is an independent field or a HARQ process number field.
10 . The method according to claim 8 , wherein
the DCI miss-detection information comprises an accumulated quantity of pieces of uplink control information corresponding to DCI that is not detected.
11 . The method according to claim 8 , wherein
the downlink control information further carries an indication for temporarily disabling NACK only, and the method further comprises temporarily disabling a NACK-only feedback mechanism.
12 . The method according to claim 8 , wherein the obtaining a difference between the latest count value and a local count value, and determining, based on the difference, that the at least one piece of DCI is not detected specifically comprises:
determining whether the latest count value is greater than the local count value;
if the latest count value is greater than the local count value, obtaining the difference according to the following formula:
ΔS=S n −S, wherein ΔS is the difference, S n is the latest count value, and S is the local count value; or
if the latest count value is not greater than the local count value, obtaining the difference according to the following formula:
ΔS=S b +N−S, wherein N=2 n , and n is a field length of the count sequence number; and
determining that the difference is not 1; and
in response to determining that the difference is not 1, determining that the user equipment did not detect all DCI corresponding to 45-1 pieces of uplink control information.
13 . The method according to claim 8 , wherein the at least one piece of DCI further carries a downlink assignment index, and the generating corresponding feedback information based on the count sequence number specifically comprises:
determining, based on the downlink assignment index, whether DCI corresponding to the same uplink control information is not detected;
if the at least one piece of DCI corresponding to the same uplink control information is not detected, generating a corresponding hybrid automatic repeat request response message; or
if the at least one piece of DCI corresponding to the same uplink control information is detected, determining, based on the count sequence number, whether any other DCI corresponding to the uplink control information is not detected; and
if any other DCI corresponding to the uplink control information is not detected, generating corresponding DCI miss-detection information.
14 . The method according to claim 13 , wherein the determining, based on the downlink assignment index, whether DCI corresponding to the same uplink control information is not detected specifically comprises:
determining a latest count value based on a count sequence number field in the at least one piece of DCI;
obtaining a difference between the latest count value and a local count value, wherein the local count value is a value that is recorded by the user equipment and that corresponds to a last received count sequence number field; and
determining, based on the difference, whether all DCI corresponding to the uplink control information is not detected.
15 . The method according to claim 14 , wherein the determining, based on the difference, whether all DCI corresponding to the uplink control information is not detected specifically comprises:
determining whether the latest count value is greater than the local count value;
if the latest count value is greater than the local count value, obtaining the difference according to the following formula:
ΔS=S n −S, wherein ΔS is the difference, S n is the latest count value, and S is the local count value; or
if the latest count value is not greater than the local count value, obtaining the difference according to the following formula:
ΔS=S n +N−S, wherein N=2 n , and n is a field length of the count sequence number; and
determining whether the difference is 1; and
if the difference is 1, determining that the user equipment did not detect all DCI corresponding to the uplink control information; or
if the difference is not 1, determining that the user equipment did not detect all DCI corresponding to ΔS−1 pieces of uplink control information.
16 . An apparatus, comprising:
a memory, configured to store a computer program; and
a processor, configured to execute the computer program stored in the memory, wherein when the computer program is executed, the processor is configured to perform the method according to the following steps:
configuring an enabling rule based on capability information of at least one user equipment, so that the at least one user equipment can determine, according to the enabling rule, that a count sequence number is available
sending at least one piece of downlink control information (DCI) and a downlink physical shared channel corresponding to the at least one piece of DCI, wherein the at least one piece of DCI carries the count sequence number; and
detecting feedback information from the at least one user equipment, wherein the feedback information comprises DCI miss-detection information,
wherein the count sequence number indicates an accumulated quantity of pieces of uplink control information, one piece of uplink control information corresponds to a downlink physical shared channel scheduled by using the at least one piece of DCI, and the uplink control information is used for transmitting the feedback information.