Communication method and communication apparatus
This application discloses a communication method and a communications apparatus. The method includes: receiving, by a terminal device, reference signal configuration information sent by a network device, where the reference signal configuration information includes at least one of the following information: a beam sweeping type and a reference signal beam indication; receiving, by the terminal device, a reference signal and data that are sent by the network device; and determining, by the terminal device based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same orthogonal frequency division multiplexing (OFDM) symbol as the reference signal. The corresponding apparatus is further disclosed. According to technical solutions provided in this application, reliable data reception can be implemented.
1. A communication method, comprising:
receiving, by a terminal device, reference signal configuration information from a network device, wherein the reference signal configuration information comprises the following information: a beam sweeping type and a reference signal beam indication;
receiving, by the terminal device, a reference signal and data from the network device; and
determining, by the terminal device based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same orthogonal frequency division multiplexing (OFDM) symbol as the reference signal; wherein the determining, by the terminal device based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same OFDM symbol as the reference signal comprises at least one of:
if the beam sweeping type comprises at least one of sweeping a receive beam or not sweeping a transmit beam, determining, by the terminal device, that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the beam sweeping type comprises at least one of sweeping a transmit beam or not sweeping a receive beam, and the reference signal beam indication is the same as a beam indication of the data, determining, by the terminal device, that data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the reference signal beam indication is different from a beam indication of the data, determining, by the terminal device, that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal.
2. The method according to claim 1 , wherein the data is information on a physical downlink shared channel or a physical downlink control channel.
3. A communications apparatus, comprising:
a receiver;
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the apparatus to:
receive, by using the receiver, reference signal configuration information from a network device, wherein the reference signal configuration information comprises the following information: a beam sweeping type and a reference signal beam indication, wherein
receive, by using the receiver, a reference signal and data from the network device; and
determine, based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same orthogonal frequency division multiplexing (OFDM) symbol as the reference signal; wherein the determination of whether data can be mapped onto another resource element that is located on a same OFDM symbol as the reference signal comprises at least one of:
if the beam sweeping type comprises at least one of sweeping a receive beam or not sweeping a transmit beam, a determination that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the beam sweeping type comprises at least one of sweeping a transmit beam or not sweeping a receive beam, and the reference signal beam indication is the same as a beam indication of the data, a determination that that data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the reference signal beam indication is different from a beam indication of the data, a determination that that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal.
4. The communications apparatus according to claim 3 , wherein the data is information on a physical downlink shared channel or a physical downlink control channel.
5. A non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions when executed by a computer, causes the computer to implement operations including:
receiving reference signal configuration information from a network device, wherein the reference signal configuration information comprises the following information: a beam sweeping type and a reference signal beam indication;
receiving a reference signal and data from the network device; and
determining, based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same orthogonal frequency division multiplexing (OFDM) symbol as the reference signal; wherein the determining, based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same OFDM symbol as the reference signal comprises at least one of:
if the beam sweeping type comprises at least one of sweeping a receive beam or not sweeping a transmit beam, determining that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the beam sweeping type comprises at least one of sweeping a transmit beam or not sweeping a receive beam, and the reference signal beam indication is the same as a beam indication of the data, determining that data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the reference signal beam indication is different from a beam indication of the data, determining that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal.
6. The non-transitory computer-readable medium according to claim 5 , wherein the data is information on a physical downlink shared channel or a physical downlink control channel.
7. A communications apparatus, comprising:
a processor, configured to execute computer program of a memory to performing operations that comprise:
receiving reference signal configuration information from a network device, wherein the reference signal configuration information comprises the following information: a beam sweeping type and a reference signal beam indication;
receiving a reference signal and data from the network device; and
determining, based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same orthogonal frequency division multiplexing (OFDM) symbol as the reference signal; wherein the determining, based on the reference signal configuration information, whether data can be mapped onto another resource element that is located on a same OFDM symbol as the reference signal comprises at least one of:
if the beam sweeping type comprises at least one of sweeping a receive beam or not sweeping a transmit beam, determining that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the beam sweeping type comprises at least one of sweeping a transmit beam or not sweeping a receive beam, and the reference signal beam indication is the same as a beam indication of the data, determining that data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal; or
if the reference signal beam indication is different from a beam indication of the data, determining that no data can be mapped onto the another resource element that is located on the same OFDM symbol as the reference signal.
8. The communications apparatus according to claim 7 , wherein the data is information on a physical downlink shared channel or a physical downlink control channel.