Prohibition, allowance, or adaptation of sounding reference signal configuration having non-supported sounding reference signal sequence length
Provided are communication methods and related devices and nodes for prohibition, allowance, or adaption of a sounding reference signal (SRS) configuration having a non-supported SRS sequence length. A method performed by a communication device comprises at least one of (i) receiving a SRS configuration from a network node having an SRS sequence length that is non-supported by the communication device, the SRS configuration involving at least one of a bandwidth configuration, a transmission comb configuration, and a partial sounding factor configuration, and (ii) not receiving the SRS configuration based on a determination by the network node that the SRS configuration has an SRS sequence length that is not supported by the communication device. The method also comprises prohibiting or allowing the SRS configuration.
1 . A method performed by a communication device in a telecommunications network, the method comprising:
receiving a sounding reference signal (SRS) configuration from a network node having an SRS sequence length that is non-supported by the communication device, the SRS configuration involving at least one of a bandwidth configuration, a transmission comb configuration, and a partial sounding factor configuration; and
adjusting the SRS configuration, wherein the adjusting comprises:
adjusting the frequency allocation and a corresponding SRS sequence for an SRS resource that violates rules of supported SRS sequence lengths; and
wherein, when the configured partial sounding factor P f results in a non-supported SRS sequence length, updating the partial sounding factor P f to another value that fulfills the requirement of supported SRS sequence lengths.
2 . The method according to claim 1 , wherein a bandwidth is an SRS frequency bandwidth.
3 . The method according to claim 1 , wherein when the configured partial sounding factor P f results in a non-supported SRS sequence length, the adjusting comprises updating the partial sounding factor P f to the highest number within a set of supported partial-sounding factors that fulfills the requirement of supported SRS sequence lengths.
4 . The method according to claim 1 , wherein the adjusting comprises adjusting the frequency allocation of an SRS resource that violates the rules of supported sequence lengths.
5 . The method according to claim 4 , wherein when the communication device is configured with a partial sounding factor, a transmission comb, and a per-hop frequency bandwidth that result in a non-supported SRS sequence length, the adjusting comprises adding one or more subcarriers to or removing one or more sub-carriers from the SRS frequency allocation until an SRS sequence length that is supported is attained.
6 . The method according to claim 4 , wherein when the SRS configuration result in a non-supported SRS sequence length, the adjusting comprises omitting sub-carriers in a lower end and/or upper end of a per-hop frequency band until the SRS sequence length becomes supported.
7 . The method according to claim 4 , wherein a most central subcarrier in the configured bandwidth is to be sounded, particularly most central subcarriers in the configured bandwidth are to be sounded.
8 . The method according to claim 1 further comprising transmitting, to the network node, a SRS according to the adjusted SRS configuration.
9 . A communication device comprising:
processing circuitry; and
memory communicatively connected to the processing circuitry, wherein the memory comprises instructions that, when executed by the processing circuitry, causes the communication device to:
receive a sounding reference signal (SRS) configuration from a network node having an SRS sequence length that is non-supported by the communication device, the SRS configuration involving at least one of a bandwidth configuration, a transmission comb configuration, and a partial sounding factor configuration; and
adjust the SRS configuration, wherein to adjust the SRS configuration, the instructions, when executed by the processing circuitry, further cause the communication device to:
adjust the frequency allocation and a corresponding SRS sequence for an SRS resource that violates rules of supported SRS sequence lengths; and
when the configured partial sounding factor P f results in a non-supported SRS sequence length, update the partial sounding factor P f to another value that fulfills the requirement of supported SRS sequence lengths.
10 . A method performed by a network node in a telecommunications network, the method comprising:
signalling, to a communication device, a sounding reference signal (SRS) configuration having an SRS sequence length that is non-supported by the communication device, the SRS configuration involving at least one of a bandwidth configuration, a transmission comb configuration, and a partial sounding factor configuration; and
responsive to the signalling
receiving from the communication device a SRS according to an adjusted SRS configuration which is supported by the communication device, wherein:
the adjusted SRS configuration comprises an adjusted frequency allocation and an adjusted corresponding SRS sequence for an SRS resource that violates rules of supported SRS sequence lengths; and
when the configured partial sounding factor P f results in a non-supported SRS sequence length, the method further comprises updating the partial sounding factor P f to another value that fulfills the requirement of supported SRS sequence lengths.
11 . A network node comprising:
processing circuitry; and
memory communicatively connected to the processing circuitry, wherein the memory comprises instructions that, when executed by the processing circuitry, causes the network node to:
signal, to a communication device, a sounding reference signal (SRS) configuration having an SRS sequence length that is non-supported by the communication device, the SRS configuration involving at least one of a bandwidth configuration, a transmission comb configuration, and a partial sounding factor configuration; and
responsive to signalling the SRS configuration, receive from the communication device a SRS according to an adjusted SRS configuration supported by the communication, wherein:
the adjusted SRS configuration comprises an adjusted frequency allocation and an adjusted corresponding SRS sequence for an SRS resource that violates rules of supported SRS sequence lengths; and
when the configured partial sounding factor P f results in a non-supported SRS sequence length, the partial sounding factor P f is updated to another value that fulfills the requirement of supported SRS sequence lengths.