Parameter based adaption of a transmission scheme on a radio resource
A user device, UE, and a base station, BS, for a wireless communication system is described. Each is using a transmission scheme on a radio resource, and is to determine one or more parameters of a radio channel associated with the radio resource, and to adapt the transmission scheme by selecting an additional radio resource on the basis of the determined one or more parameters. Further a wireless communication system, comprising two or more of the above devices, corresponding methods and a computer program product are described.
1. A user device, UE, for a wireless communication system, the user device comprising:
one or more antennas or an antenna array having a plurality of antenna elements,
a signal processor; and
a transceiver,
wherein the user device is to use a transmission scheme on a radio resource,
wherein the user device is to adapt the transmission scheme by selecting an additional radio resource on the basis of one or more parameters or by selecting an adapted transmission scheme,
wherein the user device is to receive the one or more of parameters or the adapted transmission scheme from another device of the wireless communication system, and wherein the user device is to receive one or more of the following:
a parameter referring to downlink control information, DCI, to set up one or more transmission schemes with k-repetitions separated in time,
a configuration parameter referring to a random-access procedure,
a DCI indicating frequency carriers or subbands,
a broadcast system information block, SIB, indicating a frequency separation between frequency carriers or subbands,
information of prior observed degradation events,
information referring to a clustering of user devices.
2. The user device of claim 1 , wherein the parameters further comprise a probability that the line of sight for the transmission is blocked.
3. The user device of claim 1 , wherein the parameters further comprise coherence parameters of the radio channel.
4. The user device of claim 3 , wherein the coherence parameters refer to one or more of time, space, frequency and/or polarization.
5. The user device of claim 3 ,
wherein the user device is to adapt the transmission scheme such that radio resource and the additional radio resource are statistically uncorrelated, by selection of the additional radio resource such that the difference between the radio resource and the additional radio resource with regard to the determined parameters is larger than the coherence parameter, or
wherein the user device is to adapt the transmission scheme such that radio resource and the additional radio resource are statistically correlated, by selection of the additional radio resource such that the difference between the radio resource and the additional radio resource with regard to the determined parameters is smaller than the coherence parameter.
6. The user device of claim 3 , wherein the user device is to determine the coherence parameters by using reference symbols, RS.
7. A base station, BS, for a wireless communication system, using a transmission scheme on a radio resource, the base station comprising:
one or more antennas or an antenna array having a plurality of antenna elements,
a signal processor; and
a transceiver,
wherein the base station is to use an adapted transmission scheme, or one or more parameters of a radio channel associated with the radio resource for adapting the transmission scheme by selecting an additional radio resource on the basis of the one or more parameters,
wherein the base station is to transmit the one or more of parameters or the adapted transmission scheme to a user device of the wireless communication system, and
wherein the base station is to transmit one or more of the following:
a parameter referring to downlink control information, DCI, to set up one or more transmission schemes with k-repetitions separated in time,
a configuration parameter referring to a random-access procedure,
a DCI indicating frequency carriers or subbands,
a broadcast system information block, SIB, indicating a frequency separation between frequency carriers or subbands,
information of prior observed degradation events,
information referring to a clustering of user devices.
8. The base station of claim 7 , wherein the parameters further comprise a probability that the line of sight for the transmission is blocked.
9. The base station of claim 7 , wherein the parameters further comprise coherence parameters of the radio channel.
10. The base station of claim 9 , wherein the base station is to determine the one or more coherence parameters by using reference symbols, RS.
11. The base station of claim 10 , wherein the reference symbols are comprised within the transmission scheme.
12. A method of operating a user device, UE, for a wireless communication system, using a transmission scheme on a radio resource, comprising adapting, by the user device, a transmission scheme by selecting an additional radio resource on the basis of one or more parameters or by selecting an adapted transmission scheme,
receiving, by the user device, the one or more of parameters or the adapted transmission scheme from another device of the wireless communication system,
wherein the user device receives one or more of the following:
a parameter referring to downlink control information, DCI, to set up one or more transmission schemes with k-repetitions separated in time,
a configuration parameter referring to a random-access procedure,
a field associated to the DCI comprising a frequency separation value,
a broadcast system information block, SIB, comprising a value indicating a frequency separation between frequency carriers or subbands,
information of prior observed degradation events,
information referring to a clustering of user devices.
13. The method of claim 12 , wherein the parameters further comprise a probability that the line of sight for the transmission is blocked.
14. The method of claim 12 , wherein the parameters further comprise coherence parameters of the radio channel.
15. The method of claim 13 , wherein the coherence parameters refer to one or more of time, space, frequency and/or polarization.
16. A method of operating a base station for a wireless communication system, using a transmission scheme on a radio resource, comprising
determining, by the base station,
an adapted transmission scheme, or one or more parameters of a radio channel associated with the radio resource for adapting the transmission scheme by selecting an additional radio resource on the basis of the determined one or more parameters,
transmitting, by the base station, the one or more of parameters or the adapted transmission scheme to a user device of the wireless communication system,
wherein the base station transmits one or more of the following:
a parameter referring to downlink control information, DCI, to set up one or more transmission schemes with k-repetitions separated in time,
a configuration parameter referring to a random-access procedure,
a DCI indicating frequency carriers or subbands,
a broadcast system information block, SIB, indicating a frequency separation between frequency carriers or subbands,
information of prior observed degradation events,
information referring to a clustering of user devices.