Method and apparatus for low-latency transmission using shared SR-less resources
A method of operating a network node in a Radio Access Network includes configuring a first User Equipment with a first transmission pattern indicating time-frequency resources and configuring a second UE with a second transmission pattern indicating time-frequency resources. The method further includes receiving a first signal comprising a first message from the first UE, using a first time-frequency resource indicated by the first transmission pattern and receiving a second signal comprising a second message from the second UE, using a second time-frequency resource indicated by the second transmission pattern. The first and second time-frequency resources, at least partly, overlap. Further, the method includes decoding the first or the second message, based on a received third signal comprising the first message from the first UE, wherein the third signal is received using a third time-frequency resource indicated by the first transmission pattern.
1. A method for operating a network node, the method comprises:
configuring a first User Equipment (UE) with a first transmission pattern indicating time-frequency resources;
configuring a second UE with a second transmission pattern indicating time-frequency resources;
receiving a first signal comprising a first message from the first UE, using a first time-frequency resource indicated by the first transmission pattern;
receiving a second signal comprising a second message from the second UE, using a second time-frequency resource indicated by the second transmission pattern, wherein the first and second time-frequency resources, at least partly, overlap; and
decoding the second message, based on a received third signal comprising the first message from the first UE, wherein the third signal is received using a third time-frequency resource indicated by the first transmission pattern.
2. The method of claim 1 , wherein decoding comprises:
performing interference cancellation (IC).
3. The method of claim 1 , further comprising:
buffering a first representation of the received signals using the first and second time-frequency resources; and/or
buffering a second representation of the received signal using the third time-frequency resources.
4. The method of claim 3 , wherein the interference cancellation is based on the buffered representation of received signals.
5. The method of claim 1 , wherein the second transmission pattern indicate time-frequency resources not overlapping with the third time-frequency resource.
6. The method of claim 1 , wherein the first time-frequency resources are not overlapping with the third time-frequency resources.
7. The method of claim 1 , wherein the third signal is received before receiving the first and second signals.
8. The method of claim 1 , wherein the third signal is received after receiving the first and second signals.
9. The method of claim 1 , further comprising:
transmitting an acknowledgement to the first and/or the second UE, where the acknowledgement indicates a successful decoding of the first and/or the second message.
10. The method of claim 1 , wherein the time-frequency resources indicated by a transmission pattern are SR-less resources.
11. A network node comprising processing circuitry adapted for:
configuring a first User Equipment (UE) with a first transmission pattern indicating time-frequency resources;
configuring a second UE with a second transmission pattern indicating time-frequency resources;
receiving a first signal comprising a first message from the first UE, using a first time-frequency resource indicated by the first transmission pattern;
receiving a second signal comprising a second message from the second UE, using a second time-frequency resource indicated by the second transmission pattern, wherein the first and second time-frequency resources, at least partly, overlap; and
decoding the second message, based on a received third signal comprising the first message from the first UE, wherein the third signal is received using a third time-frequency resource indicated by the first transmission pattern.
12. The network node of claim 11 , wherein decoding comprises:
performing interference cancellation (IC).
13. The network node of claim 11 , further adapter for:
buffering a first representation of the received signals using the first and second time-frequency resources; and/or
buffering a second representation of the received signal using the third time-frequency resources.
14. The network node of claim 13 , wherein decoding the second message comprises performing interference cancellation, and wherein the interference cancellation is based on the buffered representation of received signals.
15. The network node of claim 11 , wherein the second transmission pattern indicates time-frequency resources not overlapping with the third time-frequency resource.
16. The network node of claim 11 , wherein the first time-frequency resources are not overlapping with the third time-frequency resources.
17. The network node of claim 11 , wherein the third signal is received before receiving the first and second signals.
18. The network node of claim 11 , wherein the third signal is received after receiving the first and second signals.
19. The network node of claim 11 , further adapted for:
transmitting an acknowledgement to the first- and/or the second UE, where the acknowledgement indicates a successful decoding of the first and/or the second message.
20. The network node of claim 11 , wherein the time-frequency resources indicated by a transmission pattern are SR-less resources.