Granted Patent B2

US 12,289,715 · App. 17/773,370 · Granted Apr 29, 2025

Inventors: Lianghai Ji (Aalborg, DK); Ling Yu (Kauniainen, FI); Jedrzej Stanczak (Wroclaw, PL); Jakob Lindbjerg Buthler (Aalborg, DK)

Assignee: Nokia Technologies Oy

H04W72/0453H04W72/23H04W92/18

Abstract

Claims (62)

1. An apparatus, comprising:

at least one processor; and

at least one memory comprising computer program code,

the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to

configure one or more dual-mode sidelink (SL) logical channels (LCHs) to at least one user equipment (UE) to enable simultaneous SL mode 1 and SL mode 2 transmission;

configure the dual-mode SL LCHs with two sets of logical channel prioritization (LCP) configurations,

wherein one of the LCP configurations is for mode 1 operation and another of LCP configurations is for mode 2 operation,

wherein the LCP configuration for mode 1 indicates how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode 1 resource, and

wherein the LCP configuration for mode 2 indicates a policy regarding how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode-2 resource;

receive, from the at least one UE, at least one SL buffer status report (BSR) optionally comprising buffer status for one or more of the configured dual-mode LCHs according to a network configuration; and

transmit, to the at least one UE, a resource allocation that can be applied for the dual-mode LCHs according to the network configuration.

2. The apparatus according to claim 1 , wherein, when the dual-mode SL LCHs is configured, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to:

configure the at least one UE with a criteria for selecting one of the SL mode 1 or the SL mode 2 for data transmission of the configured dual-mode SL LCHs and a corresponding SL BSR configuration.

3. The apparatus according to claim 1 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to adjust the network configuration according to the received SL buffer status report.

4. The apparatus according to claim 3 , wherein, to adjust the network configuration, wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus to at least one of:

allocate a dedicated resource for packet transmission of the dual-mode SL LCHs;

adjust the configuration for the resources assigned to the corresponding single-mode SL LCHs; or

modify the LCP configuration for the dual-mode SL LCHs or reconfiguring a dual-mode SL LCHs into a single-mode SL LCHs.

5. The apparatus according to claim 4 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to transmit the adjusted network configuration to the at least one UE.

6. The apparatus according to claim 1 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to configure a rule or criteria regarding how the dual-mode SL LCHs uses a configured resource.

7. The apparatus according to claim 6 , wherein, to configure the rule or criteria, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus to at least one of:

configure at least one of a maximum or minimum number of bits for the dual-mode SL LCHs to set as a limitation on usage of SL grant of mode 1 or to set as a limitation on usage of SL mode 2, wherein remaining bits are set to use for SL grant of the other operating mode;

configure a set of maximum or minimum number of bits, wherein the set corresponds to different mode 2 resource pool conditions; or

associate the number of bits of dual-mode SL LCHs that can use SL grant of mode 1 with a buffer size reported by the at least one UE in the SL BSR.

8. The apparatus according to claim 1 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to:

configure triggers or behaviors for the at least one UE to report SL buffer status on dual-mode SL LCHs, wherein the triggers or behaviors comprise information for how the dual-mode SL LCHs should include its buffer status into the BSR or when to send the SL BSR.

9. The apparatus according to claim 1 , wherein, to transmit the resource allocation, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to transmit a plurality of feasible configured modulation and coding schemes (MCSs) to be used for the assigned resource(s) for the at least one UE among single-mode and dual-mode SL LCHs.

10. The apparatus according to claim 1 , wherein, to transmit the resource allocation, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to provide, together with the resource allocation information, an information element indicating at least one of a LCP configuration or a restriction for the dual-mode SL LCHs to use the allocated mode 1 resource.

11. The apparatus according to claim 1 , wherein, to transmit the resource allocation, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to indicate, in the SL grant, a rule or criteria for how the dual-mode SL LCHs use the SL grant of mode 1.

12. An apparatus, comprising:

at least one processor; and

at least one memory comprising computer program code,

the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to;

receive a configuration of dual mode sidelink (SL) logical channels (LCHs) to enable simultaneous SL mode 1 and SL mode 2 transmission, the dual-mode SL LCHs being configured with two sets of logical channel prioritization (LCP) configurations;

wherein one of the LCP configurations is for mode 1 operation and another of LCP configurations is for mode 2 operation,

wherein the LCP configuration for mode 1 indicates how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode 1 resource, and

wherein the LCP configuration for mode 2 indicates a policy regarding how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode-2 resource;

transmit at least one SL buffer status report (BSR) optionally comprising buffer status for one or more configured dual-mode LCHs according to a network configuration; and

receive a SL mode 1 resource allocation message that can be applied for the dual-mode LCHs according to the network configuration.

13. The apparatus according to claim 12 , wherein, when the dual-mode SL LCHs is configured, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to receive a criteria or rule for selecting one of the SL mode 1 or the SL mode 2 for data transmission of the configured dual-mode SL LCHs and a corresponding SL BSR configuration.

14. The apparatus according to claim 12 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to receive an indication of triggers or events for configuring and sending a SL buffer status report (BSR).

15. The apparatus according to claim 14 , wherein, to receive the indication of triggers or events, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to receive an indication of events regarding when a dual-mode SL LCHs should report its buffer status in the BSR.

16. The apparatus according to claim 14 , wherein the events comprise at least one of:

a channel busy ratio of the SL mode 2 being above a threshold,

a data volume in the buffer being above a threshold,

a packet transmission experiences a large delay, or

a radio link failure (RLF) is experienced from using the SL mode 2.

17. The apparatus according to claim 12 , wherein, when SL grant of mode 1 is allocated, the resource allocation message comprises a plurality of feasible configured modulation and coding schemes (MCSs) to be used for assigned resources among single-mode and dual-mode SL LCHs.

18. The apparatus according to claim 12 , wherein, to receive the resource allocation, the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to receive, together with the resource allocation information, an information element indicating at least one of the LCP configuration and restriction for the dual-mode LCHs to use the allocated mode 1 resource.

19. The apparatus according to claim 12 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to, based on the received resource allocation message and local information at the apparatus, select a proper modulation and coding scheme (MCS) for the transmission and, based on the selected modulation and MCS, decide whether a dual-mode SL LCHs can multiplex with other single-mode SL LCHs into the allocated resource.

20. The apparatus according to claim 12 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to transmit one or more packets over the assigned mode-1 resource to a peer SL user equipment (UE).

21. The apparatus according to claim 20 , wherein, when a modulation and coding scheme (MCS) with high spectral efficiency has been selected, the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to transmit the packets over the mode-1 resource containing the data from the dual-mode SL LCHs.

22. The method according to claim 12 , wherein the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to:

receive adjusted reconfiguration information from the network; and

based on the received reconfiguration information, reconfigure the SL LCHs and perform the transmission accordingly.

23. A computer program embodied on a non-transitory computer readable medium, said computer program comprising program instructions which, when executed in hardware, cause the hardware to perform a method comprising:

receiving, at a SL user equipment (UE), an indication or configuration of dual mode sidelink (SL) logical channels (LCHs to enable simultaneous SL mode 1 and SL mode 2 transmission, the dual-mode SL LCHs being configured with two sets of logical channel prioritization (LCP) configurations;

wherein one of the LCP configurations is for mode 1 operation and another of LCP configurations is for mode 2 operation,

wherein the LCP configuration for mode 1 indicates how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode 1 resource, and

wherein the LCP configuration for mode 2 indicates a policy regarding how the data from the dual-mode SL LCHs should be multiplexed with the data from the other SL LCHs by using the mode-2 resource;

transmitting at least one SL buffer status report (BSR) optionally comprising buffer status for one or more configured dual-mode LCHs according to a network configuration; and

receiving a SL mode 1 resource allocation message that can be applied for the dual-mode LCHs according to the network configuration.

Assignments (1)

Continuity (2)

References Cited (19)