Allocating and determining resources for a device-to-device link
An evolved Node B (eNB) for allocating resources for a device-to-device (D2D) link between User Equipments (UEs) is described. The eNB includes a processor and instructions stored in memory that is in electronic communication with the processor. The eNB allocates resources for a D2D signal. The D2D signal is transmitted or received by the UE in uplink spectrum in a case of Frequency Division Duplexing (FDD) or in uplink subframes in a case of Time Division Duplexing (TDD).
1. An evolved Node B (eNB) for allocating resources for a device-to-device (D2D) transmission or reception between User Equipments (UEs), comprising:
a processor;
memory in electronic communication with the processor;
instructions stored in the memory, the instructions being executable to:
allocate resources for a D2D signal by Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), wherein Cyclic Redundancy Check (CRC) of the DCI is scrambled by a different sequence for a D2D link than a Cell Radio Network Temporary Identifier (C-RNTI) for a normal link and the D2D signal is transmitted or received by the UE and the resources for the D2D signal are allocated by the DCI for a certain period of time wherein the period is semi-statically configured.
2. The eNB of claim 1 , wherein the D2D signal is transmitted or received on a Physical Uplink Shared Channel (PUSCH).
3. The eNB of claim 1 , wherein the UE transmits the D2D signal to or receives the D2D signal from another UE that communicates with the eNB.
4. The eNB of claim 1 , wherein the UE transmits the D2D signal to or receives the D2D signal from another UE that communicates with another eNB.
5. A User Equipment (UE) for determining resources for a device-to-device (D2D) transmission, comprising:
a processor;
memory in electronic communication with the processor;
instructions stored in the memory, the instructions being executable to:
receive resource allocation for a D2D signal by Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), wherein Cyclic Redundancy Check (CRC) of the DCI is scrambled by a different sequence for a D2D link than a Cell Radio Network Temporary Identifier (C-RNTI) for a normal link and the resources for the D2D signal are allocated by the DCI for a certain period of time wherein the period is semi-statically configured.
6. The UE of claim 5 , wherein the D2D signal is transmitted on a Physical Uplink Shared Channel (PUSCH).
7. The UE of claim 5 , wherein the instructions are further executable to communicate with an evolved Node B (eNB).
8. The UE of claim 7 , wherein the UE transmits the D2D signal to UE that communicates with the same eNB.
9. The UE of claim 7 , wherein the UE transmits the D2D signal to another UE that communicates with another eNB.
10. A method for allocating resources for a device-to-device (D2D) transmission or reception between User Equipments (UEs) by an evolved Node B (eNB), comprising:
allocating resources for a D2D signal by Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), wherein Cyclic Redundancy Check (CRC) of the DCI is scrambled by a different sequence for a D2D link than a Cell Radio Network Temporary Identifier (C-RNTI) for a normal link and the resources for the D2D signal are allocated by the DCI for a certain period of time wherein the period is semi-statically configured.
11. The method of claim 10 , wherein the D2D signal is transmitted or received on a Physical Uplink Shared Channel (PUSCH).
12. The method of claim 10 , wherein the UE transmits the D2D signal to or receives the D2D signal from another UE that communicates with the eNB.
13. The method of claim 10 , wherein the UE transmits the D2D signal to or receives the D2D signal from another UE that communicates with another eNB.
14. A method for determining resources for a device-to-device (D2D) transmission by a User Equipment (UE), comprising:
receiving resource allocation for a D2D signal by Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), wherein Cyclic Redundancy Check (CRC) of the DCI is scrambled by a different sequence for a D2D link than a Cell Radio Network Temporary Identifier (C-RNTI) for a normal link and the resources for the D2D signal are allocated by the DCI for a certain period of time wherein the period is semi-statically configured.
15. The method of claim 14 , wherein the D2D signal is transmitted on a Physical Uplink Shared Channel (PUSCH).
16. The method of claim 14 , further comprising communicating with an evolved Node B (eNB).
17. The method of claim 16 , wherein the UE transmits the D2D signal to another UE that communicates with the same eNB.
18. The method of claim 16 , wherein the UE transmits the D2D signal to another UE that communicates with another eNB.