Use of Off Period of DRX for Direct Peer to Peer Communication in a Cell

• US 20110237231A1
• Filed: 09/05/2008
• Published: 09/29/2011
• Est. Priority Date: 09/05/2008
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Van Phan, Vinh, Horneman, Kari Veikko, Yu, Ling
• Granted Patent: US 9,661,683 B2
• Time in Patent Office: Days
• US Class Current: 455/414.1
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method and a device for data processing in a cellular network are provided including the step of scheduling data transmission between mobile terminals utilizing a DRX mode of the mobile terminals. Furthermore, a communication system is suggested including said device.

Claims

1. A method for data processing in a cellular network comprising the step of:

scheduling data transmission between mobile terminals utilizing a DRX mode of the mobile terminals.

2. The method according to claim 1, wherein the mobile terminals are paired device-to-device-capable mobile terminals.

3. The method according to claim 1, wherein configuration and/or signaling procedures are provided between each mobile terminal and a base station.

4. The method according to claim 1, wherein a base station schedules data transmissions between a source UE and a given UE during an OFF duration of a DRX cycle of both UEs.

5. The method according to claim 4, wherein scheduling is either a semi-static scheduling via persistent allocation and configuration provided by the base station or a dynamic scheduling.

6. The method according to claim 5, wherein in case of semi-static scheduling the base station reconfigures DRX parameters for the source UE and for the given UE to couple their ON-OFF patterns of the DRX cycle.

7. The method according to claim 6, wherein the source UE and the given UE are assigned with resources for at least one time interval of coupled OFF duration per DRX cycle for device-to-device communication purposes.

8. The method according to claim 4, wherein the base station informs the source UE and the given UE to enter OFF duration of the DRX cycle in order to start device-to-device data transmission.

9. The method according to claim 4, wherein the base station conveys a duration for a subsequent device-to-device scheduling interval and/or a starting time for the scheduling interval and/or an uplink scheduling information to the source UE and to the given UE.

10. The method according to claim 4, wherein the source UE and the given UE are configured to provide a predetermined time offset at the beginning of a scheduled device-to-device time interval.

11. The method according to claim 4, wherein the source UE and/or the given UE enter a power-saving mode if no actual device-to-device data transmission is needed.

12. The method according to claim 4, wherein the base station schedules data transmission between the source UE and the base station during an ON duration of the DRX cycle of the source UE.

13. A device comprising a and/or being associated with a processor unit and/or a hard-wired circuit and/or a logic device that is arranged such that the method according to claim 1 is executable thereon.

14. The device according to claim 13, wherein said device is a communication device, in particular a or being associated with a base station or a mobile terminal.

15. Communication system comprising the device according to claim 13.