User Equipment Enhancement for Diverse Data Application

• US 20130294307A1
• Filed: 04/26/2013
• Published: 11/07/2013
• Est. Priority Date: 05/02/2012
• Status: Active Grant

• Current Assignee: HFI Innovation, Inc. (MediaTek, Inc.)
• Original Assignee: MediaTek, Inc.
• Inventors: Johansson, Per Johan Mikael, Hsu, Chia-Chun
• Granted Patent: US 10,111,168 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods for UE enhancements for diverse data application are disclosed. In one embodiment of the invention, the UE applies a discontinuous reception (DRX) or discontinuous transmission (DTX) operation in a wireless network. The UE detects one or more predefined traffic conditions. Based on the detected traffic conditions, the UE either stays in the long DRX state longer or extends the short DRX cycle timer. In other embodiments of the invention, the UE configures an idle mode trigger condition. The UE detects one or more predefined traffic condition. Based on the detected traffic conditions, the UE may restart the inactivity timer. In other embodiments of the invention, the UE detects one or more predefined traffic conditions. The UE adaptively adjusts RLF triggering parameters based on the detected traffic conditions.

Claims

1. A method, comprising:

applying a discontinuous reception (DRX) and/or discontinuous transmission (DTX) operation by a user equipment (UE) in a wireless network, wherein the UE is either in a long DRX state or in a short DRX state;

sending or receiving a data transmission;

detecting one or more traffic conditions; and

performing a DRX transition action based on the traffic conditions.

2. The method of claim 1, wherein the DRX transition action is to transit from the long DRX state to the short DRX state wherein the traffic condition comprises at least one of:

a data volume of the data transmission or buffered data for transmission exceeds a predefined threshold, the data transmission is for one of predefined logical channels or one of a predefined logical channel group, the data transmission is a predefined specific uplink or downlink transmission, and the UE or the logical channel is in a non-power-saving state.

3. The method of claim 1, wherein the DRX transition action is to stay in the long DRX state when the traffic condition is background traffic or low QoS traffic.

4. The method of claim 1, wherein the DRX transition action is to extend the duration in short DRX when detecting at least one of the predefined traffic conditions:

the data transmission or buffered data for transmission exceeds predefined threshold, the data transmission is for one of predefined logical channels or one of a predefined logical channel group, the data transmission is a predefined specific uplink or downlink transmission, and the UE or the logical channel is in a non-power-saving state.

5. The method in claim 1, wherein the DRX transition action is to dynamically adjust the UL transmission occasion period that applies to PUCCH transmission, RACH transmission, or contention based UL transmissions.

6. The method of claim 5, wherein the UL transmission occasion period is adjusted to a longer period unless detecting at least one of the traffic conditions:

the data transmission is larger than a predefined threshold volume, the data transmission is for one of predefined logical channels or one of a predefined logical channel group, and the UE or the logical channel is in a non-power-saving state.

7. The method of claim 1, further comprising:

sending one or more traffic condition synchronization information by the UE to the wireless network by either MAC control elements or by RRC signaling.

8. The method of claim 7, wherein the traffic condition synchronization information comprises at least one of:

a DRX state, a UE power-saving or non-power-saving state, a background traffic type, a low QoS traffic type, and a short DRX inactivity timer.

9. A method, comprising:

configuring a user equipment (UE) idle mode trigger condition by a UE in a wireless network;

detecting one or more predefined traffic conditions by the UE;

performing a UE idle mode transition action based on the traffic condition; and

transitioning into idle mode when the idle mode trigger condition is met.

10. The method of claim 9, wherein the idle mode trigger condition is expiration of a UE internal timer, and wherein the idle mode transition action is to start/restart a UE internal timer when a preconfigured event known to both the UE and the network occurs.

11. The method of claim 10, wherein the preconfigured event is a transmission or reception of data conditional to optional secondary conditions which is one or more of:

a volume of the data transmission is above a predefined threshold, the data transmission is for specific predefined logical channels or radio bearers, the data transmission is a predefined specific uplink or downlink signaling transmission, and the UE or the logical channel is in a non-power-saving state.

12. The method of claim 10, wherein the idle mode transition action additionally involves to conditionally adjust the UE internal timer start value based on a condition which is one or more of:

a volume of the data transmission is above a predefined threshold, the data transmission is for specific predefined logical channels or radio bearers, the data transmission is a predefined specific uplink or downlink signaling transmission, and the UE or the logical channel is in a non-power-saving state.

13. The method of claim 10, further comprising:

sending one or more traffic condition synchronization information by the UE to the wireless network, wherein the traffic condition synchronization information comprises;

a UE power-saving or non-power-saving state, a background traffic type, a low QoS traffic type, and the UE internal timer value.

14. The method of claim 9, wherein the idle mode transition action is sending one or more idle mode assistance information to the wireless network, and wherein the idle mode trigger condition is receiving a command message from the network, and wherein the idle mode assistance information includes:

a background traffic type, a low QoS traffic type, a UE power-saving or non-power-saving state, a UE dormant or awake state, and recent history of the traffic condition.

15. The method of claim 14, wherein the idle mode assistance information is sent in a measurement report transmission to the network or is sent in a data transmission from the UE to the network.

16. A method, comprising:

establishing a radio resource control (RRC) connection by a user equipment (UE) in a wireless communication network;

detecting one or more predefined traffic conditions;

detecting one or more radio link problems of the RRC connection associated with a Radio Link Failure (RLF) detection; and

adaptively applying adjusted RLF triggering parameters based on the predefined traffic conditions.

17. The method of claim 16, wherein the predefined traffic condition includes at least one of:

DRX states, UE non-power-saving or power-saving state, and wherein the DRX states include;

long DRX, short DRX, and DRX inactivity timer running.

18. The method of claim 16, wherein RLF triggering parameters include RLF timers, and L3 filter for RLF triggering.

19. The method of claim 16, wherein the RLF triggering is delayed when detecting at least one of the predefined traffic conditions, including:

the UE is in a non-active state, the UE is in a non-power-saving state.