Communication of power consumption configurations during handover

• US 9,515,689 B2
• Filed: 06/28/2013
• Issued: 12/06/2016
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Zhu, Jing, Jha, Satish, Vannithamby, Rath, Koc, Ali, Gupta, Maruti
• Primary Examiner(s): Zhu, Alvin
• Application Number:
  US14/125,481
• Publication Number:
  US 20150195800A1
• Time in Patent Office: 1,257 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/12 Neutralising, balancing, or compensation arrangements
• CPC Class Codes: H04B 1/3827 Portable transceivers
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/03305 Joint sequence estimation and interference removal joint detection of several desired signals H04L25/03331
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 : Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 : Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0058 : Allocation criteria
• CPC Class Codes: H04L 5/0092 : Indication of how the channel is divided
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/10 : Reselecting an access point controller
• CPC Class Codes: H04W 40/16 : based on interference
• CPC Class Codes: H04W 52/0261 : managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/40 : during macro-diversity or soft handoff
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 : for groups of terminals or users
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/52 : based on load
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/566 : of the information or information source or recipient
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 92/18 : between terminal devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for communicating user equipment (UE) power consumption configurations is disclosed. One method can include selecting, at the UE, a Power Preference Indication (PPI) state of a power consumption configuration of the UE. The UE can receive, from a source evolved node B (eNB), instructions to begin a PPI Prohibit Event Interval during a handover from the source eNB to a target eNB, wherein the UE cannot send the PPI state to the source eNB during the PPI Prohibit Event Interval. The UE can send the PPI state to the target eNB after the PPI Prohibit Event Interval ends and handover has either successfully completed or failed from the source eNB to the target eNB.

Claims

1. A user equipment (UE) operable to communicate a UE power consumption configuration, the UE having computer circuitry configured to:

determine, at the UE, Power Preference Indication (PPI) information, wherein the PPI information includes a preferred power consumption configuration of the UE;

send the PPI information to a source evolved node B (eNB);

receive instructions, from the source eNB, to perform a handover from the source eNB to the target eNB;

receive instructions, from the source eNB, to begin a PPI Prohibit Event Interval during the handover from the source eNB to a target eNB, wherein the UE cannot send the PPI information to the source eNB during the PPI Prohibit Event Interval;

receive, at the UE, the instructions to begin the PPI Prohibit Event Interval before the source eNB sends a handover request message to the target eNB; and

send, from the UE, the PPI information to the target eNB that is configured to accept the PPI information, wherein the PPI information contains a most recent preferred power consumption configuration of the UE regardless of when the UE last sent PPI information to the source eNB.

2. The computer circuitry of claim 1, further configured to send the PPI information to the target eNB using a Radio Resource Control (RRC) Connection Reconfiguration Complete message.

3. The computer circuitry of claim 1, further configured to send the same PPI information to the target eNB as the PPI information sent to the source eNB.

4. The computer circuitry of claim 1, further configured to send PPI information to the target eNB that is different than the PPI information sent to the source eNB in response to the PPI information being updated during a handover execution phase.

5. The computer circuitry of claim 1, further configured to send PPI information to the source eNB and the target eNB, wherein the preferred power consumption configuration of PPI=0 indicates a default power configuration and the preferred power consumption configuration of PPI=1 indicates a lower power consumption configuration.

6. A source evolved node B (eNB) operable to support communication of a power consumption configuration, the source eNB having computer circuitry configured to:

receive Power Preference Indication (PPI) information from a user equipment (UE), wherein the PPI information includes a preferred power consumption configuration of the UE;

send instructions to the UE to begin a PPI Prohibit Event Interval during a handover from the source eNB to a target eNB, wherein the UE cannot send the PPI information to the source eNB during the PPI Prohibit Event Interval;

send, to the UE, the instructions to begin the PPI Prohibit Event Interval before a handover request message is sent from the source eNB to the target eNB;

initiate the handover, from the source eNB, to a target eNB by sending the handover request message to the target eNB; and

send a sequence number (SN) status transfer message to the target eNB during a handover execution phase, wherein the SN status transfer message includes the PPI information of the UE.

7. The computer circuitry of claim 6, further configured to receive the PPI information from the UE based on a UE triggering algorithm.

8. The computer circuitry of claim 6, further configured to send a most recent preferred power consumption configuration of the UE along with the SN status transfer message to the target eNB.

9. A method of communicating user equipment (UE) power consumption configurations, the method comprising:

selecting, at the UE, a Power Preference Indication (PPI) state of a power consumption configuration of the UE;

receiving, from a source evolved node B (eNB), instructions to begin a PPI Prohibit Event Interval during a handover from the source eNB to a target eNB, wherein the UE cannot send the PPI state to the source eNB during the PPI Prohibit Event Interval;

receiving, at the UE, the instructions to begin the PPI Prohibit Event Interval before the source eNB sends a handover request message to the target eNB; and

sending, from the UE, the PPI state to the target eNB after the PPI Prohibit Event Interval ends and handover has either successfully completed or failed from the source eNB to the target eNB.

10. The method of claim 9, further comprising receiving, from the source eNB, a Medium Access Control (MAC) message or a Radio Resource Control (RRC) message that indicates a start of the PPI Prohibit Event Interval.

11. The method of claim 9, further comprising sending the PPI state to the target eNB, from the UE, after the UE sends a Radio Resource Control (RRC) Connection Reconfiguration Complete message to the target eNB.

12. The method of claim 11, further comprising determining that the PPI Prohibit Event Interval ends when the UE sends the RRC Connection Reconfiguration Complete message to the target eNB.

13. The method of claim 9, further comprising determining that the PPI Prohibit Event Interval ends when the UE sends a Radio Resource Control (RRC) Connection Re-Establishment message to the source eNB.

14. The method of claim 13, further comprising sending the PPI state to the source eNB, from the UE, after the UE sends the RRC Connection Re-Establishment message to the source eNB in response to handover not being established between the source eNB and the target eNB.

15. The method of claim 9, further comprising determining that the PPI Prohibit Event Interval ends after receiving a message, from the source eNB, indicating that the PPI Prohibit Event Interval has terminated because handover could not be established between the source eNB and the target eNB.

16. The method of claim 9, further comprising sending the PPI state to the target eNB, wherein the power consumption configuration of PPI=0 indicates a default power configuration and the power consumption configuration of PPI=1 indicates a lower power consumption configuration.

17. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method of claim 9.

18. A wireless device configured to communicate power consumption configurations, comprising:

a determination module configured to determine, at a user equipment (UE), a Power Preference Indication (PPI) state of a preferred power consumption configuration of the UE;

a receiving module configured to receive, from a source evolved node B (eNB), a message to begin a PPI Prohibit Event Interval during a handover from the source eNB to a target eNB, wherein the UE cannot send the PPI state to the source eNB during the PPI Prohibit Event Interval; and

a sending module configured to send, from the UE, the PPI state to the target eNB after the PPI Prohibit Event Interval ends and based on a PPI triggering algorithm that triggers the UE to send the PPI state to the target eNB,

wherein the receiving module is further configured to receive the message from the source eNB to begin the PPI Prohibit Event Interval before the source eNB sends a handover request message to the target eNB.

19. The wireless device of claim 18, wherein the sending module is further configured to send the PPI state to the target eNB after the UE sends a Radio Resource Control (RRC) Connection Reconfiguration Complete message to the target eNB.

20. The wireless device of claim 18, wherein the sending module is further configured to send the PPI state to the source eNB after the UE sends a Radio Resource Control (RRC) Connection Re-Establishment message to the source eNB based on handover between the source eNB and the target eNB not being established.

21. The wireless device of claim 18, wherein the sending module is further configured to send the PPI state to the source eNB after receiving a message from the source eNB indicating that the PPI Prohibit Event Interval has ended in response to handover not being established between the source eNB and the target eNB.

22. The wireless device of claim 18, wherein the sending module is further configured to send the PPI state to the target eNB using a Radio Resource Control (RRC) Connection Reconfiguration Complete message.