Discontinuous reception in a wireless device for in-device coexistence

• US 9,992,742 B2
• Filed: 04/11/2012
• Issued: 06/05/2018
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Zhang, Yujian, Fong, Mo-Han
• Primary Examiner(s): Abad, Jackie Zuniga
• Application Number:
  US13/997,223
• Publication Number:
  US 20150071179A1
• Time in Patent Office: 2,246 Days
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0613 using simultaneous transmission H04B7/0686 takes precedence
• CPC Class Codes: H04B 7/0615 of weighted versions of same signal
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 45/245 Link aggregation, e.g. trunking
• CPC Class Codes: H04L 47/41 by acting on aggregated flows or links
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04W 28/10 Flow control between communication endpoints
• CPC Class Codes: H04W 36/0007 for multicast or broadcast services, e.g. MBMS multicast or broadcast application services H04W4/06; resource management for broadcast services H04W72/30; connection management for selective distribution or broadcast H04W76/40
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 52/0222 in packet switched networks
• CPC Class Codes: H04W 52/0235 : where the received signal is a power saving command
• CPC Class Codes: H04W 52/04 : TPC
• CPC Class Codes: H04W 52/146 : Uplink power control
• CPC Class Codes: H04W 52/244 : Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
• CPC Class Codes: H04W 52/365 : Power headroom reporting
• CPC Class Codes: H04W 52/54 : Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1215 : for collaboration of different radio technologies
• 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 72/27 : between access points
• CPC Class Codes: H04W 72/30 : Resource management for broadcast services
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 76/34 : Selective release of ongoing connections
• CPC Class Codes: H04W 76/40 : for selective distribution or broadcast
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Technology for reducing coexistence interference in a multi-radio wireless device is disclosed. In one method, a determination is made if coexistence interference is occurring in the multi-radio device. The multi-radio device is then configured to not monitor physical downlink control channels for pending uplink transmissions in a wireless wide area network (WWAN) transceiver in the multi-radio device that occur during an unscheduled period of discontinuous reception (DRX).

Claims

1. A method for reducing coexistence interference in a multi-radio wireless device, comprising:

determining the coexistence interference is occurring in the multi-radio device, wherein the multi-radio device includes a wireless wide area network (WWAN) transceiver that operates using discontinuous reception (DRX);

receiving a message from an eNodeB in a DRX configuration information element (IE) using radio resource control (RRC) signaling, wherein the message includes a Boolean indicating whether the PDCCHs of the WWAN transceiver in the multi-radio device are being monitored for the pending uplink retransmissions during the unscheduled period of the DRX;

configuring the multi-radio device to not monitor physical downlink control channel (PDCCHs) of the WWAN transceiver in the multi-radio device during an unscheduled period of discontinuous reception (DRX) for pending uplink retransmissions, wherein the Boolean in the DRX configuration IE is used to enable or disable monitoring of the PDCCH of the WWAN transceiver for pending uplink retransmissions during the unscheduled period; and

scheduling low power transceivers in the multi-radio device to receive during periods corresponding with PDCCH subframes of the WWAN transceiver to reduce coexistence interference between the low power transceivers and the WWAN transceiver.

2. The method of claim 1, further comprising configuring the multi-radio device to not monitor the PDCCHs of the WWAN transceiver during PDCCH subframes, wherein the WWAN transceiver is configured to operate based on a cellular type standard.

3. The method of claim 1, further comprising scheduling the low power transceivers to receive during periods corresponding with the PDCCH subframes, wherein the low power transceivers are configured to communicate in an industrial, scientific, and medical (ISM) band.

4. A multi-radio wireless device configured for discontinuous reception, comprising:

a discontinuous reception (DRX) module configured to receive discontinuous reception configuration information elements (IE) from an eNodeB, wherein the IE includes a Boolean indicating whether the PDCCHs of a WWAN transceiver in the multi-radio device are monitored for the pending uplink retransmissions during the unscheduled period of the DRX; and

a process active indicator module configured to identify when to monitor physical downlink control channel (PDCCHs) of a wireless wide area network (WWAN) transceiver in a multi-radio device for pending uplink retransmissions during an unscheduled period of discontinuous reception (DRX);

at least one low power transceiver that is configured to receive when the WWAN transceiver in the multi-radio device does not monitor the PDCCHs for pending uplink retransmissions during the unscheduled period of the DRX, wherein the Boolean in the DRX configuration IE is used to enable or disable monitoring of the PDCCH of the WWAN transceiver for pending uplink retransmissions during the unscheduled period.

5. The multi-radio wireless device of claim 4, wherein the WWAN transceiver is configured to operate based on a cellular type standard.

6. The multi-radio wireless device of claim 4, wherein at least one of the at least one low power transceivers is configured to operate in an industrial, scientific, and medical (ISM) band.

7. The multi-radio wireless device of claim 4, wherein the DRX IE is received via radio resource communication (RRC) signaling.