Reduction of unnecessary downlink control channel reception and decoding

Patent metadata

Field	Value
Publication number	US-10764771-B2
Application number	US-200913128616-A
Country	US
Kind code	B2
Filing date	Nov 9, 2009
Priority date	Nov 10, 2008
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A method for channel signaling is described. The method includes determining (e.g., by a UE) whether at least one DL subframe is a valid reference resource. If the at least one DL subframe is not a valid reference resource, reporting measurements of a DL channel measured during the at least one DL subframe is inhibited. The method may include determining (e.g., by an eNB) whether reporting of the at least one DL subframe of a DL channel is required. If reporting is not required, a message configured to cause the at least one UE to inhibit reporting measurements of the DL channel (e.g., CQI measurements) measured during the at least one DL subframe is sent to the UE. Determining whether the at least one downlink subframe is a valid reference resource is based at least in part on the message. Apparatus and computer readable media are also described.

First claim

The invention claimed is:

1. A method comprising:
receiving a message regarding at least one downlink subframe;
determining, based at least in part on the received message, whether the at least one downlink subframe is a valid channel quality indicator reference resource; and
in response to determining that the at least one downlink subframe is not a valid channel quality indicator reference resource, inhibiting reporting measurements of a downlink channel measured during the at least one downlink subframe,
wherein the message comprises SystemInformationBlockType2.

2. The method of claim 1 , further comprising monitoring whether a subframe of the at least one downlink subframe comprises at least one of: a downlink assignment, or an uplink grant.

3. The method of claim 1 , further comprising inhibiting performing channel quality measurements of the downlink channel during the at least one downlink subframe.

4. The method of claim 1 , further comprising deactivating at least one of: a receiver, or base band circuitry during the at least one downlink subframe.

5. The method of claim 1 , where the message comprises an indication that the at least one downlink subframe is at least one of: a multicast/broadcast single frequency network subframe; a blank subframe; or a subframe during a measurement gap.

6. The method of claim 1 , where the message comprises an assignment of a channel quality indicator reporting mode for at least a duration of the at least one downlink subframe.

7. The method of claim 6 , where the channel quality indicator reporting mode is an inactive channel quality indicator reporting mode.

8. The method of claim 6 , where the channel quality indicator reporting mode is one of: a periodic channel quality indicator reporting mode; and an aperiodic channel quality indicator reporting mode.

9. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to:
receive a message regarding at least one downlink subframe;
determine, based at least in part on the received message, whether the at least one downlink subframe is a valid channel quality indicator reference resource; and
in response to determining that the at least one downlink subframe is not a valid channel quality indicator reference resource, inhibit reporting measurements of a downlink channel measured during the at least one downlink subframe,
wherein the message comprises SystemInformationBlockType2.

10. The apparatus of claim 9 , where the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to monitor whether a subframe of the at least one downlink subframe comprises at least one of: a downlink assignment, or an uplink grant.

11. The apparatus of claim 9 , where the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to inhibit performing channel quality measurements of the downlink channel during the at least one downlink subframe.

12. The apparatus of claim 9 , where the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to deactivate at least one of: a receiver, or base band circuitry during the at least one downlink subframe.

13. The apparatus of claim 9 , where the message comprises an indication that the at least one downlink subframe is at least one of: a multicast/broadcast single frequency network subframe; a blank subframe; or a subframe during a measurement gap.

14. The apparatus of claim 9 , where the message comprises an assignment of a channel quality indicator reporting mode for at least a duration of the at least one downlink subframe.

15. The apparatus of claim 14 , where the channel quality indicator reporting mode is an inactive channel quality indicator reporting mode.

16. The apparatus of claim 14 , where the channel quality indicator reporting mode is one of:
a periodic channel quality indicator reporting mode; and
an aperiodic channel quality indicator reporting mode.

17. A non-transitory computer readable medium tangibly encoded with a computer program executable by a processor to perform actions comprising:
receiving a message regarding at least one downlink subframe;
determining, based at least in part on the received message, whether the at least one downlink subframe is a valid channel quality indicator reference resource; and
in response to determining that the at least one downlink subframe is not a valid channel quality indicator reference resource, inhibiting reporting measurements of a downlink channel measured during the at least one downlink subframe,
wherein the message comprises SystemInformationBlockType2.

Assignees

• Koskinen Henri Markus
• Ojala Jussi Kustaa
• Lunttila Timo Erkki
• Nokia Technologies Oy

Inventors

• Koskinen Henri Markus
• Ojala Jussi Kustaa
• Lunttila Timo Erkki

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L1/0027

  Scheduling of signalling, e.g. occurrence thereof · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title