EP2976923B1

5G,4G

Title

DETERMINISTIC UE BEHAVIOUR FOR CSI/SRS REPORTING DURING DRX

Application Number:

EP20130801555

Publication Date:

03-05-2017

Current Assignee:

Family ID:

Application Date:

04-12-2013

Declaring Company:

Publication Country:

US

Priority Date:

20-03-2013

Title

DETERMINISTIC UE BEHAVIOUR FOR CSI/SRS REPORTING DURING DRX

Application Number:

EP20130801555

Family ID:

Publication Country:

US

Publication Date:

03-05-2017

Application Date:

04-12-2013

Priority Date:

20-03-2013

Current Assignee:

Declaring Company:

Abstract  Abstract

The invention relates to a method for transmitting a periodic channel quality report (CSI) and/or a sounding reference symbol (SRS) from a UE to an e Node B. To avoid double decoding at the e Node B in transient phases a deterministic behavior of the UE is defined by the invention according to which the e Node B can unambiguously determine whether the UE will transmit the CSI/SRS or not. According to one embodiment the UL grants and/or DL assignments received until and including subframe N-4 only are considered; UL grants and/or DL assignments received by the UE after subframe N-4 are discarded for the determination. Additionally DRX-related timers at subframe N-4 are considered for the determination. In a second embodiment DRX MAC control elements from the e Node B instructing the UE to enter DRX i.e. become Non- Active are only considered for the determination if they are received before subframe N-4 i.e. until and including subframe N-(4+k).

The invention relates to a method for transmitting a periodic channel quality report (CSI) and/or a sounding reference symbol (SRS) from a UE to an e Node B. To avoid double decoding at the e Node B in transient phases a deterministic behavior of the UE is defined by the invention according to which the e Node B can unambiguously determine whether the UE will transmit the CSI/SRS or not. According to one embodiment the UL grants and/or DL assignments received until and including subframe N-4 only are considered; UL grants and/or DL assignments received by the UE after subframe N-4 are discarded for the determination. Additionally DRX-related timers at subframe N-4 are considered for the determination. In a second embodiment DRX MAC control elements from the e Node B instructing the UE to enter DRX i.e. become Non- Active are only considered for the determination if they are received before subframe N-4 i.e. until and including subframe N-(4+k).

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.