Simultaneous scheduling request transmission in dual connectivity

Patent metadata

Field	Value
Publication number	US-2015312930-A1
Application number	US-201514696587-A
Country	US
Kind code	A1
Filing date	Apr 27, 2015
Priority date	Apr 28, 2014
Publication date	Oct 29, 2015
Grant date	—

Abstract

Briefly, in accordance with one or more embodiments, an apparatus may be configured to receive a first scheduling request transmission for a first cell group, and a second scheduling request transmission for a second cell group, determine one of the first scheduling request and the second scheduling request to have a higher priority and another one of the first scheduling request and the second scheduling request to have a lower priority, and process the scheduling request having a higher priority without processing the scheduling request having a lower priority. An apparatus may be configured to combine a configuration of a first scheduling request for a first cell group and a second configuration of a second scheduling request for a secondary cell group in a system radio bearer, and transmit the SRB to a user equipment to process the first scheduling request and the second scheduling request.

First claim

What is claimed is:

1 . An apparatus to handle simultaneous scheduling request transmissions, comprising:
a transceiver; and a processor coupled to the transceiver, and memory coupled to the processor, wherein instructions in the memory configure the processor to:
receive a first scheduling request transmission for a first cell group, and a second scheduling request transmission for a second cell group;
determine one of the first scheduling request and the second scheduling request to have a higher priority and another one of the first scheduling request and the second scheduling request to have a lower priority; and
process the scheduling request having a higher priority without processing the scheduling request having a lower priority.

2 . The apparatus equipment as claimed in claim 1 , wherein instructions in the memory further configure the processor to assign a higher priority to an earlier received scheduling request, and a lower priority to a later received scheduling request.

3 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to assign a higher priority to a scheduling request received from a master cell group, and a lower priority to a scheduling request received from secondary cell group.

4 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to delay processing of the scheduling request having a lower priority to a next available scheduling request resource.

5 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to:
drop the scheduling request transmission having a lower priority; and indicate to a media access control (MAC) layer that the scheduling request transmission having a lower priority has been dropped.

6 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to signal on a physical uplink control channel (PUCCH) that a scheduling request is being processed.

7 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to:
drop a scheduling request from a secondary cell group currently being processed if a scheduling request transmission from a master cell group is received; and process the scheduling request for the master cell group.

8 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to:
provide a scheduling request prohibit timer in a media access control (MAC) layer, wherein the scheduling request prohibit timer is used for both a master cell group and a secondary cell group; and prevent a physical (PHY) layer from signaling a scheduling request on a physical uplink control channel (PUCCH) for a later received scheduling request.

9 . The apparatus as claimed in claim 1 , wherein instructions in the memory further configure the processor to:
provide a first scheduling request prohibit timer for a master cell group in a media access control (MAC) layer; provide a second scheduling request prohibit timer for a secondary cell group in the MAC layer; and delay processing of a later received scheduling request for a first one of the master cell group and the secondary cell group to a next scheduling request if there is any ongoing scheduling request being processed for another one of the master cell group and the secondary cell group.

10 . The apparatus as claimed in claim 1 wherein the transceiver, the processor, and the memory comprise a modem.

11 . The apparatus as claimed in claim 1 , wherein the transceiver, the processor, and the memory comprise a user equipment.

12 . An apparatus to configure simultaneous scheduling request transmissions, comprising:
a transceiver; and a processor coupled to the transceiver, and memory coupled to the processor, wherein instructions in the memory configure the processor to:
combine a configuration of a first scheduling request for a first cell group and a second configuration of a second scheduling request for a secondary cell group in a system radio bearer (SRB); and
transmit the SRB to a user equipment (UE) to process the first scheduling request and the second scheduling request.

13 . The apparatus as claimed in claim 12 , wherein the first scheduling request is configured by an evolved Node B for the first cell group, and the second scheduling request is configured by a secondary evolved Node B (SeNB) of the secondary cell group.

14 . The apparatus as claimed in claim 12 , wherein the first scheduling request is configured by an evolved Node for the first cell group, and the second scheduling request is configured by the evolved Node B for a secondary evolved Node B (SeNB) of the secondary cell group.

15 . The apparatus as claimed in claim 12 , wherein the first scheduling request and the second scheduling request are configured to not overlap each other.

16 . The apparatus as claimed in claim 12 , wherein the UE may determine which of the first scheduling request and the second scheduling request to process if the first scheduling request and the second scheduling request are at least partially overlapping or fully overlapping.

17 . The apparatus as claimed in claim 12 wherein the transceiver, the processor, and the memory comprise a modem.

18 . The apparatus as claimed in claim 12 , wherein the transceiver, the processor, and the memory comprise a user equipment.

19 . An article of manufacture comprising a non-transitory medium having instructions stored thereon that, if executed, result in:
receiving a first scheduling request transmission for a first cell group, and a second scheduling request transmission for a second cell group; determining one of the first scheduling request and the second scheduling request to have a higher priority and another one of the first scheduling request and the second scheduling request to have a lower priority; and processing the scheduling request having a higher priority without processing the scheduling request having a lower priority.

20 . The article of manufacture as claimed in claim 19 , wherein said determining comprises assigning a higher priority to an earlier received scheduling request, and a lower priority to a later received scheduling request.

21 . The article of manufacture as claimed in claim 19 , wherein said determining comprises assigning a higher priority to a scheduling request received from a master cell group, and a lower priority to a scheduling request received from secondary cell group.

22 . The article of manufacture as claimed in claim 19 , wherein the instructions, if executed, further result in comprising delaying processing of the scheduling request having a lower priority to a next available scheduling request resource.

23 . The article of manufacture as claimed in claim 19 , wherein the instructions, if executed, further result in:
dropping the scheduling request transmission having a lower priority; and indicating to a media access control (MAC) layer that the scheduling request transmission having a lower priority has been dropped.

24 . The article of manufacture as claimed in claim 19 , wherein the instructions, if executed, further result in signaling on a physical uplink control channel (PUCCH) that a scheduling request is being processed.

25 . The article of manufacture as claimed

Assignees

• Intel Ip Corp

Inventors

• Han Seunghee
• Zhang Yujian
• He Hong

Classifications

• H04W72/566 Primary

  of the information or information source or recipient · CPC title

• H04W76/15 Primary

  Setup of multiple wireless link connections · CPC title

• H04W72/21

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

• H04W72/1247 Primary

  Electricity · mapped topic

• H04W72/1284

  Electricity · mapped topic