Technique for uplink data processing

Patent metadata

Field	Value
Publication number	US-9591625-B2
Application number	US-201214413865-A
Country	US
Kind code	B2
Filing date	Jul 11, 2012
Priority date	Jul 11, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

A technique for allocating a uplink data volume 504 to uplink data pending for transmission in a telecommunications device is provided. As to a method aspect of the technique, a grant of the uplink data volume is received. A portion 502 of the granted uplink data volume is reserved for transmission of a buffer status report, which is to be provided by a Data Link layer 300 of the telecommunications device. A size of the buffer status report depends on a number of channels for which uplink data is pending. If an unreserved portion 503 of the granted uplink data volume is not sufficiently sized for the pending uplink data, the unreserved portion and at least a part of the reserved portion are allocated to at least a portion of the pending uplink data when the allocation corresponds to a reduction of a number of channels for which uplink data is pending so that the buffer status report is at least reduced in size.

First claim

The invention claimed is:

1. A method, in a telecommunications device, of allocating an uplink data volume to uplink data pending for transmission, the method comprising:
receiving a grant of the uplink data volume;
reserving a portion of the granted uplink data volume for transmission of a buffer status report of a Data Link layer of the telecommunications device, wherein a size of the buffer status report depends on a number of channels for which uplink data is pending;
if an unreserved portion of the granted uplink data volume is sufficiently sized for the pending uplink data, allocating the unreserved portion to the pending uplink data;
if the unreserved portion of the granted uplink data volume is not sufficiently sized for the pending uplink data, allocating the unreserved portion and at least a part of the reserved portion to at least a portion of the pending uplink data when the allocation corresponds to a reduction of the number of channels for which uplink data is pending so that the buffer status report is at least one of reduced in size and avoided;
wherein the reserved portion is reserved for the size of the buffer status report depending on a number M of channels for which uplink data is pending;
wherein the unreserved portion and the part of the reserved portion are allocated to all the uplink data pending for N channels of the M channels, wherein N≦M;
wherein the size of the buffer status report is reduced or the buffer status report is avoided as the number of channels for which uplink data is pending is decreased to M−N by the allocation.

2. The method of claim 1 , wherein the unreserved portion is not sufficiently sized for the uplink data pending for the N channels.

3. The method of claim 1 , wherein the reserved portion includes an unallocated part which does not overlap the allocated part and is sufficiently sized for the reduced size of the buffer status report.

4. The method of claim 3 , wherein the N channels of the M channels are at least one of a largest number of channels and a largest collection of uplink data, so that the unallocated part of the reserved portion is sufficiently sized for the reduced size of the buffer status report determined by the reduced number of M−N channels.

5. The method of claim 1 , wherein the unreserved portion is allocated to a part of the pending uplink data, the part being selected so that the unreserved portion is sufficiently sized for the part, if there is no number of N channels of the M channels so that the unreserved portion of the granted uplink data volume is not sufficiently sized for the uplink data pending for the N channels and so that the size of the buffer status report reduces to fit into the reserved portion with-out overlapping the allocated part of the reserved portion.

6. The method of claim 1 , further comprising, if the unreserved portion of the granted uplink data volume is sufficiently sized for all the uplink data pending for the M channels, allocating the unreserved portion to all of the pending uplink data.

7. The method of claim 1 , wherein the channels are logical channels of the Data Link layer.

8. The method of claim 1 , wherein the allocation includes scheduling a transmission of the allocated uplink data for an upcoming transmission time interval.

9. The method of claim 1 , wherein the method is triggered when a predetermined criterion for uplink transmission of a buffer status report is fulfilled.

10. A method, in a telecommunications device, of allocating an uplink data volume to uplink data pending for transmission, the method comprising:
receiving a grant of the uplink data volume;
reserving a portion of the granted uplink data volume for transmission of a buffer status report of a Data Link layer of the telecommunications device, wherein a size of the buffer status report depends on a number of channels for which uplink data is pending;
if an unreserved portion of the granted uplink data volume is sufficiently sized for the pending uplink data, allocating the unreserved portion to the pending uplink data;
if the unreserved portion of the granted uplink data volume is not sufficiently sized for the pending uplink data, allocating the unreserved portion and at least a part of the reserved portion to at least a portion of the pending uplink data when the allocation corresponds to a reduction of the number of channels for which uplink data is pending so that the buffer status report is at least one of reduced in size and avoided;
wherein each of the channels includes at least one radio bearer;
wherein the allocation of the unreserved portion is successively performed radio bearer by radio bearer until an unallocated part of the unreserved portion is not sufficiently sized for uplink data pending on a next radio bearer.

11. A method, in a telecommunications device, of allocating an uplink data volume to uplink data pending for transmission, the method comprising:
receiving a grant of the uplink data volume;
reserving a portion of the granted uplink data volume for transmission of a buffer status report of a Data Link layer of the telecommunications device, wherein a size of the buffer status report depends on a number of channels for which uplink data is pending;
if an unreserved portion of the granted uplink data volume is sufficiently sized for the pending uplink data, allocating the unreserved portion to the pending uplink data;
if the unreserved portion of the granted uplink data volume is not sufficiently sized for the pending uplink data, allocating the unreserved portion and at least a part of the reserved portion to at least a portion of the pending uplink data when the allocation corresponds to a reduction of the number of channels for which uplink data is pending so that the buffer status report is at least one of reduced in size and avoided;
wherein the Data Link layer includes a Packet Data Convergence Protocol sublayer, a Radio Link Control sublayer, and a Medium Access Control sublayer;
wherein the uplink data is pending on at least one of the Packet Data Convergence Protocol sublayer and the Radio Link Control sublayer;
wherein the reservation is performed by the Medium Access Control sublayer.

12. The method of claim 11 , wherein the size of the reserved portion and the size of the unreserved portion are determined by the Medium Access Control sublayer and signaled to each of the Packet Data Convergence Protocol sublayer and the Radio Link Control sublayer.

13. The method of claim 11 , wherein the allocation is performed by at least one of the Packet Data Convergence Protocol sublayer and the Radio Link Control sublayer.

14. A method, in a telecommunications device, of allocating an uplink data volume to uplink data pending for transmission, the method comprising:
receiving a grant of the uplink data volume;
reserving a portion of the granted uplink data volume for transmission of a buffer status report of a Data Link layer of the telecommunications device, wherein a size of the buffer status report depends on a number of channels for which uplink data is pending;
if an unreserved portion of the granted uplink data volume is sufficiently sized for the pending uplink data, allocating the unreserved portion to the pending uplink data;
if the unreserved portion of the granted uplink data volume is not sufficiently sized for the pending uplink data, allocating the unreserved portion and at least a part of the reserved portion to at least a portion of the pending uplink data when the allocation corresponds to a reduction of the number of channels for which uplink data is pending so that the buffer status report is at le

Assignees

• Leicht Hans Juergen
• Armbruster Joerg
• Hierl Gerhard
• Hofmann Christian
• ERICSSON TELEFON AB L M (publ)

Inventors

• Leicht Hans Juergen
• Armbruster Joerg
• Hierl Gerhard
• Hofmann Christian

Classifications

• H04W72/21 Primary

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

• H04W72/0413 Primary

  Electricity · mapped topic

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/1284

  Electricity · mapped topic

• H04W28/0278

  using buffer status reports (dynamic wireless traffic scheduling definition H04W72/12) · CPC title