Method and device for uplink resource allocation

• US 9,197,384 B2
• Filed: 03/20/2014
• Issued: 11/24/2015
• Est. Priority Date: 09/14/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yang, Suckchel, Kim, Mingyu, Ahn, Joonkui, Seo, Dongyoun
• Primary Examiner(s): Zhou, Yong
• Application Number:
  US14/221,120
• Publication Number:
  US 20140204879A1
• Time in Patent Office: 614 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method for transmitting an uplink signal by a device in a wireless communication system, the method including receiving a control channel signal including a resource allocation (RA) field; and transmitting an uplink signal according to the control channel signal. A size of the RA field is represented by the following expression MAX (RASizeA, RASizeB). RASizeA is a first number of bits for indicating a resource indication value (RIV) corresponding to a starting resource block (RB) and a length of contiguously allocated RBs. RASizeB is a second number of bits for indicating a combinatorial index r corresponding to 4 indexes, and the 4 indexes are used to indicate a start resource block group (RBG) index and an end RBG index of a first RB set and a start RBG index and an end RBG index of a second RB set.

Claims

1. A method for transmitting an uplink signal by a device in a wireless communication system, the method comprising:

receiving a control channel signal including a resource allocation (RA) field; and

transmitting an uplink signal according to the control channel signal,

wherein a size of the RA field is represented by the following expression;

MAX(RASizeA,RASizeB),

wherein RASizeA is a first number of bits required for representing a resource indication value (RIV) corresponding to a starting resource block (RB) and a length of contiguously allocated RBs within a given uplink bandwidth, and

wherein RASizeB is a second number of bits required for representing a combinatorial index r corresponding to 4 indexes, and the 4 indexes are used to indicate a start resource block group (RBG) index and an end RBG index of a first RB set and a start RBG index and an end RBG index of a second RB set within the given uplink bandwidth.

2. The method of claim 1, wherein RASizeA is determined using N_RB^UL(N_RB^UL+1)/2, and RASizeB is determined using

3. The method of claim 2, wherein RASizeA is ┌

log₂(N_RB^UL(N_RB^UL+1)/2)┐

, and RASizeB is

4. The method of claim 3, wherein a value of P is given by the following table:

5. The method of claim 1, wherein the combinatorial index r is given by the following expression:

6. The method of claim 1, wherein if RASizeA>

RASizeB, the combinatorial index r is included in a Least Significant Part (LSB) part of the RA field.

7. The method of claim 1, wherein the control channel signal is a Physical Downlink Control Channel (PDCCH) signal, and the uplink signal is a Physical Uplink Shared Channel (PUSCH) signal.

8. The method of claim 1, wherein RASizeA is determined according to a first RA type and the first RA type indicates to a scheduled user equipment (UE) a set of contiguously allocated virtual resource block (VRB) indices.

9. The method of claim 1, wherein RASizeB is determined according to a second RA type and the second RA type indicates to a scheduled user equipment (UE) the first and second RB sets, each of the first and second RB sets including consecutive RBGs, each of the RBGs having a size P.

10. A device for use in a wireless communication system, the device comprising:

a radio frequency (RF) unit; and

a processor,

wherein the processor is operatively coupled to the RF unit and configured to;

receive a control channel signal including a resource allocation (RA) field, and

transmit an uplink signal according to the control channel signal,

wherein a size of the RA field is represented by the following expression;

Max(RASizeA,RASizeB),

wherein RASizeA is a first number of bits required for resenting a resource indication value (RIV) corresponding to a starting resource block (RB) and a length of contiguously allocated RBs within a given uplink bandwidth, and

wherein RASizeB is a second number of bits required for representing a combinatorial index r corresponding to 4 indexes, and the 4 indexes are used to indicate a start resource block group (RBG) index and an end RBG index of a first RB set and a start RBG index and an end RBG index of a second RB set within the given uplink bandwidth.

11. The device of claim 10, wherein RASizeA is determined using N_RB^UL(N_RB^UL+1)/2, and RASizeB is determined using

12. The device of claim 11, wherein RASizeA is ┌

log₂(N_RB^UL(N_RB^UL+1)/2)┐

, and RASizeB is

13. The device of claim 12, wherein a value of P is given by the following table:

14. The device of claim 10, wherein the combinatorial index r is given by the following expression:

15. The device of claim 10, wherein if RASizeA>

RASizeB, the combinatorial index r is included in a Least Significant Part (LSB) part of the RA field.

16. The device of claim 10, wherein the control channel signal is a Physical Downlink Control Channel (PDCCH) signal, and the uplink signal is a Physical Uplink Shared Channel (PUSCH) signal.

17. The device of claim 10, wherein RASizeA is determined according to a first RA type and the first RA type indicates to a scheduled user equipment (UE) a set of the contiguously allocated virtual resource block (VRB) indices.

18. The device of claim 10, wherein RASizeB is determined according to a second RA type and the second RA type indicates to a scheduled user equipment (UE) the first and second RB sets, each of the first and second RB sets including consecutive RBGs, each of the RBGs having a size P.