Device and method of handling service in unlicensed cell

• US 10,575,325 B2
• Filed: 10/04/2015
• Issued: 02/25/2020
• Est. Priority Date: 10/09/2014
• Status: Active Grant

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: Lee, Chien-Min
• Primary Examiner(s): Ho, Chuong T
• Application Number:
  US14/874,468
• Publication Number:
  US 20160105907A1
• Time in Patent Office: 1,605 Days
• Field of Search: 370336, 370335, 370337
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

A communication device for receiving a service in an unlicensed cell comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise receiving information of a resource pool in the unlicensed cell from a network; detecting a first starting point of a first service in the resource pool; and receiving the first service according to the first starting point, after the first starting point is detected.

Claims

1. A communication device for receiving a service in an unlicensed cell, comprising:

a storage device for storing instructions of;

receiving information of a resource pool in the unlicensed cell from a network;

detecting a first starting point of a first service in the resource pool according to the information of the resource pool;

receiving the first service according to the first starting point, after the first starting point is detected;

wherein the communication device detects the first starting point by detecting a discovery signal for the first service, and the discovery signal comprises at least one of a common reference signal (CRS), a primary synchronization signal (PSS) and a secondary synchronization signal (SSS); and

a processing circuit, coupled to the storage device, configured to execute the instructions stored in the storage device.

2. The communication device of claim 1, wherein the resource pool comprises part of a duration of the first service, or comprises the duration of the first service.

3. The communication device of claim 1, wherein the information of the resource pool is received in a licensed cell, is received in a higher layer signaling, or is received in a physical layer signaling.

4. The communication device of claim 1, wherein the information of the resource pool comprise a location of the resource pool.

5. The communication device of claim 1, wherein the instruction of receiving the first service according to the first starting point comprises:

receiving the first service according to the first starting point and a duration of the first service.

6. The communication device of claim 5, wherein information of the duration of the first service is received from the network, or is predetermined in the communication device.

7. The communication device of claim 1, wherein the discovery signal and the first service are transmitted in a same subframe, or are transmitted in different subframes.

8. The communication device of claim 1, wherein the storage device further stores the instruction of:

stopping detecting any service in the resource pool, if no service is detected in a period of the resource pool.

9. The communication device of claim 1, wherein the storage device further stores the instruction of:

stopping detecting any service in the resource pool, if an indicator in the first service indicates that there is no service in the resource pool.

10. The communication device of claim 1, wherein the first service comprises a licensed assisted access (LAA) service defined in a 3rd Generation Partnership Project (3GPP) standard.

11. A communication device for handling a data detection in an unlicensed cell, comprising;

receiving information of a timing offset in a first subframe of a cell of the network; and

detecting data received in a second subframe of an unlicensed cell of the network according to the first subframe and the timing offset, wherein the first subframe is later than the second subframe; and

a processing circuit, coupled to the storage device, configured to execute the instructions stored in the storage device,

wherein the storage device further stores the instruction of;

transmitting a hybrid automatic repeat request (HARQ) feedback in response to the data in a third subframe of the cell according to the first subframe.

12. The communication device of claim 11, wherein the cell is a licensed cell, is the unlicensed cell, or is another unlicensed cell.

13. The communication device of claim 11, wherein subframe indices of the first subframe and the second subframe are the same.

14. The communication device of claim 11, wherein the information of the timing offset is transmitted in downlink (DL) control information (DCI) of the first subframe.

15. The communication device of claim 11, wherein the timing offset comprises a number of orthogonal frequency division multiplexing (OFDM) symbols and/or a number of subframes.

16. The communication device of claim 11, wherein the information of the timing offset is represented by at least one bit.

17. The communication device of claim 11, wherein the storage device further stores the instruction of:

receiving an indicator in the first subframe of the cell of the network, wherein the indicator indicates that at least the second subframe is a schedulable subframe.

18. The communication device of claim 17, wherein the indicator comprises a discovery signal.