Method for supporting sporadic high-capacity packet service and apparatus therefor

• US 10,356,754 B2
• Filed: 04/25/2016
• Issued: 07/16/2019
• Est. Priority Date: 05/10/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Hojae, Ko, Hyunsoo, Choi, Kukheon, Noh, Kwangseok, Kim, Dongkyu, Lee, Sangrim
• Primary Examiner(s): Rampuria, Sharad
• Application Number:
  US15/555,010
• Publication Number:
  US 20180041988A1
• Time in Patent Office: 1,177 Days
• CPC Class Codes: H04J 11/0036 at the receiver
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0014 Three-dimensional division time-code-space division H04B7/0413, H04B7/0697
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51
• CPC Class Codes: H04L 5/008 once only, on installation
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/001 Synchronization between nodes
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• 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

Abstract

A method for supporting a sporadic high-capacity packet service by a terminal may comprise the steps of: receiving, from a base station, control information including pre-defined timing information for synchronization and resource allocation information associated with the terminal; when uplink traffic occurs, performing transmission synchronization on the basis of the pre-defined timing information for synchronization; selecting a resource for uplink data transmission on the basis of the resource allocation information; and transmitting uplink data through the selected resource.

Claims

1. A method of transmitting massive sporadic packets of uplink data by a user equipment (UE), the method comprising:

receiving, from a base station (BS), control information including predefined timing information related to synchronization of transmission timings for the massive sporadic packets and resource allocation information related to a resource zone for the UE;

synchronizing, by the UE, the transmission timings for the massive sporadic packets based on the predefined timing information when uplink traffic occurs,

wherein additional control signals related to uplink data transmission of the massive sporadic packets are not received from the BS to the UE;

selecting a resource among a plurality of resources included in the resource zone, by the UE, for the uplink data transmission based on the resource allocation information; and

transmitting, to the BS, the massive sporadic packets through the selected resource,

wherein the resource zone is allocated commonly to a group of UEs having similar propagation delay time, and timing offset of the BS related to the group is configured to have a value less than a length of Cyclic Prefix (CP);

wherein the UE is included in the group.

2. The method according to claim 1, wherein the control information further includes information related to a pilot sequence specified for the UE;

and

wherein a pilot signal of the pilot sequence transmitted in the selected resource to be superposed with the massive sporadic packets.

3. The method according to claim 1, wherein the control information further includes hopping pattern information, the method further comprising:

receiving, from the BS, a NACK signal with respect to the uplink data transmission; and

selecting a resource for uplink data retransmission in response to the NACK signal, by performing resource hopping based on the hopping pattern information.

4. The method according to claim 1, wherein the massive sporadic packets are transmitted in a connectionless state with the BS.

5. The method according to claim 1, wherein the predefined timing information includes periodic timings.

6. The method according to claim 1, wherein the massive sporadic packets are transmitted at timings closest to periodic timings, included in the predefined timing information, after the uplink traffic occurs.

7. A user equipment (UE) for transmitting massive sporadic packets of uplink data, the UE comprising:

a receiver configured to receive, from a base station (BS), control information including predefined timing information related to synchronization of transmission timings for the massive sporadic packets and resource allocation information related to a resource zone for the UE;

a processor configured to;

synchronize the transmission timings for the massive sporadic packets based on the predefined timing information when uplink traffic occurs,

wherein additional control signals related to uplink data transmission of the massive sporadic packets are not received from the BS to the UE, and

select a resource among a plurality of resources included in the resource zone, for the uplink data transmission based on the resource allocation information, and

a transmitter configured to transmit, to the BS, the massive sporadic packets through the selected resource,

wherein the resource zone is allocated commonly to a group of UEs having similar propagation delay time, and timing offset of the BS related to the group is configured to have a value less than a length of Cyclic Prefix (CP);

wherein the UE is included in the group.

8. The UE according to claim 7, wherein the control information further includes information related to a pilot sequence specified for the UE;

and

the processor controls the transmitter to transmit a pilot signal of the pilot sequence in the selected resource to be superposed with the massive sporadic packets.

9. The UE according to claim 7, wherein the control information further includes hopping pattern information;

wherein the receiver is configured to receive, from the BS, a NACK signal with respect to the uplink data transmission; and

wherein the processor is configured to select a resource for uplink data retransmission in response to the NACK signal, by performing resource hopping based on the hopping pattern information.

10. The UE according to claim 7, wherein the massive sporadic packets are transmitted in a connectionless state with the BS.

11. The UE according to claim 7, wherein the predefined timing information includes periodic timings.

12. The UE according to claim 7, wherein the massive sporadic packets are transmitted at timings closest to periodic timings, included in the predefined timing information, after the uplink traffic occurs.