Method and apparatus for synchronization processing

• US 9,386,598 B2
• Filed: 03/21/2011
• Issued: 07/05/2016
• Est. Priority Date: 09/22/2008
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Ai, Jianxun, Zhai, Hengxing
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): TRAN, THINH D
• Application Number:
  US13/052,307
• Publication Number:
  US 20110164544A1
• Time in Patent Office: 1,933 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 12/1881 with schedule organisation, e.g. priority, sequence management
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

The present invention discloses a method and an apparatus for synchronization processing, wherein the method for synchronization processing includes: a designated network element receiving multiple data bursts of a Multimedia Broadcast Multicast Service transmitted by its upper layer network element, wherein data packets in the data bursts carry timestamp information; for multiple data bursts whose timestamp locates before a current available transmitting time interval, the designated network element starting to transmit the data packets belonging to the multiple data bursts in turn from the start time of the current available transmitting time interval. By means of the present invention, the synchronization between the lower layer network elements can be kept and the performance of a system can be stabilized.

Claims

1. A method for synchronization processing, comprising:

a designated network element receiving multiple data bursts of a Multimedia Broadcast Multicast Service transmitted by its upper layer network element, wherein data packets in the data bursts carry timestamp information;

for multiple data bursts whose timestamp locates before a current available transmitting time interval, the designated network element starting to transmit the data packets belonging to the multiple data bursts in turn from the start time of the current available transmitting time interval, wherein different timestamp of multiple data bursts locates between a last available transmitting time interval and a next available transmitting time interval;

wherein the current available transmitting time interval is the next time interval of wireless interface resources used to transmitting the data packets and the Multimedia Broadcast Multicast Service is transmitted at wireless interfaces in a manner of Time Division Multiplexing (TDM) to use a wireless interface channel.

2. The method according to claim 1, wherein

the designated network element sequentially performs an RLC concatenation processing on data packets belonging to different data bursts according to the order of timestamps;

or

the designated network element performs an RLC concatenation processing on data packets belonging to a same data burst, and transmits, in a same TTI, data packets which belong to different data bursts and have been subjected to RLC processing;

or

the designated network element performs an RLC concatenation processing on data packets belonging to a same data burst, and transmits, in different TTIs, data packets which belong to different data bursts and have been subjected to RLC processing.

3. The method according to claim 2, wherein the operation that the designated network element starts to transmit the data packets belonging to the multiple data bursts in turn from the start time of the current available transmitting time interval is:

transmitting, in the current available transmitting time interval, data bursts that were not transmitted in a last available transmitting time interval;

or

not transmitting, in the current available transmitting time interval, data bursts that were not transmitted in the last available transmitting time interval.

4. The method according to claim 2, wherein the data bursts are a group of data packets marked with same timestamp information.

5. The method according to claim 1, wherein the operation that the designated network element starts to transmit the data packets belonging to the multiple data bursts in turn from the start time of the current available transmitting time interval is:

transmitting, in the current available transmitting time interval, data bursts that were not transmitted in a last available transmitting time interval;

or

not transmitting, in the current available transmitting time interval, data bursts that were not transmitted in the last available transmitting time interval.

6. The method according to claim 1, wherein the data bursts are a group of data packets marked with same timestamp information.

7. An apparatus for synchronization processing, which locates at a designated network element side, comprising:

receiving means, configured to receive multiple data bursts of a Multimedia Broadcast Multicast Service transmitted by an upper layer network element, wherein data packets in the data bursts carry timestamp information, wherein the Multimedia Broadcast Multicast Service is transmitted at wireless interfaces in a manner of Time Division Multiplexing (TDM) to use a wireless interface channel; and

processing means, configured to, for multiple data bursts whose timestamp locates before a current available transmitting time interval, start to transmit the data packets belonging to the multiple data bursts in turn from the start time of the current available transmitting time interval, wherein different timestamp of multiple data bursts locates between a last available transmitting time interval and a next available transmitting time interval;

wherein the current available transmitting time interval is the next time interval of wireless interface resources used to transmitting the data packets.

8. The apparatus according to claim 7, wherein the processing means comprises:

first processing means, configured to perform an RLC concatenation processing on data packets belonging to different data bursts according to the order of timestamps;

or

second processing means, configured to respectively perform the RLC concatenation processing on data packets belonging to a same data burst, and to transmit, in a same TTI, data packets which belong to different data bursts and have been subjected to RLC processing;

or

third processing means, configured to respectively perform the RLC concatenation on data packets belonging to the same data burst, and transmit, in different TTIs, data packets which belong to different data bursts and have been subjected to RLC processing.

9. The apparatus according to claim 8, wherein the data bursts are a group of data packets marked with same timestamp information.

10. The apparatus according to claim 7, wherein the processing means is also configured to transmit, in the current available transmitting time interval, data bursts that were not transmitted in a last available transmitting time interval, or configured not to transmit, in the current available transmitting time interval, data bursts that were not transmitted in the last available transmitting time interval.

11. The apparatus according to claim 10, wherein the data bursts are a group of data packets marked with same timestamp information.

12. The apparatus according to claim 7, wherein the data bursts are a group of data packets marked with same timestamp information.