Method and system for efficient data transmission in wireless communication systems

• US 7,035,656 B2
• Filed: 12/18/2002
• Issued: 04/25/2006
• Est. Priority Date: 05/01/2002
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Goldberg, Steven Jeffrey
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Aminzay, Shaima Q.
• Application Number:
  US10/322,165
• Publication Number:
  US 20030208366A1
• Time in Patent Office: 1,224 Days
• Field of Search: 455/412.1, 455/412.2, 455/414.1, 455/414.3, 455/414.4, 455/458, 455/466, 455/517, 455/464, 455/455, 455/515, 455/516, 455/414.2, 455/67.16, 455/13.3, 455/72, 455/63.4, 455/426.1, 455/503, 455/3.02, 455/70, 340/7.1, 340/7.2, 340/7.21, 340/7.22, 340/7.24, 340/7.28, 340/7.29, 340/7.31, 340/7.35, 340/7.39, 340/7.41, 340/7.43, 340/7.45, 340/7.46, 340/7.48, 340/7.52, 340/7.53, 340/7.55, 340/7.56, 370/473, 370/352, 370/521, 370/329, 370/432, 370/477, 708/203, 709/247
• US Class Current: 455/517
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Abstract

A network controller for controlling a message over a communication network constantly monitors actually transmitted message from or to a particular user. If the controller determines a particular phrase is transmitted more than a predetermined number of times, the controller updates support data and transmits the data in a compressed format with support data. The network controller may send an updated support data in response to a request from a user equipment. In this way, the present invention reduces the amount of traffic over the network.

Claims

1. A method for transmitting data to a group of user equipments (UEs) by multicasting or broadcasting over a wireless communication system comprising:

monitoring actually transmitted messages multicast or broadcast to the group of UEs in a wireless communication system;

generating a list of phrases in the messages that are sent repeatedly more than a predetermined threshold to the group of UEs;

transmitting the list of phrases to the group of UEs;

determining whether any particular phrases contained within new messages have been received by any of the UEs within the group of UEs;

identifying the UEs that have received the particular phrases contained within the new messages a predetermined number of times;

determining whether any of the identified UEs requires a latest version of support data for decoding compressed phrases;

transmitting the latest version of support data to those identified UEs requiring said support data for decoding compressed phrases; and

transmitting the phrases in the new messages to the identified UEs in a compressed format.

2. The method of claim 1 wherein the messages are user-to-user messages.

3. The method of claim 1 wherein the messages are monitored in the downlink.

4. The method of claim 1 wherein the messages are monitored in the uplink.

5. The method of claim 1 wherein the particular phrases are single phrase messages.

6. The method of claim 1 wherein the particular phrases are multiple phrase messages.

7. The method of claim 1 wherein the particular phrases are part of periodically sent data that is sent to users who subscribe to a service delivered over the wireless communication system.

8. The method of claim 7 wherein the particular phrases include numerical data.

9. A method for transmitting data by multicasting or broadcasting over a wireless communication system comprising:

monitoring actually transmitted downlink messages multicast or broadcast to a group of user equipments (UEs);

generating a list of phrases in the downlink messages that are sent repeatedly more than a predetermined threshold to the group of UEs and remain the same between periods; and

transmitting as support data the list of phrases to the group of UEs that receive the downlink messages so that the downlink messages may be delivered to the UEs in a compressed format;

determining whether any of the identified UES requires a latest version of support data for decoding compressed phrases;

transmitting the latest version of support data to those identified UEs requiring said support data for decoding compressed phrases; and

wherein the support data comprises templates that allow the system to refrain from retransmitting data that has not changed since the last time it was transmitted.

10. The method of claim 9 wherein the downlink messages are related to a service delivered over the network to users subscribing to the service.