| Method for utilizing multicast services to enhance user equipment battery life -> Monitor Keywords |
|
|
 
Method for utilizing multicast services to enhance user equipment battery lifeMethod for utilizing multicast services to enhance user equipment battery life description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090122742, Method for utilizing multicast services to enhance user equipment battery life. Brief Patent Description - Full Patent Description - Patent Application Claims
This application is a continuation of U.S. patent application Ser. No. 10/325,794 filed Dec. 19, 2002 which claims the benefit of U.S. Provisional Patent Application No. 60/413,954, filed Sep. 26, 2002, which are incorporated by reference as if fully set forth. The present invention generally relates to efficient message transmission in cellular systems. More particularly, the present invention is related to efficient transmission of multicast and broadcast services to user equipment to conserve radio resources and extend battery life. Third generation (3G) cellular systems are continually being modified to improve the efficiency of transmission of multicast and broadcast services to user equipment (UE). There are various parameters that are desirable to optimize in these cellular systems and networks. Typically, when one of the parameters is optimized, the optimum for another parameter is sacrificed. One of the opposing sets of parameters comprises UE power consumption versus radio resource utilization. For minimum power consumption, UEs should actively search for signals as infrequently as possible. As shown in Additionally, for efficient radio resource utilization, the same message targeted to multiple UEs should ideally be sent only once. For example, referring to An important consideration is how to satisfy opposing requirements of both the UE power consumption and radio resource utilization to an acceptable degree. It is desirable to optimize both UE power consumption and radio resource utilization so that the sacrifice in each is within an acceptable range. To satisfy the UE power requirements, the system can transmit multiple message notifications within a synchronized time period. Each broadcast service or message, or target group for a service is assigned an identifier. The UE can search for the identifier to know that a message it should receive is being transmitted. If the UE does not detect the appropriate identifier within a certain time period, the UE can go into a sleep-mode until the next cycle of the time period occurs. Prior methods of message transmission in cellular systems have had disadvantages which resulted in loss of UE battery life. Although a desirable approach would be to put the group identifiers for all of the different services expected by UE in the same time window, this approach requires that the UE must look for two or more identifiers, which are likely made up of different groups of UEs. While it may be possible to coordinate some of the recipients into the same search window, the majority will often still require multiple windows. For example, as shown in
| ||
How KEYWORD MONITOR works... a FREE service from FreshPatents
