Apparatus, and associated method, for paging an access terminal in a radio communication system
View Patent ↗An apparatus, and an associated methodology for a communication system in which an access terminal is paged by a page sent on a paging channel. Hashes are generated by a hash generator at an access network to identify where in the paging message that page indications are to be positioned. And, hashes are generated at the access terminal to identify where in a received page that page indications are located.
1. A method in an access terminal, the method comprising:
monitoring a physical air interface channel for a message broadcast by an access network;
detecting for a first indicator at a first page indication location in the message, the first page indication location based upon a first hash value that is generated at the access terminal using a same manner that the access network uses to populate the message with the first indicator;
detecting for a second indicator at a second page indication location in the message, the second page indication location based upon a predetermined location known to both the access terminal and the access network; and
causing the access terminal to enter a changed state if both the first indicator and second indicator are detected.
2. The method of claim 1 wherein the detecting for a first indicator further comprises generating a first hash value from a number known to both the access network and the access terminal.
3. The method of claim 2 wherein the detecting for a first indicator further comprises sequentially modifying the number known to both the access network and the access terminal in a known way to generate a plurality of hash values.
4. The method of claim 3 wherein sequentially modifying the number known to both the access network and the access terminal further comprises sequencing by a time factor known to both the access network and the access terminal.
5. The method of claim 1 wherein the first page indication location and the second page indication location comprise two numbers of a set of N page indication locations.
6. The method of claim 5 wherein the detecting for a first indicator further comprises hashing a number from 1 to N−1 to determine the first page indication location and the detecting for a second indicator identifying the second page indication location as location N.
7. The method of claim 1 wherein the predetermined location is different than the first page indication location.
8. The method of claim 1 wherein the causing the access terminal to enter a changed state further comprises commencing the detection for a page message.