Method for receiving system information
First Claim
1. A method for receiving system information from a base station (BS) supporting a first communication system and a second communication system, the method comprising:
- searching a frequency band of the first communication system, and receiving a FCH (frame control header) including first information indicating if the second communication system is supported; and
receiving system information of the second communication system if the first information indicates that the second communication system is supported,wherein the system information is received via downlink MAP messages,wherein the FCH includes a count value indicating which one of the downlink MAP messages includes the system information, andwherein the count value is subtracted by ‘
1’
each time any one of the downlink MAP messages is transmitted, and if the count value becomes ‘
0’
at a specific frame, the count value is reset to an initial value at a next frame of the specific frame, the initial value being a value other than ‘
0’
.
1 Assignment
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Accused Products
Abstract
A method for a mobile station (MS) to acquire system information of other communication systems via an initial entry communication system in which the mobile station (MS) initially enters via a base station (BS) is disclosed. The BS can deliver system information using a message transmitted to the MS at each frame or at intervals of a periodic time. In other words, the BS delivers specific information indicating whether the system is supported or not in a message. If the system is supported, the BS transmits a message including the system information to the MS. During or after the initial entry, the BS may deliver the system information using messages communicated with the MS. Namely, the BS can voluntarily or on the MS′ demand transmit a message including the system information to the MS indicating whether the system is supported.
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Citations
7 Claims
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1. A method for receiving system information from a base station (BS) supporting a first communication system and a second communication system, the method comprising:
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searching a frequency band of the first communication system, and receiving a FCH (frame control header) including first information indicating if the second communication system is supported; and receiving system information of the second communication system if the first information indicates that the second communication system is supported, wherein the system information is received via downlink MAP messages, wherein the FCH includes a count value indicating which one of the downlink MAP messages includes the system information, and wherein the count value is subtracted by ‘
1’
each time any one of the downlink MAP messages is transmitted, and if the count value becomes ‘
0’
at a specific frame, the count value is reset to an initial value at a next frame of the specific frame, the initial value being a value other than ‘
0’
. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mobile station configured to receive system information from a base station (BS) supporting a first communication system and a second communication system, the mobile station comprising:
a processor configured to search a frequency band of the first communication system, and receive a FCH (frame control header) including first information indicating if the second communication system is supported, and receive system information of the second communication system if the first information indicates that the second communication system is supported, wherein the system information is received via downlink MAP messages, wherein the FCH includes a count value indicating which one of the downlink MAP messages includes the system information, and wherein the count value is subtracted by ‘
1’
each time any one of the downlink MAP messages is transmitted, and if the count value becomes ‘
0’
at a specific frame, the count value is reset to an initial value at a next frame of the specific frame, the initial value being a value other than ‘
0’
.
Specification