Mobile station and network having hierarchical index for cell broadcast service
First Claim
1. A method for providing and using a cell broadcast service in a cellular communications network, comprising the steps of:
- providing a digital transmission channel from a BMI to a plurality of mobile stations, the channel being logically partitioned into a plurality of subchannels;
broadcasting a plurality of different types of messages on a plurality of the subchannels while broadcasting indexing information for the messages on a first predetermined other one of the subchannels, the indexing information comprising at least one message summary portion that is descriptive of an informational content of at least one of the messages; and
receiving the indexing information with a mobile station and using the indexing information to acquire at least one of the messages from one of the plurality of subchannels.
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Accused Products
Abstract
This invention provides for the use of an index message in a Cell Broadcast Service. An index message is considered to be a special type of Cell Broadcast message which contains general information about actual broadcast messages. The index message is transmitted in a predetermined logical S-BCCH subchannel, and contains information elements such as (a) message overviews or summaries for each cell broadcast message, (b) information concerning emergency messages, (c) information concerning the language used in different broadcast messages, (d) an alphanumeric broadcast domain operator name and a specific operator greeting, (e) information concerning changes in broadcast messages, and (f) information concerning subchannels.
212 Citations
23 Claims
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1. A method for providing and using a cell broadcast service in a cellular communications network, comprising the steps of:
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providing a digital transmission channel from a BMI to a plurality of mobile stations, the channel being logically partitioned into a plurality of subchannels;
broadcasting a plurality of different types of messages on a plurality of the subchannels while broadcasting indexing information for the messages on a first predetermined other one of the subchannels, the indexing information comprising at least one message summary portion that is descriptive of an informational content of at least one of the messages; and
receiving the indexing information with a mobile station and using the indexing information to acquire at least one of the messages from one of the plurality of subchannels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing and using a cell broadcast service in a cellular communications network, comprising the steps of:
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providing a digital transmission channel from a BMI to a plurality of mobile stations, the channel being logically partitioned into a plurality of subchannels;
broadcastincr a plurality of different types of messages on a plurality of the subchannels while broadcasting indexing information for the messages on a first predetermined other one of the subchannels; and
receiving the indexing information with a mobile station and using the indexing information to acquire at least one of the messages from one of the plurality of subchannels, wherein the indexing information is comprised of a plurality of index messages, and wherein the indexing information includes an index message count.
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12. A digital cellular telecommunications system comprising a BMI having at least one base station for transmitting information to a plurality of mobile stations, said system comprising:
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at least one digital transmission channel that is logically partitioned into a plurality of subchannels;
a BMI controller for broadcasting a pluratity of different types of messages on a plurality of the subchannels while broadcasting indexing information for the messages on at least one predetermined other one of the subcahannels, the indexing information comprising at least one message summary portion that is descriptive of an informational content of at least one of the messages; and
a mobile station controller for receiving the indexing information and for using the indexing information to acquire at least one of the messages from one of the plurality of subchannels. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A digital cellular telecommunications system comprising a BMT having at least one base station for transmitting information to a plurality of mobile stations, said system comprising:
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at least one digital transmission channel that is logically partitioned into a plurality of subchannels;
a controller for broadcasting a plurality of different types of messages on a plurality of the subchannels while broadcasting indexing information for the messages on at least one predetermined other one of the subchannels; and
means in each of said mobile stations for receiving the indexing information and for using the indexing information to acquire at least one of the messages from one of the plurality of subchannels, wherein the indexing information is comprised of a plurality of index messages, and wherein the indexing information includes an index message count.
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23. A method for broadcasting messages in a cellular communications network having forward channels organized as frames and hyperframes, comprising the steps of:
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partitioning a forward digital transmission channel into n subchannels;
broadcasting a plurality of different types of messages on a plurality of the n subchannels while broadcasting indexing information for the messages on a first predetermined other one of the subchannels; and
receiving the indexing information with a mobile station and using the indexing information to acquire at least one of the messages from one of the plurality of subchannels, wherein the indexing information is transmitted on a subchannel 0, wherein a cycle of subchannel 0 information begins coincident with a hyperframe counter value of zero;
whereina subchannel 1 provide messages associated with subchannels 2 through n that have been recently changed or modified, wherein subchannel 1 is started at a completion of any subchannel, or is started by interrupting a subchannel (other than subchannel 0 or 1; and
whereinall remaining 2-n subchannels may be sent in any order, and are subject to interruption by subchannels 0 and 1.
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Specification