ADDRESSING MULTIPLE COMMUNICATION TERMINALS IN A WIRELESS COMMUNICATION NETWORK
First Claim
1. A communication device of a wireless communication network, the communication device comprising:
- a message generator configured to generate a beacon message having a traffic indication map (TIM) information element (IE), wherein the TIM IE comprises a partial virtual bitmap field comprising at least one cluster, and a bitmap control field indicating the number of clusters in the partial virtual bitmap field;
a determiner configured to determine for the at least one cluster information indicating whether data is available in the communication device to be transmitted to a plurality of communication terminals of the wireless communication network;
an encoder configured to determine an encoding mode for the information depending on the information and to encode the information based on the encoding mode, wherein the at least one cluster comprises the encoded information and indicates the encoding mode; and
a transmitter configured to broadcast the beacon message to the plurality of communication terminals corresponding to the at least one cluster.
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Abstract
The present invention is directed to a communication device of a wireless communication network, the communication device including a message generator configured to generate a beacon message having a traffic indication map (TIM) information element (IE), wherein the TIM IE includes a partial virtual bitmap field including at least one cluster; a determiner configured to determine for at least one cluster information indicating whether data is available in the communication device to be transmitted to a plurality of communication terminals of the wireless communication network; an encoder configured to determine an encoding mode for the information depending on the information and to encode the information based on the encoding mode; and a transmitter configured to broadcast the beacon message to the plurality of communication terminals corresponding to the at least one cluster. Methods of simultaneously addressing a plurality of communication terminals in the wireless communication network are also disclosed.
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Citations
39 Claims
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1. A communication device of a wireless communication network, the communication device comprising:
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a message generator configured to generate a beacon message having a traffic indication map (TIM) information element (IE), wherein the TIM IE comprises a partial virtual bitmap field comprising at least one cluster, and a bitmap control field indicating the number of clusters in the partial virtual bitmap field; a determiner configured to determine for the at least one cluster information indicating whether data is available in the communication device to be transmitted to a plurality of communication terminals of the wireless communication network; an encoder configured to determine an encoding mode for the information depending on the information and to encode the information based on the encoding mode, wherein the at least one cluster comprises the encoded information and indicates the encoding mode; and a transmitter configured to broadcast the beacon message to the plurality of communication terminals corresponding to the at least one cluster. - View Dependent Claims (7, 8, 9, 11, 13, 14, 15, 16, 19, 21, 22, 23, 24)
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2-6. -6. (canceled)
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10. (canceled)
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12. (canceled)
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17-18. -18. (canceled)
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20. (canceled)
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25-27. -27. (canceled)
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28. A communication terminal according to claim further comprising:
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a receiver configured to receive from a communication device of the wireless communication network a beacon message having a traffic indication map (TIM) information element (IE), wherein the TIM IE comprises a partial virtual bitmap field comprising at least one cluster, and a bitmap control field indicating the number of clusters in the partial virtual bitmap field, and wherein the at least one cluster comprises an encoded information and indicates an encoding mode; a decoder configured to decode the encoded information based on the encoding mode; a determiner configured to determine based on the information whether the communication terminal is to retrieve data from the communication device, wherein the beacon message is for a group of communication terminals; and wherein the communication terminal is part of the group. - View Dependent Claims (32, 33, 34)
wherein the determiner is configured to determine that the communication terminal is to retrieve a buffered data from the communication device if the AID of the communication terminal matches one of the plurality of AIDs of the decoded information;
or to determine that the communication terminal is to be in a power saving mode if the AID of the communication terminal fails to match any of the plurality of AIDs of the decoded information.
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33. The communication terminal of claim 28,
wherein the decoded information comprises a first bitmap; - and information about the group corresponding to a group identity (GID); and
wherein the determiner is configured to determine that the communication terminal is to retrieve a buffered data from the communication device if the GID and the AID of the communication terminal respectively match the information about the group and an address of the first bitmap;
or to determine that the communication terminal is to be in a power saving mode if at least one of the GID and the AID of the communication terminal fails to match the information about the group and any address of the first bitmap respectively.
- and information about the group corresponding to a group identity (GID); and
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34. The communication terminal of claim 33,
wherein the decoded information comprises a first part indicative of a number of groups (G) of communication terminals of the wireless communication network; - and a second part including G segments, each segment comprising a second bitmap and a second control field for the second bitmap; and
being associated to a group identity (GID),wherein the information about the group corresponds to the first part and the second control field of the second part; and
wherein the first bitmap corresponds to the second bitmap of the second part; andwherein the determiner is configured to determine that the communication terminal is to retrieve the buffered data from the communication device if the GID and the AID of the communication terminal respectively match the GID and a bitmap address of the segment;
or to determine that the communication terminal is to be in the power saving mode if at least one of the GID and the AID of the communication terminal fails to match the GID and any bitmap address of the segment respectively.
- and a second part including G segments, each segment comprising a second bitmap and a second control field for the second bitmap; and
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29-31. -31. (canceled)
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35-36. -36. (canceled)
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37. A method of simultaneously addressing a plurality of communication terminals of a wireless communication network, the method comprising:
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generating a beacon message having a traffic indication map (TIM) information element (IE), wherein the TIM IE comprises a partial virtual bitmap field comprising at least one cluster, and a bitmap control field indicating the number of clusters in the partial virtual bitmap field; determining for the at least one cluster information indicating whether data is available in a communication device to be transmitted to the plurality of communication terminals of the wireless communication network; determining an encoding mode for the information depending on the information and encoding the information based on the encoding mode, wherein the at least one cluster comprises the encoded information and indicates the encoding mode; and broadcasting the beacon message to the plurality of communication terminals corresponding to the at least one cluster. - View Dependent Claims (38)
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39-72. -72. (canceled)
Specification