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 memory; and
a processor coupled with the memory, wherein the processorgenerates 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,determines 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,determines 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, coupled with the processor, configured to broadcast the beacon message to the plurality of communication terminals corresponding to the at least one clusterwherein the encoded information comprises a first bitmap, a first control field for the first bitmap, and information about the group corresponding to a group identity (GID), andwherein the encoded 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 the 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.
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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
15 Claims
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1. A communication device of a wireless communication network, the communication device comprising:
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a memory; and a processor coupled with the memory, wherein the processor generates 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, determines 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, determines 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, coupled with the processor, configured to broadcast the beacon message to the plurality of communication terminals corresponding to the at least one cluster wherein the encoded information comprises a first bitmap, a first control field for the first bitmap, and information about the group corresponding to a group identity (GID), and wherein the encoded 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 the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communication device of a wireless communication network, the communication device comprising:
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a memory; a processor coupled with the memory, wherein the processor generates 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, determines 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, determines 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, wherein the encoded information comprises a first bitmap, a first control field for the first bitmap, and information about the group corresponding to a group identity (GID), and wherein the information about the group comprises; a part indicative of a number of groups (G) of communication devices of the wireless communication network, and a group indicator map (GIM) field with G bits, each of the G bits corresponding to a group of communication terminals from the groups of communication terminals; and wherein the first bitmap is arranged to be decoded by the group of communication terminals depending on a state of the corresponding bit in the GIM field.
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12. A communication terminal of a wireless communication network, the communication terminal 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 processor coupled with the receiver, wherein the processor decodes the encoded information based on the encoding mode, and determines 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,wherein the decoded information comprises a first bitmap; and
information about the group corresponding to a group identity (GID),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 the 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. - View Dependent Claims (13)
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14. 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, wherein the encoded information comprises a first bitmap, a first control field for the first bitmap, and information about the group corresponding to a group identity (GID), and wherein the encoded 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 the 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. - View Dependent Claims (15)
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Specification