Communications systems and method
First Claim
1. A communications system, comprising plural communications devices for forming part of a mobile radio network comprising a plurality of base stations arranged to communicate data to and from the plural communications devices via a wireless access interface, each of the communications devices comprising:
- a controller configured toassociate the communications device with at least one other communications device forming a group, each of the associated communications devices being configured to transmit and receive data from one or more of the base stations, wherein all of the associated communications devices of the group include a common identifier, andestablish a communications session using the common identifier to communicate data, via the mobile radio network, to and from any of the associated communications devices of the group, whereineach of the communications devices within the group of associated communications devices is provided with a unique data sequence of a set of predefined data sequences for use in forming a random access burst for transmission in a random access communications channel of the wireless access interface, the set of predefined data sequences being uniquely associated with the group,the mobile radio network is arranged to transmit a signalling message indicating a grant of uplink resources in response to the random access burst representing a request for uplink resources by a communications device identified by its unique data sequence, the signalling message including the unique data sequence which was used to form the random access burst transmitted by the communications device,in response to the transmission of the random access burst in the random access communications channel by one of the communications devices of the group, the other communications devices of the group are arranged to enter a listening state for detecting data transmitted to the group of devices via a packet data communications channel of the wireless access interface, and the other communications devices of the group wait a predetermined time after not detecting data transmitted via the packet data communications channel before attempting to transmit a random access burst on the random access communications channel.
1 Assignment
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Accused Products
Abstract
A communications system includes a mobile radio network including plural base stations to communicate data to/from mobile communications devices via a wireless access interface, and plural associated communications devices transmitting and receiving data with the base stations. Each associated communication device includes a same common identifier to establish communication sessions communicating data via the mobile radio network. The group of communications devices may communicate machine type communications for a particular application, for example in a vehicle, to report parameters that can be served by a separate communications device that reports periodically on the parameters detected by an associated sensor. With spatial proximity of the communications devices, each can receive control plane signalling data and accordingly communication of signalling data is as if broadcast to a local environment in which the group of communications devices are disposed, to save communications bandwidth proportional to a number of devices in the group.
21 Citations
17 Claims
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1. A communications system, comprising plural communications devices for forming part of a mobile radio network comprising a plurality of base stations arranged to communicate data to and from the plural communications devices via a wireless access interface, each of the communications devices comprising:
a controller configured to associate the communications device with at least one other communications device forming a group, each of the associated communications devices being configured to transmit and receive data from one or more of the base stations, wherein all of the associated communications devices of the group include a common identifier, and establish a communications session using the common identifier to communicate data, via the mobile radio network, to and from any of the associated communications devices of the group, wherein each of the communications devices within the group of associated communications devices is provided with a unique data sequence of a set of predefined data sequences for use in forming a random access burst for transmission in a random access communications channel of the wireless access interface, the set of predefined data sequences being uniquely associated with the group, the mobile radio network is arranged to transmit a signalling message indicating a grant of uplink resources in response to the random access burst representing a request for uplink resources by a communications device identified by its unique data sequence, the signalling message including the unique data sequence which was used to form the random access burst transmitted by the communications device, in response to the transmission of the random access burst in the random access communications channel by one of the communications devices of the group, the other communications devices of the group are arranged to enter a listening state for detecting data transmitted to the group of devices via a packet data communications channel of the wireless access interface, and the other communications devices of the group wait a predetermined time after not detecting data transmitted via the packet data communications channel before attempting to transmit a random access burst on the random access communications channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling communications devices forming part of a mobile radio network comprising a plurality of base stations arranged to communicate data to and from the communications devices via a wireless access interface, the method comprising:
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associating one of the communications devices with at least one other of the communications devices as a group, each of the associated communications devices transmitting and receiving data from one or more of the base stations, wherein all of the associated communications devices of the group include a common identifier, and establishing communications sessions for communicating data to and from any of the associated communications devices via the mobile radio network, using the common identifier, wherein each of the communications devices within the group of associated communications devices is provided with a unique data sequence of a set of predefined data sequences for use in forming a random access burst for transmission in a random access communications channel of the wireless access interface, the set of predefined data sequences being uniquely associated with the group, the mobile radio network is arranged to transmit a signalling message indicating a grant of uplink resources in response to the random access burst representing a request for uplink resources by a communications device identified by its unique data sequence, the signalling message including the unique data sequence which was used to form the random access burst transmitted by the communications device, in response to the transmission of the random access burst in the random access communications channel by one of the communications devices of the group, the other communications devices of the group are arranged to enter a listening state for detecting data transmitted to the group of devices via a packet data communications channel of the wireless access interface, and the other communications devices of the group wait a predetermined time after not detecting data transmitted via the packet data communications channel before attempting to transmit a random access burst on the random access communications channel. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification