A method of communication at a central coordinator communication device in a wireless communication network characterised by comprising: during a polling period, transmitting by the central coordinator a plurality of poll request frames, each poll request frame individually directed to a different one of a plurality of devices (130; 140; 150) using beamforming techniques, wherein each poll request frame of the plurality of poll request frames includes a poll response time offset value that is different to a poll response time offset value in each of the other of the plurality of poll request frames; during the polling period, and at a time indicated by a first of the plurality of poll request frames wherein said first of the plurality of poll request frames was individually directed to a first device, directly receiving at the central coordinator a poll response frame from the first device of the plurality of devices (130; 140; 150), the poll response frame including a channel bandwidth allocation request to communicate with a second device of the plurality of devices (130; 140; 150); during a grant period, subsequent to the polling period, dynamically allocating at the central coordinator a channel time according to the channel bandwidth allocation request, wherein the allocating of the channel time includes directly transmitting to the first and second devices grant frames granting a scheduled period for direct communication between the first and second devices; and in response to receiving a bandwidth truncating message from the first device during the scheduled period for direct communication, truncating at the central coordinator the scheduled period by: obtaining knowledge on a channel time usage; and transmitting a polling grant frame with a requested channel time to any other devices in the wireless communication network other than the first and second devices according to a current traffic requirements of a channel, if the central coordinator has knowledge of communications needs of the other devices; wherein the first device is defined as the transmitter on the link between the first and the second device. during a polling period, transmitting by the central coordinator a plurality of poll request frames, each poll request frame individually directed to a different one of a plurality of devices (130; 140; 150) using beamforming techniques, wherein each poll request frame of the plurality of poll request frames includes a poll response time offset value that is different to a poll response time offset value in each of the other of the plurality of poll request frames; during the polling period, and at a time indicated by a first of the plurality of poll request frames wherein said first of the plurality of poll request frames was individually directed to a first device, directly receiving at the central coordinator a poll response frame from the first device of the plurality of devices (130; 140; 150), the poll response frame including a channel bandwidth allocation request to communicate with a second device of the plurality of devices (130; 140; 150); during a grant period, subsequent to the polling period, dynamically allocating at the central coordinator a channel time according to the channel bandwidth allocation request, wherein the allocating of the channel time includes directly transmitting to the first and second devices grant frames granting a scheduled period for direct communication between the first and second devices; and in response to receiving a bandwidth truncating message from the first device during the scheduled period for direct communication, truncating at the central coordinator the scheduled period by: obtaining knowledge on a channel time usage; and transmitting a polling grant frame with a requested channel time to any other devices in the wireless communication network other than the first and second devices according to a current traffic requirements of a channel, if the central coordinator has knowledge of communications needs of the other devices; wherein the first device is defined as the transmitter on the link between the first and the second device. obtaining knowledge on a channel time usage; and transmitting a polling grant frame with a requested channel time to any other devices in the wireless communication network other than the first and second devices according to a current traffic requirements of a channel, if the central coordinator has knowledge of communications needs of the other devices; wherein the first device is defined as the transmitter on the link between the first and the second device.