Method of managing access to a random-access communication network
First Claim
1. A communication management method for a random access communication network, the method comprising:
- by a gateway of the random access communication network, dividing time intervals into time slots each associated with an access time slot during which a terminal can send an access request to the network, and of selected width greater than or equal to the duration of an access request and then divide those time intervals into sub-intervals including at least two consecutive time slots and prohibit the terminals from sending access requests during at least one of the access time slots associated with the time slots of each sub-interval at the same time as authorizing them to do so during non-prohibited access time slots,defining in each sub-interval a number, at least equal to the number of time slots that said sub-interval contains, of processing time windows offset in time and of width substantially equal to that of a time slot, anddeducing from the window to which a received access request belongs at least one access delay of the requesting terminal relative to a reference and then sending an acknowledgement message to that requesting terminal at a moment selected as a function of that access delay so that said requesting terminal can receive said acknowledgement message in a predefined acknowledgement time interval.
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Accused Products
Abstract
A device (D) is dedicated to communication management in a base station (SB) of a random access communication network. The device comprises processing means (MT) adapted i) to divide time intervals into time slots each associated with an access time slot during which a terminal (UE) is able to send an access request to the network and of width equal to the duration of an access request, ii) to divide said time intervals into sub-intervals (SI) including at least two consecutive time slots, iii) to designate in each sub-interval (SI) at least one prohibited time slot associated with a prohibited access time slot, iv) to define in each sub-interval (SI) a number, at least equal to the number of time slots that it contains, of windows (F) offset in time and of width equal to that of a time slot, and v), in the event of reception of an access request sent by a requesting terminal (UE), to deduce from the window (F) to which the access request belongs at least one access delay of the requesting terminal relative to a reference and then to determine from the access delay the time of sending an acknowledgement message to said requesting terminal (UE) so that it is able to receive it in a predefined acknowledgement time slot.
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Citations
31 Claims
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1. A communication management method for a random access communication network, the method comprising:
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by a gateway of the random access communication network, dividing time intervals into time slots each associated with an access time slot during which a terminal can send an access request to the network, and of selected width greater than or equal to the duration of an access request and then divide those time intervals into sub-intervals including at least two consecutive time slots and prohibit the terminals from sending access requests during at least one of the access time slots associated with the time slots of each sub-interval at the same time as authorizing them to do so during non-prohibited access time slots, defining in each sub-interval a number, at least equal to the number of time slots that said sub-interval contains, of processing time windows offset in time and of width substantially equal to that of a time slot, and deducing from the window to which a received access request belongs at least one access delay of the requesting terminal relative to a reference and then sending an acknowledgement message to that requesting terminal at a moment selected as a function of that access delay so that said requesting terminal can receive said acknowledgement message in a predefined acknowledgement time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 26, 27, 28, 29)
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13. A communication management device for a base station of a random access communication network, the communication management device comprising:
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a processing means which; divides time intervals into time slots each associated with an access time slot during which a terminal is able to send an access request to the network and of selected width greater than or equal to the duration of an access request, divides said time intervals into sub-intervals including at least two consecutive time slots, designates in each sub-interval at least one prohibited time slot associated with an access time slot during which the terminals are prohibited from sending their access requests to the network, defines in each sub-interval a number, at least equal to the number of time slots that said sub-interval contains, of processing time windows offset in time and of width substantially equal to that of a time slot, and in the event of reception of an access request sent by a requesting terminal, deduces from the window to which said access request belongs at least one access delay of the requesting terminal relative to a reference and then to determine from said access delay a time of sending an acknowledgement message to said requesting terminal so that said requesting terminal is able to receive said acknowledgement message in a predefined acknowledgement time slot; and a memory which stores the at least one access delay deduced by the processing means. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 30)
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25. A base station for a random access communication network, comprising a communication management device, wherein said communication management device comprises a processing means which:
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divides time intervals into time slots each associated with an access time slot during which a terminal is able to send an access request to the network and of selected width greater than or equal to the duration of an access request, divides said time intervals into sub-intervals including at least two consecutive time slots, designates in each sub-interval at least one prohibited time slot associated with an access time slot during which the terminals are prohibited from sending their access requests to the network, defines in each sub-interval a number, at least equal to the number of time slots that said sub-interval contains, of processing time windows offset in time and of width substantially equal to that of a time slot, and in the event of reception of an access request sent by a requesting terminal, deduces from the window to which said access request belongs at least one access delay of the requesting terminal relative to a reference and then to determine from said access delay a time of sending an acknowledgement message to said requesting terminal so that said requesting terminal is able to receive said acknowledgement message in a predefined acknowledgement time slot. - View Dependent Claims (31)
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Specification