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Claims  |
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What is claimed is:
1. A radio communications system, comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot, a
and wherein said at least one second slot is comprised of a plurality of
mutually orthogonal sub-slots.
2. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said messages are acknowledgement messages generated by a user
transceiver and transmitted by said transmitting means in response to
receiving communications traffic information from said radio channel.
3. A radio communications system as set forth in claim 2, wherein said
messages further comprise channel allocation request messages generated by
a user transceiver and transmitted by said transmitting means in response
to the user transceiver seeking to establish communications with said
central transceiver.
4. A radio communications system as set forth in claim 2, wherein m is
equal to 1.ltoreq.m.ltoreq.10.
5. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said messages are acknowledgement messages generated by a user
transceiver and transmitted by said transmitting means in response to an
error that occurs while receiving communications traffic information from
said radio channel.
6. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
wherein said messages are acknowledgement messages generated by a user
transceiver and transmitted by said transmitting means in response to
receiving communications traffic information from said radio channel,
and wherein said at least one second slot is temporally divided into a
plurality of sub-slots.
7. A radio communications system as set forth in claim 6, wherein said at
least one second slot is not pre-assigned to any of said plurality of user
transceivers.
8. A radio communications system as set forth in claim 6, wherein said
central transceiver is a base station of a digital cellular communications
system, and wherein at least some of said plurality of user transceivers
are mobile radiotelephones.
9. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said at least one second slot is frequency divided into a
plurality of sub-slots.
10. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said at least one second slot is code divided into a plurality
of sub-slots.
11. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said at least one second slot is divided into a plurality of
sub-slots by a bit sequence that is assigned to individual ones of user
transceivers to transmit during said at least one second slot, each of
said assigned bit sequences being one of mutually orthogonal and
substantially orthogonal to other assigned bit sequences.
12. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said at least one second slot is divided into a plurality of
sub-slots by a spreading code that is assigned to individual ones of user
transceivers to transmit during said at least one second slot, each of
said assigned spreading codes being one of mutually orthogonal and
substantially orthogonal to other assigned spreading codes.
13. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot, and
wherein said transmitting means of each of said user transceivers transmits
a radio signal with a first bandwidth during an assigned one of said first
time slots, and transmits a radio signal with a second bandwidth during
said at least one second slot, and wherein said second bandwidth is
narrower than said first bandwidth.
14. A radio communications system comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit the message during said at least one second slot,
and wherein said central transceiver is comprised of a receiver; an
equalizer means having input coupled to an output of said receiver for
equalizing a transmission received from a user transceiver during one of
said plurality of first time slots; and a plurality of correlator means
individual ones of which have an input coupled said output of said
receiver for simultaneously detecting a plurality of messages received
from a plurality of user transceivers during said at least one second time
slot.
15. A radio communications system, comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
wherein said transmitting means of multiple ones of said user transceivers
transmit a channel allocation request message during said at least one
second slot; and
wherein said transmitting means of one of said user transceivers transmits
over the second radio channel, during a second slot, an acknowledgement
message to the central transceiver in response to one of said user
transceiver receiving communications traffic information from the first
radio channel and said user transceiver detecting an error that occurs
while receiving communications traffic information from the first radio
channel.
16. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n, said transmitting
means of said plurality of user transceivers also transmitting
acknowledgement messages during said at least one second slot in response
to receiving communications traffic information from said first radio
channel;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said at least one second slot is temporally divided into a
plurality of sub-slots.
17. A radio communications system as set forth in claim 16, wherein m is
equal to 1.ltoreq.m.ltoreq.10.
18. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said at least one second slot is frequency divided into a plurality
of sub-slots.
19. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said at least one second slot is code divided into a plurality of
sub-slots.
20. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said at least one second slot is divided into a plurality of
sub-slots by a bit sequence that is assigned to individual ones of user
transceivers to transmit during said at least one second slot, each of
said assigned bit sequences being one of mutually orthogonal and
substantially orthogonal to other assigned bit sequences.
21. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said at least one second slot is divided into a plurality of
sub-slots by a spreading code that is assigned to individual ones of user
transceivers to transmit during said at least one second slot, each of
said assigned spreading codes being one of mutually orthogonal and
substantially orthogonal to other assigned spreading codes.
22. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit a channel allocation request message during said at
least one second slot,
wherein said transmitting means of each of said user transceivers transmits
a radio signal with a first bandwidth during an assigned one of said first
time slots, and transmits a radio signal with a second bandwidth during
said at least one second slot, and wherein said second bandwidth is
narrower than said first bandwidth.
23. A radio communications system comprising:
at least one base station comprising means for transmitting information
over a first radio channel and for receiving information over a second
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the second radio channel and for receiving information
over the first radio channel, the information being transmitted by each of
said plurality of user transceivers in a bit serial digital format;
wherein at least said second radio channel is a time division, multiple
access radio channel characterized by a plurality of recurring frames,
each of said frames comprising a plurality of equal length slots having a
duration that is selected for enabling up to n bits of data to be
transmitted to the base station from said transmitting means of a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said frame is comprised at least one second slot that is not
pre-assigned to any of said plurality of user transceivers;
wherein said transmitting means of said plurality of user transceivers
transmit a channel allocation request message to said base station during
said at least one second slot, the transmitted channel allocation request
message comprising up to m bits of data, where m<n; and wherein said
transmitting means of multiple ones of said user transceivers transmit a
channel allocation request message during said at least one second slot,
wherein said base station is comprised of a receiver; an equalizer means
having input coupled to an output of said receiver for equalizing a
transmission received from a user transceiver during one of said plurality
of first time slots; and a plurality of correlator means individual ones
of which have an input coupled to said output of said receiver for
simultaneously detecting a plurality of messages received from a plurality
of user transceivers during said at least one second time slot.
24. A method for operating a radio communications system, comprising the
steps of:
providing at least one central transceiver comprising means for
transmitting information over a first radio channel and for receiving
information over a second radio channel;
providing a plurality of user transceivers each comprising means for
transmitting information over the second radio channel and for receiving
information over the first radio channel, the information being
transmitted by each of the plurality of user transceivers in a bit serial
digital format;
partitioning at least said second radio channel into a plurality of
recurring frames, each of the frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
pre-assigning individual ones of a plurality of first slots to individual
ones of the plurality of user transceivers for conveying communications
traffic information;
simultaneously transmitting a plurality of messages to the central
transceiver from individual ones of a plurality of the user transceivers
during at least one second slot, the transmitted messages each comprising
up to m bits of data, where m<n; and
transmitting during a second slot an acknowledgement message to the central
transceiver in response to one of a user transceiver receiving
communications traffic information from the first radio channel and a user
transceiver detecting an error that occurs while receiving communications
traffic information from the first radio channel.
25. A radio communications system, comprising:
at least one central transceiver comprising means for transmitting
information over a radio channel and for receiving information over the
radio channel; and
a plurality of user transceivers each comprising means for transmitting
information over the radio channel and for receiving information over the
radio channel, the information being transmitted by each of said plurality
of user transceivers in a bit serial digital format;
wherein said transmitting means of at least said plurality of user
transceivers utilize the radio channel for transmission as a time
division, multiple access radio channel characterized by a plurality of
recurring frames, each of said frames comprising a plurality of equal
length slots having a duration that is selected for enabling up to n bits
of data to be transmitted to the central transceiver from a user
transceiver;
wherein each user transceiver further comprises means for receiving a
pre-assignment of an individual one of a plurality of first slots for
conveying communications traffic information;
wherein said transmitting means of said plurality of user transceivers
transmit a message to said central transceiver during at least one second
slot, the transmitted message comprising up to m bits of data, where m<n;
and wherein said transmitting means of multiple ones of said user
transceivers transmit the message during said at least one second slot,
wherein said messages are acknowledgement messages generated by a user
transceiver and transmitted by said transmitting means in response to an
error that occurs while receiving communications traffic information from
said radio channel, and wherein said at least one second slot is
temporally divided into a plurality of sub-slots. |
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