Mapping information in wireless communications systems
First Claim
1. A method of mapping information, in a wireless communications system, between logical channels for communications services and physical channels of the wireless communications system, the physical channels including at least one shared channel for communications with each of a plurality of terminals in a time division multiplexed (TDM) manner, and dedicated channels each assigned to a respective terminal for a relatively long period, the method comprising the steps of:
- for information of the logical channels relating to the dedicated channels, mapping the information between the logical channels and data units for communication on the respective dedicated channels in a first multiplexing sublayer of a medium access control (MAC) function; and
for information of the logical channels relating to the shared channels, mapping the information between the logical channels and a shared transport channel in said first multiplexing sublayer of the MAC function, and mapping the information between the shared transport channel and the shared physical channel in a second multiplexing sublayer of the MAC function.
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Accused Products
Abstract
A wireless communications system includes a shared TDM data channel for communications in different time slots with respective mobile stations (MSs), as well as dedicated channels. A first medium access control (MAC) multiplexing sublayer, provided in a base station controller, maps information of logical channels for communications services to the communications channels. A second MAC multiplexing sublayer maps information, mapped to the shared data channel in the first MAC multiplexing sublayer, to respective data units for communication in respective TDM time slots of the shared channel. The second MAC multiplexing sublayer handles scheduling, adaptive modulation and coding, and automatic retransmission of information on the shared data channel, as well as shared control channels for the shared data channel and channel quality feedback and data acknowledgement channels from the MSs.
145 Citations
23 Claims
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1. A method of mapping information, in a wireless communications system, between logical channels for communications services and physical channels of the wireless communications system, the physical channels including at least one shared channel for communications with each of a plurality of terminals in a time division multiplexed (TDM) manner, and dedicated channels each assigned to a respective terminal for a relatively long period, the method comprising the steps of:
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for information of the logical channels relating to the dedicated channels, mapping the information between the logical channels and data units for communication on the respective dedicated channels in a first multiplexing sublayer of a medium access control (MAC) function; and
for information of the logical channels relating to the shared channels, mapping the information between the logical channels and a shared transport channel in said first multiplexing sublayer of the MAC function, and mapping the information between the shared transport channel and the shared physical channel in a second multiplexing sublayer of the MAC function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a wireless communications system providing a plurality of channels for communication of information on a forward link from at least one base station to a mobile station (MS), said channels including a time division multiplexed (TDM) packet data channel for communications in different TDM time slots with respective MSs whereby the channel is shared for a plurality of MSs, and channels for communication of information in a dedicated manner each to a MS assigned to the channel, a method of mapping information between logical channels for communications services and said communications channels, the method comprising the steps of:
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in a first medium access control (MAC) multiplexing sublayer, mapping information of the logical channels to the communications channels in accordance with the respective communications services of the logical channels; and
in a second MAC multiplexing sublayer, mapping information, which is mapped to the shared packet data channel in the first MAC multiplexing sublayer, to respective data units for communication in respective TDM time slots of the packet data channel. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A wireless communications system comprising a base station controller (BSC), a plurality of base stations (BSs) for communication with the BSC, and a plurality of terminals for communication with the BSs via wireless communications channels including a time division multiplexed (TDM) packet data channel for communications in different TDM time slots from a BS to respective terminals, and channels for communication of information from a BS in a dedicated manner each to a MS assigned to the channel, the system including apparatus for mapping information between logical channels for communications services and the wireless communications channels, the apparatus comprising a first medium access control (MAC) multiplexing function arranged to map information of the logical channels to the wireless communications channels in accordance with the respective communications services of the logical channels;
- and a second MAC multiplexing function arranged to map information, which is mapped to the TDM packet data channel in the first MAC multiplexing function, to respective data units for communication in respective TDM time slots of the packet data channel.
- View Dependent Claims (18, 19, 20, 21, 22, 23)
Specification