Abstract:
An apparatus, system, and method efficiently manage reverse link communication in a communication system having geographically distributed base stations. A base station functioning to at least one mobile station as a non-serving active base station estimates an expected coupled load due to the at least one mobile based on a previous total coupled load. The base station determines a total available capacity based on the difference between the total capacity of the base station and the estimated expected coupled load. The base station allocates reverse link resources to other mobile stations served by the base station so as not to exceed the total available capacity. Since the allocation of reverse link channels resources are controlled directly by the base station, delays due to communications with a central controller are eliminated. As a result, adverse effects of load scheduling based on obsolete reverse channel information are minimized.
Abstract:
Various methods and apparatuses for beacon transmission in an ad-hoc peer-to-peer network are disclosed. In one aspect, an apparatus for communication is disclosed, the apparatus comprising a processing system configured to sense a channel during a first period comprising at least a first portion of a beacon transmission period and select, based on the sensing, a second period comprising at least a second portion of a beacon transmission period; and a transmitter configured to transmit one or more beacons during the second period.
Abstract:
A method for wireless communications is provided that includes receiving a plurality of packets using a first radio link from an apparatus; reconstructing an index for the plurality of packets for use in a second radio link; determining reception state information indicating whether each packet in the plurality of packets has been received correctly; and receiving additional packets based on the index and the reception state information. Apparatuses for performing the methods are also disclosed.
Abstract:
A method for wireless communications is provided that includes generating an index for a plurality of packets for use in a first radio link for transmission to an apparatus; transmitting the plurality of packets using a second radio link to the apparatus; determining transmission state information indicating whether each packet in the plurality of packets have been received by the apparatus; and transmitting additional packets based on the index and the transmission state information. Apparatuses for performing the methods are also disclosed.
Abstract:
Aspects of the present disclosure propose a method for determining preferred transmit and receive antenna patterns of a wireless device with respect to another wireless device. The method generally includes determining the beamforming or calibrating coefficients corresponding to the preferred transmit and receive antenna patterns of a wireless device iteratively.
Abstract:
Techniques for performing duplicate detection and re-ordering for a HARQ transmission are described. For duplicate detection, a receiver determines whether a decoded packet x for an ARQ channel y is a duplicate packet based on packet x and a prior decoded packet for ARQ channel y. For re-ordering, the receiver determines whether an earlier packet is still pending on any other ARQ channel based on prior decoded packets for the ARQ channels and forwards packet x only if there are no pending earlier packets. There are no pending earlier packets on another ARQ channel z if (1) a decoded packet was received on ARQ channel z at a designated time or later or (2) a decoded packet was not received on ARQ channel z within a time window from current time.
Abstract:
An apparatus, system, and method efficiently manage reverse link communication in a communication system having geographically distributed base stations. A base station functioning to at least one mobile station as a non-serving active base station estimates an expected coupled load due to the at least one mobile based on a previous total coupled load. The base station determines a total available capacity based on the difference between the total capacity of the base station and the estimated expected coupled load. The base station allocates reverse link resources to other mobile stations served by the base station so as not to exceed the total available capacity. Since the allocation of reverse link channels resources are controlled directly by the base station, delays due to communications with a central controller are eliminated. As a result, adverse effects of load scheduling based on obsolete reverse channel information are minimized.
Abstract:
Techniques for efficient signaling to and from a plurality of mobile stations are disclosed. In one embodiment, a subset of mobile stations may be allocated a portion (350) of the shared resource with one or more individual access grants (370), another subset may be allocated a portion of the shared resource with a single common grant (370), and yet another subset may be allowed to use a portion of the shared resource without any grant. In another embodiment, an acknowledge and continue command is used to extend all or a subset of the previous grants without the need for additional requests and grants, and their associated overhead. In one embodiment, a traffic to pilot ratio (T/P) is used to allocate a portion of the shared resource, allowing a mobile station flexibility in selecting its transmission format based on T/P.
Abstract:
A method and apparatus for determining multilevel scheduling of a reverse link communication. An embodiment includes estimating capacity on the reverse link based on the sector load. An embodiment includes estimating load contribution based on an estimated signal-to-noise ratio. An embodiment includes estimating capacity available to schedule based on a ratio of measured other-cell interference over thermal noise, and based on sector load. An embodiment includes a method of distributing sector capacity across a base station (BS) and a base station controller (BSC). An embodiment includes determining priority of a station based on the pilot energy over noise plus interference ratio, the soft handoff factor, the fairness value, and the fairness factor a.
Abstract:
Techniques for power control of serving and non-serving base stations are disclosed (104). In one aspect, power control commands for a plurality of base stations (104) are combined to form a single command to control the plurality of remote stations (740). In another aspect, an "Or-of-up" rule is used to combine the power control commands. In yet another aspect, a channel quality indicator is used to power control a serving base station (730). Various other aspects are also presented. These aspects have the benefit of providing efficient power control between a mobile station and both serving and non-serving base stations, thus avoiding excessive interference and increasing capacity.