Abstract:
An apparatus and method provide MAC logic enabling the use of two or more reverse link rate controls at the same time in one or more sectors of a radio base station. That enables the base station to control reverse link loading via reverse link rate control, while assigning mobile stations to the type of reverse link rate control best suited to their needs. For example, the base station MAC logic may implement both a common rate controller that generates per-sector rate control commands, and a dedicated rate controller that generates per-user rate control commands and assign mobile stations having relatively lax reverse link service needs to the common rate controller, while assigning mobile stations having more demanding reverse link service requirements to the dedicated rate control. More than two rate controls can be implemented, and exemplary choices include per-user, per-sector, per-group, and scheduled rate control in any combination.
Abstract:
A wireless communication network has radio resources for use to support calls over circuit switched (CS) and packet switched (PS) channels. The network uses such radio resources to first support CS calls and thereafter uses the leftover radio resources to support PS calls. The present invention provides method and apparatus that effectively schedule and support incoming CS calls based on frame-offset selection so as to maximize the leftover radio resources that could be used to support PS calls.
Abstract:
Techniques to configure quality of service (QoS) and utilize radio resources for a call in a WLAN are described. In an aspect, a station ensures that an access point in the WLAN is suitable for receiving service prior to performing registration to receive services via the WLAN. In another aspect, the station first requests for radio resources for traffic flows, then requests for radio resources for signaling flows, and sends signaling as best effort traffic if radio resources are not granted for the signaling flows. In yet another aspect, the station aggregates QoS for multiple applications and requests for radio resources based on the aggregated QoS. In yet another aspect, the station releases extra radio resources corresponding to the difference between the QoS granted by the WLAN and the QoS proposed by a remote terminal for the call. In yet another aspect, the station requests for the same QoS or lower from a new access point during handoff.
Abstract:
In general, this disclosure relates to the establishment of communication sessions between communication devices. In particular, this disclosure describes techniques that provide for quality of service (QoS) aware establishment of communication sessions. As an example, a communication device may attempt to reserve QoS for one or more codecs using a QoS reservation procedure corresponding to the access technology of an access network via which the communication device accesses a core network. The communication device selects one or more codecs to include in a call control message, such a Session Description Protocol (SDP) message, based on the QoS reservation and a QoS mode of the device.
Abstract:
A mobile communication network comprises a plurality of access nodes, wherein each access node allocates mobile station identifiers to mobile stations from an assigned group of mobile station identifiers. The mobile station identifiers in each group have a common property that identifies the corresponding access node. The mobile station identifier may be used, for example, to locate session information for a mobile station when a mobile station moves between access nodes.
Abstract:
A system and method of crawling at least one website comprising at least one URL includes maintaining a lookup structure comprising all of the URLs known to be on a website; calculating a hub score for each webpage of the website to be recrawled, wherein the hub score measures how likely the to be recrawled webpage includes links to fresh content published on the website; sorting all the to be recrawled pages by their hub scores; and crawling the to be recrawled pages in order from highest hub scores to lowest hub scores. The calculating comprises computing a first value equaling a percentage of a number of new relative URLs on the to be recrawled page; computing a second value equaling a percentage of a previous hub score of the to be recrawled page; and computing the hub score as a sum of the first and the second values.
Abstract:
The page monitoring interval of a mobile station is configured according to a known or expected paging event probability, such that the mobile station, when idle, uses lower (faster) monitoring intervals at higher paging event probabilities. Page monitoring interval control information, such as in the form of one or more paging slot cycle index values, is sent to the mobile station in a connection release message, or in an idle-state message. The transmitted information effectively tailors the page-monitoring interval of the mobile station to a known or expected paging event probability function (e.g., a probability curve). The information may specify a minimum interval, e.g., a minimum reduced slot cycle index value, to be used at a time corresponding to a highest paging event probability. Paging event probabilities may be known or estimated based on the application type (e.g., Push-to-Talk), or based on activity tracking (e.g., call histories).
Abstract:
Walsh codes are effectively allocated to better support calls in wireless communication networks having a shared high-speed packet data channel.
Abstract:
In a NAK-based window transmission protocol where the transmitter retains transmitted data frames in a retransmission queue, one or more transmitted data frames are discarded as the number of data frames approaches the available queue capacity. A message, such as a control frame, is transmitted to the receiver indicating which of the retained data frame copies were discarded. The queue stall avoidance mechanism operates at the transmitter, which has direct knowledge of its queue utilization. By avoiding a queue stall, the transmitter may continue to receive incoming data packets for transmission to a receiver. That is, the transmitter can be configured to prioritize sending new data over retaining previously transmitted data for support of data retransmissions.
Abstract:
Techniques to configure quality of service (QoS) and utilize radio resources for a call in a WLAN are described. In an aspect, a station ensures that an access point in the WLAN is suitable for receiving service prior to performing registration to receive services via the WLAN. In another aspect, the station first requests for radio resources for traffic flows, then requests for radio resources for signaling flows, and sends signaling as best effort traffic if radio resources are not granted for the signaling flows. In yet another aspect, the station aggregates QoS for multiple applications and requests for radio resources based on the aggregated QoS. In yet another aspect, the station releases extra radio resources corresponding to the difference between the QoS granted by the WLAN and the QoS proposed by a remote terminal for the call. In yet another aspect, the station requests for the same QoS or lower from a new access point during handoff.