Abstract:
A multicarrier CDMA system allows the number of carrier frequencies supporting a connection to be dynamically varied. The packet stream is divided into one or more substreams depending on the selected number of carrier frequencies and each substream is transmitted on a corresponding carrier frequency. The number of carrier frequencies is selectively varied during transmission of said packet data.
Abstract:
Higher layer packet (HLP) framing information is transmitted across the air interface only as necessary, utilizing the Radio Link Protocol (RLP). In one embodiment, a new RLP control frame is transmitted between RLP data frames containing data from different HLP, demarking the boundary between the HLP. In another embodiment, a new RLP data frame contains framing information, and an indicator of that framing information. The new RLP data frame is transmitted only when necessary, e.g., when the RLP data frame includes a HLP boundary. When transmitting intermediate HLP fragments, conventional RLP data frames are used, wherein the entire payload is dedicated to user data, and the framing information is transmitted implicitly.
Abstract:
Peers in a Radio Link Protocol (RLP) communication channel negotiate the size of an inactive window in a receive queue. The window size may be a parameter included in the RLP_BLOB. The receive queue controller may accept the proposed size, or may return a different inactive window size. A sequence number in-range comparison operator, e.g., IN_RANGE (SEQ, LO, HI), is defined that takes a three sequence numbers as input and returns a Boolean indication whether one of the inputs is within the sequence number range delimited by the other two inputs. The comparison is modulo the sequence space. The receiver determines whether a received data frame is within the inactive window by passing the operator the sequence number of the data frame, the L_V(N) pointer less the active window size, and (LV_(N)−1). A negotiated inactive window allows for an active window that exceeds half of the sequence space, which may prevent transmitter queue stalls in high data rate applications.
Abstract:
A base station in a wireless communication network multi-codes a shared packet data channel using a continually changing set of spreading codes, and dynamically updates the transmission frequency of messages identifying the spreading codes to be used for that multi-coding based on tracking the net gain in data throughput for the shared channel that is obtained by transmitting such messages. In a 1xEV-DV network context, for example, a Walsh code in the defined Walsh code space that is not contiguous with the Walsh codes currently allocated to multi-coding the 1xEV-DV Forward Packet Data Channel (F-PDCH) generally remains unavailable for such use until an updated Walsh Mask Broadcast (WMB) message is transmitted to the mobile stations being served on the F-PDCH. The base station thus is configured to determine the frequency at which to send such messages and thereby make the unavailable codes available for multi-coding use.
Abstract:
A radio base station performs reverse link rate control in a wireless communication network by “stealing” bits on a forward common power control channel. The forward common power control channel is divided into a plurality of frames, with each frame including a plurality of power control groups and each power control group including a plurality of power control slots. The radio base station may dynamically select power control slots depending on user demand to be used for reverse link rate control.
Abstract:
A method for making a multilayer structure having macroscopic second order nonlinear optical properties is described. The resulting nonlinear optical structures made by the method are also described. The method includes the steps of contacting a substrate having ionic adsorption sites with a first charged polyion; ceasing contact of the substrate with the first charged polyion; and thereafter, contacting the substrate with a second charged polyion having a charge opposite to that of the first charged polyion, wherein at least one of the polyions includes a nonlinear optical chromophoric side chain.
Abstract:
Provisioning and access control for communication nodes involves assigning identifiers to sets of nodes where the identifiers may be used to control access to restricted access nodes that provide certain services only to certain defined sets of nodes. In some aspects provisioning a node may involve providing a unique identifier for sets of one or more nodes such as restricted access points and access terminals that are authorized to receive service from the restricted access points. Access control may be provided by operation of a restricted access point and/or a network node. In some aspects, provisioning a node involves providing a preferred roaming list for the node. In some aspects, a node may be provisioned with a preferred roaming list through the use of a bootstrap beacon.
Abstract:
Systems and methodologies are described that facilitate improving session initiation protocol based registration of a mobile device and an IP multimedia subsystem in wireless communications. The mobile device discovers one or more SIP servers (e.g., proxy call session control functions) that are available. The mobile device issues a ping message to each discovered server in parallel to determine reachability. Based at least in part on measured round trip times associated with the ping messages, the mobile device initiates registration procedures with at least one server.
Abstract:
Techniques to configure quality of service (QoS) for communication are described. An access terminal configures a first QoS profile prior to a call. This QoS profile is for a set of QoS parameters that provides certain QoS. The access terminal thereafter establishes (e.g., originates or terminates) a call with an access network. If the first QoS profile is appropriate for the call, then QoS is not reconfigured. However, the access terminal may determine that a second QoS profile is to be used for the call, e.g., based on a format or a rate set supported by a remote/other terminal for the call. The access terminal would then configure the second QoS profile during the call. The access terminal may exchange data in accordance with (a) the first QoS profile before the second QoS profile is configured and activated and (b) the second QoS profile after it is configured and activated.
Abstract:
Devices and methods are provided for facilitating selection and acquisition of an access point (AP) base station via implementation of a system selection file that may include a preferred roaming list (PRL), a public land mobile network (PLMN) database, or the like. The selection attempts may be limited to specific preferred systems, such as, for example, the AP base station. The system selection file includes identification parameters of the preferred systems. In one embodiment, the identification parameters include at least one of a system identifier (SID) and a network identifier (NID) for a given one of the systems.