Abstract: A method and apparatus for scheduling forward data link transmissions in CDMA/HDR networks. An access point that services a plurality of access terminals using corresponding forward communication links calculates a scheduling parameter for each of the corresponding forward communications links and access terminals as a function of a plurality of operating parameters.

Abstract: A base station, mobile station, and/or other terminal device includes physical layer (layer 1) protocol and link layer (layer 2) protocol that both include automatic retransmission request (ARQ) operations. The physical layer and link layer include enhancements that interact with one another to cause the link layer to inhibit ARQ operations while error recovery operations are pending at the physical layer. A transmitter packages link layer packet data units into physical layer frames and transmits the physical layer frames. A receiver responds to indicate either successful or unsuccessful transmission. The transmitting physical layer waits for the response and initiates error recovery operations when required. The receiving link layer, when it detects lost data packets, inhibits its ARQ operations to allow physical layer error recovery operations to complete.

Abstract: The present invention relates to an improved wireless communications system capable of efficiently transmitting smaller-sized data packets (e.g. 10 to 20 byte length) that are frequently delivered (e.g. every 10 to 20 msec.) to mobile nodes on the communications system, such as voice communications. Because an uncompressed TCP/IP or UDP/IP header length is disproportionally large compared to the smaller-sized data packets, the bandwidth on the backhaul connection between the base station controller unit (BSC) and the base transceiver station (BTS) is not being utilized as efficiently as possible. The present invention optimizes the transmission of information packets on the backhaul connection by using an IP Adaptation Layer (IPAL) protocol to map the user connections, eliminate the large header on information packets having smaller-sized data packet sizes, and concatenating the data packets into an IPAL information packet for tunneling on the backhaul connection.

Abstract: To communicate in a press-to-talk (PTT) session, a message for requesting a right to talk in the PTT session is sent over a wireless link between a mobile station and a base station system. The message for requesting the right to talk in the PTT session is sent in wireless signaling over the wireless link. An acknowledgment of the wireless signaling carrying the message is received, with the acknowledgment sent by the base station system in response to the control signaling. An indication is provided at the mobile station of the right to talk in response to the acknowledgment.

Abstract: To communicate information relating to an application over a wireless link, application control information and application data information are communicated over the wireless link between a mobile station and a base station system. The application data information is communicated over a traffic flow over the wireless link, and the application control information is communicated in a wireless control message carried in wireless signaling associated with the traffic flow.

Abstract: The present invention provides for a scheduling scheme to be used with respect to a given mobile station. It is determined whether the given mobile station is or is not in soft-handoff. This is performed through examining a reduced active set. The reduced active set is based upon the active set, and the selection of the reduced active set includes considerations such as received reverse link channel signal strength. If the mobile station is in soft hand-off or with reduced active set size of greater than one, congestion control scheduling of reverse link communications from the given mobile station is utilized, using a data rate set by the congestion control of the reverse link channel. If the mobile station is not in soft-handoff or with reduced active set size of one, explicit scheduling of the reverse link communications from the given mobile station is utilized, using a data rate set by the explicit data rate control of the reverse link channel.

Abstract: A method and apparatus for load balancing in CDMA/HDR networks. An access terminal is operably coupled to a plurality of access points. The access terminal monitors the quality of the forward communication links between the access terminal and the access points. The access terminal also monitors the capacity utilization of the access points. The access terminal then requests data to be transmitted to the access terminal from a selected access point as a function of the monitored quality of the forward communication links and the capacity utilizations.

Abstract: A base station controller includes circuitry for determining whether a transmitter is transmitting in a DTX mode or operation for a supplemental channel in a CDMA network. The invention includes the steps of determining frame quality metrics for data received on a fundamental and a supplemental channel. If the frame quality metric is good, meaning that the number of errors is below a defined threshold, on the supplemental channel, then the mobile station is not, by definition, within a DTX mode of operation. However, if each of the base stations that are on the active list of base stations for the mobile station report that the mobile station frame quality metric is not below or within a specified threshold, then the base station performs a calculation to determine whether the mobile station is in a DTX mode of operation or is transmitting a null set.

Abstract: System components of cellular wireless networks are shared during and after a mobile station handover from a first cellular wireless network (system A) to a second cellular wireless network (system B). According to one aspect, layer 2/3 call control functions are anchored in a base station controller (BSC) of system A, even after a data communication is handed over from system A to system B. According to another aspect, a link layer supporting the data communication is anchored in the BSC of system A servicing the data communication. In this case, the BSC of system A interfaces with a serving BTS of system B to service the ongoing data communication. According to still another aspect, the link layer is handed over to system B but the link layer of system B continues to use a link layer transmit buffer of system A that remains in the servicing BSC of system A.

Abstract: In code division multiple access communication systems, there are three levels for updating locations of dormant mobile stations (MSs) and setting up fast call. In sector and are levels, the dormant MS send a layer 2 message containing a message type and MS identifier to a base transceiver station (BTS). Since the message is associated with the sector where the MS is located, the network is aware of the MS's location from the updated location. The dormant MS sends to the BTS a reconnect message containing a message type and an MS identifier. The MS's dormant to active state transition is initiated by the MS. In the communication network, sub-packet zone ID is broadcasted in the overhead message. The MS reports its location change on R-CSCH and the network with the BSC level control can page the MS within the zone where the MS sends the report.

Abstract: A base station, mobile station, and/or other terminal includes physical layer (layer 1) protocol and link layer (layer 2) protocol enhancements that interact with one another to cause the link layer protocol to inhibit is ARQ operations for data blocks having missing data packets that are still pending at the physical layer. A mobile station (or base station) receives a data packet from a base station across a wireless link. The physical layer then determines, a number, N, of data packets pending with its physical layer Automatic Retransmission reQuest (ARQ) operations. The physical layer then passes the data packet and the number, N, to a link layer operating on the mobile station. The link layer then modifies its ARQ operations based upon the number, N, of data packets pending with the physical layer ARQ operations. The link layer inhibits ARQ operations for data blocks missing data packets that are still pending with the physical layer.

Abstract: A system determines an optimal set of base transceiver sets that are to transmit data over supplemental channels to a mobile station. A mobile station transmits periodic signal strength measurement message to rank the pilot signal strengths being received from the plurality of base station transceiver systems. Whenever the number of fundamental channel sectors that are active exceeds the maximum number of active supplemental channel sectors, periodic pilot strength measurement messages are transmitted by the mobile station. To improve resource usage, periodic pilot strength measurement messages are not transmitted as often as required to insure that the active supplemental channel sectors are the ones from which the strongest signals are received by the mobile station. Rather, a combination of periodic pilot strength measurement messages and calculated reverse link signal strength over spectral noise density values are used.

Abstract: In a wireless communications system, after a high data rate user is admitted and a supplemental channel is assigned to the user, a control message is sent to a receiver to communicate for power ramp-up and ramp-down profiles. The control message contains parameters of a data rate, a starting time and a duration of time as group in assigned fields in the message which is provided by a control signal source. In response to the control message, a controller provides a rate controllable signal with reference to the parameters of the control message to a data encoder. A bursty input data stream is fed to a buffer. The data encoder withdraws the data from the buffer in response to the rate controllable signal. The bit rate transitions in the bursty input data stream are smoothed with reference to the parameters. There is provided an output data stream having smoother data rate transitions than the input data stream.

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.

Abstract: A method and system is disclosed for admitting a voice call while a mobile station (MS) is engaging in a data call in a telecommunication network. First, a predetermined message is sent from a base station (BS) to the MS prohibiting the MS from initiating a data call for a predetermined period of time after receiving the predetermined message. The BS then releases a communication channel to be used for the voice call, and initiates the voice call, and the data call is reconnected after either voice call is completed.

Abstract: In a communication system, physical-layer frames for transmission over the physical layer are assembled from link-layer protocol data units (PDU's) by combining several PDU's into a variable-length first block, and providing the first block with an error detection and/or correction code such as a CRC. The first blocks are mapped into fixed-length second blocks, including repetitive copies of the first blocks if space permits. The second blocks are mapped into physical-layer frames, including repetitive copies of the second blocks if space permits. After reception of the frames, the replication enhances the probability of recovering correct PDU's as verified by the error detection and correction codes.

Abstract: A method and system applicable within a mobile transmission system for adaptively allocating a downlink data rate to an access terminal to compensate for channel fading. In accordance with the method of the present invention a downlink data rate selected in accordance with a determined signal-to-noise level, wherein the downlink data rate is associated with a specified signal-to-noise threshold to achieve a specified packet error rate. Next, a packet is transmitted to an access terminal at the selected downlink data rate. In response to successfully decoding the packet at the access terminal, the signal-to-noise threshold specified for the selected downlink data rate is decreased such that subsequent data rate selections are adaptively maximized. Responsive to a packet decoding error, the signal-to-noise threshold is abruptly increased to maintain the specified packet error rate.

Abstract: A Data Link Control protocol for 3G wireless communication system for direct support for network layer protocols, e.g. the Internet Protocol (IP), is provided. The Link Layer disclosed comprises a Link Access Control (LAC) sublayer and a Medium Access Control (MAC) sublayer. At a transmit end of the wireless system, a plurality of Quality of Service (QoS) data planes are created to directly support the IP QoS. Each QoS data plane is optimized to handle QoS requirements for a corresponding Class of Service (CoS). Data packets received at the LAC sublayer are directed to a QoS data plane according to the particular QoS information they contain and processed according to the particular QoS requirement to generate variable size LAC frames. The variable size LAC frames are transmitted to the MAC sublayer for generating radio link protocol data units (RLP PDUs) to be transmitted to a receiving end.

Abstract: A high data rate active set of base stations services high data rate forward link transmissions for a mobile station. Membership of the high data rate active set of base stations is determined via interaction with legacy standard operations that define a legacy standard active set of base stations for the mobile station. The high data rate forward link active set of base stations may be a subset of the legacy standard active set of base stations. The high data rate forward link active set of base stations may correspond directly to a reduced active set of base stations according to the legacy standard operations, e.g., reduced active set. According to another operation, access to newly added base stations to the high data rate forward link active set of base stations is precluded until the newly added base station is available to support forward link transmissions.

Abstract: A base station controller includes circuitry for determining whether a transmitter is transmitting in a DTX mode or operation for a supplemental channel in a CDMA network. The invention includes the steps of determining frame quality metrics for data received on a fundamental and a supplemental channel. If the frame quality metric is good, meaning that the number of errors is below a defined threshold, on the supplemental channel, then the mobile station is not, by definition, within a DTX mode of operation. However, if each of the base stations that are on the active list of base stations for the mobile station report that the mobile station frame quality metric is not below or within a specified threshold, then the base station performs a calculation to determine whether the mobile station is in a DTX mode of operation or is transmitting the mobile set.