摘要:
Methods, devices, and systems have various user equipment (UE) for reading multimedia broadcast and multicast service (MBMS) notifications via one or more paging indicators of a Paging Indication Channel (PICH). The paging indicators of the PICH functions as MBMS notification indicators, signaling the relevant UE to read the MBMS point-to-multipoint control channel (MCCH) for MBMS information, and thereby enabling the affected UE to configure themselves to receive the associated multimedia broadcast and/or multicast service.
摘要:
A system and method configures quality-of-service (QoS) in a segment of a network that has multiple segments with an intermediate device between the segments. The network may be a home network for the transmission of audio-video traffic streams between a media server or source, like a personal computer (PC), and a media renderer or sink, like a digital TV, with the intermediate device being a router, bridge or hub connected to its own network segment and located between the source and sink. One of the network devices contains a QoS parameter holder (QPH). After QoS has been configured in the source and sink and the traffic stream established, the intermediate device detects the traffic stream and determines that it needs to set up QoS. The intermediate device queries the QPH with a traffic stream identifier. The QPH finds the traffic descriptor that matches the traffic stream identifier and returns to the intermediate device the traffic descriptor that includes the QoS parameters. The intermediate device then uses the QoS parameters to configure QoS in its network segment.
摘要:
A method for conserving the power supply of an Orthogonal Frequency Division Multiplexing (OFDM) communications device is described. The location of control information within one or two of a plurality of symbols is obtained. A sleep mode is entered into. The one or two symbols that include the control information are monitored. A return to the sleep mode is executed.
摘要:
A system and method are provided for controlling bandwidth allocation in a wireless local area network (wLAN). The method comprises: expressing device bandwidth allocations in terms of a time base; in response to expressing the bandwidth allocation in terms of a time base, monitoring network communications; and, measuring the allocated bandwidths. The method may further comprise: establishing polling schedules in response to expressing the bandwidth allocation in terms of a time base; and, de-energizing devices in response to the polling schedules. Expressing device bandwidth allocations in terms of a time base includes establishing: an inter-transmission opportunity (TXOP) interval; and, a TXOP jitter. These fields are supplied in the IEEE 802.11e transmit specification (TSPEC). Then, de-energizing devices in response to the polling schedule includes disengaging transmission and receiving functions in the minimum TXOP intervals between polling events, where the minimum TXOP interval is the inter-TXOP interval minus the TXOP jitter.
摘要:
A method and apparatus employable in a wireless, packet-based network communication system for managing transmission-limit build-up performed by participating network BSS stations, whereby, when singular ones (one only) of these stations, during a given transmission budget beacon interval, are attempting to gain access to network transmission bandwidth, they are permitted to invoke an algorithm for rapid transmission-limit build-up. Such rapid build-up is based upon allowing such a station to begin its accessing process with an elevated, initial transmission limit which is created as a relatively high percentage (preferably about 80-percent) of the last prior beacon-announced network transmission budget. If more than one such currently non-transmitting stations are simultaneously attempting anew to gain network bandwidth access, rapid build-up is not permitted, thus to minimize an otherwise possible network communication traffic jam.
摘要:
Systems and methods are provided for receiving and transmitting an MPEG2 transport stream (TS) in a real-time protocol (RTP)/user datagram protocol (UDP)/Internet protocol (IP) packet. The receiving method comprises: receiving an IP packet via an IP network, having a variable transmission delay; accessing a timestamp carried in a RTP packet; linking the timestamp with a program clock reference (PCR) MPEG2TS carried in the RTP packet payload; and, using the timestamp to eliminate variable transmission delay jitter, associated with the PCR MPEG2TS. In one aspect of the method, the timestamp has a resolution of greater than 500 nanoseconds (ns), so that the variable transmission delay jitter, associated with the PCR MPEG2TS can be reduced to a jitter of less than 500 ns.
摘要:
A method and system for controlling discontinuous reception (DRX) in a mobile device in a wireless communications network that supports voice-over-internet-protocol (VoIP) and that uses an automatic repeat-request (ARQ) method, like a hybrid automatic repeat-request (HARQ) method, uses autonomous DRX control after initial VoIP traffic setup. If the mobile device transmits a negative-acknowledgement signal (NACK) indicating unsuccessful receipt of a VoIP packet, then it autonomously turns on a predetermined delay time later to receive the retransmission of the VoIP packet, where the predetermined delay time is related to the time for the base station to process the NACK and prepare the VoIP packet for retransmission. When the mobile device transmits or retransmits a VoIP packet, reception is deactivated, but is autonomously activated the predetermined delay time later to receive an acknowledgement signal (ACK) or NACK. VoIP packets may be transmitted from the mobile device the predetermined delay time before VoIP packets are transmitted from the base station. This alignment allows an ACK or NACK to be transmitted from the base station in the same transmission time interval (TTI) as a VoIP packet.
摘要:
A method and system for optimizing channel quality indicator (CQI) transmissions by mobile devices in a cellular network allows transmission of CQIs at a slower rate and with fewer bits during voice-over-internet-protocol (VoIP) sessions than during non-real-time (NRT) data transmissions. A VoIP transmission typically includes “talkspurt” periods, during which VoIP packets are transmitted, and silence periods, which start with a silence indication (SID) packet and continue with periodic SID packets until a VoIP packet is received. When the base station is transmitting NRT data, the mobile device transmits CQIs to the base station at a first rate, with each CQI having a first fixed number of bits. When the base station is transmitting VoIP to the mobile device, then during a talkspurt period, the mobile device may transmit CQIs to the base station at a second rate slower than the first rate, and each CQI may have a second fixed number of bits less than the first fixed number of bits. However, during a silence period, the mobile device does not transmit CQIs to the base station, and uplink channel resources allocated for the CQIs can be reallocated to other mobile devices.
摘要:
A method for conserving the power supply of an Orthogonal Frequency Division Multiplexing (OFDM) communications device is described. The location of control information within one or two of a plurality of symbols is obtained. A sleep mode is entered into. The one or two symbols that include the control information are monitored. A return to the sleep mode is executed.
摘要:
User equipment may receive configuration information indicating whether the user equipment provides feedback of channel quality indicator (CQI) information in virtual resource block mode or physical resource block mode. If the configuration information indicates that the user equipment provides feedback in virtual resource block mode, the user equipment may calculate the CQI information for virtual resource blocks. The user equipment may feed back the CQI information for the virtual resource blocks to a Node B.