Abstract:
PROBLEM TO BE SOLVED: To provide a wireless multi-cell communication system and method for controlling the distribution of multimedia broadcast services (MBMS).SOLUTION: A system includes at least one network, e.g., a Universal Terrestrial Radio Access Network (UTRAN), which distributes the MBMS to one or more wireless transmit/receive units (WTRUs). In one embodiment, the MBMS are activated and deactivated on the basis of whether periodic cell updates are provided for a particular cell. In another embodiment, MBMS transmission is terminated when receipt of the MBMS is confirmed. In yet another embodiment, the MBMS are segmented to reduce resources used by the network and/or the WTRUs during MBMS distribution.
Abstract:
PROBLEM TO BE SOLVED: To prevent transmission blocking in a HSUPA wireless communication system.SOLUTION: In a wireless communication system including at least one wireless transmit/receive unit (WTRU) and at least one Node-B (NB), a method and apparatus for preventing transmission blocking comprises triggering transmission of scheduling information (SI) when a medium access control-d (MAC-d) flow is stopped. The SI is transmitted when the triggering condition is met.
Abstract:
PROBLEM TO BE SOLVED: To provide a better signaling method for supporting advancement for high UL (UpLink) data rate in advanced HSPA (High Speed Packet Access).SOLUTION: A method and an apparatus for allocating resources comprise a step for scheduling a wireless transmit/receive unit (WTRU) which is requesting transmission by using non-persistent scheduling.
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless digital CDMA communication system which supports all types of voice and data communications while utilizing the minimum frequency bandwidth for each application.SOLUTION: A wireless digital CDMA communication system of the present invention efficiently allocates ISDN bandwidth in quick response to the requirement from subscribers. When a subscriber station unit activates, the system sets a channel, and generates a spread spectrum code necessary for supporting the maximum capacity channel requested by the subscriber station unit. The system will not reserve a part of the communication bandwidth until actually receiving request from the subscriber unit. Since a call setup such as allocation of spread spectrum code is made at the onset of a call from the subscriber station unit, the subscriber station unit immediately can access to a part of the frequency spectrum necessary for supporting a required specific application.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for limiting transport format combinations in an HSDPA system.SOLUTION: The method includes the steps of: having a plurality of E-TFC tables; identifying an E-TFC hole among blocked E-TFCs in each of the tables; receiving an RRC message which is to be used for UE to select an E-TFC and indicates the table from the plurality of E-TFC tables; and selecting the E-TFC from the identified table on the basis of at least one identified E-TFC hole.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for multi-cell coordination for multimedia broadcast multicast services (MBMS) in a wireless communication system.SOLUTION: An MBMS multi-cell coordination unit is provided to coordinate a plurality of evolved Node-Bs (eNodeBs) for transmission of MBMS data synchronously in multiple cells of the same single frequency network (SFN). The MBMS multi-cell coordination unit may be located in an access gateway or in an eNodeB. An MBMS multi-cell scheduling scheme may be preconfigured for the eNodeBs for synchronization. Alternatively, the eNodeBs may be synchronized dynamically.
Abstract:
PROBLEM TO BE SOLVED: To provide a system capable of transferring an existing session between two terminals that are involved with two systems and use two different IP addresses.SOLUTION: An apparatus and a method are disclosed in which Internet Protocol (IP) traffic can be transferred (i.e. handoff) between two different terminals operating according to two different technology standards in two different systems with two different IP addresses. For example, a session handoff can be made between a terminal in Wireless Local Area Network (WLAN) and a terminal in a 3GPP UMTS or between a terminal in CDMA2000 and a terminal in a 3GPP UMTS. These terminals can be either physically separate entities or logical entities that are encapsulated within a common enclosure.
Abstract:
PROBLEM TO BE SOLVED: To provide procedures of: mobility between an LTE macro-cell and an LTE HNB or between a legacy 3GPP macro-cell such as WCDMA(R) and a legacy 3GPP HNB when macro-cell coverage is available; mobility between HNBs; and mobility between LTE HNBs and legacy 3GPP RAT when the LTE macro-cell coverage is unavailable.SOLUTION: An embodiment indicates, to a WTRU, criteria for making a handoff decision and making a cell reselection decision when an HNB is detected in a mobile phone environment. The criteria include charging and other policies/settings and configurations. The WTRU confirms whether the detected HNB is a blacklisted HNB (390) or a preferred HNB (310), and then selects HNBs (340, 350, 360) according to priority based on the criteria if there is more than one HNB (330).
Abstract:
PROBLEM TO BE SOLVED: To resolve problems in the prior art, where explicit signaling to communicate beamforming information or precoding information from a transmitter to a receiver incurs large signaling overhead particularly for a large-size codebook and resultant incorrect effective channel response information or incorrect precoding information causes a significant bit error rate floor and/or a block error rate floor; and to provide efficient methods for obtaining accurate effective channel response information.SOLUTION: Transmission and decoding of resource blocks transmitted via a MIMO antenna having a plurality of transmit antennas is disclosed. Each of the RBs includes a plurality of resource elements. Each of the REs is reserved for one of a common reference signal associated with one of the transmit antennas, a dedicated reference signal including a single beamformed or single precoded pilot, a DRS including a composite beamformed or composite precoded pilot, and a data symbol.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for a No-TX mode for a wireless transmit/receive unit (WTRU) and Node B that suspends the transmission of power control updates and associated signaling over dedicated uplink and downlink channels.SOLUTION: Triggers and signals between the WTRU and Node B activate and disable a No-TX mode. A radio link is re-established to resume data transmission when the No-TX mode is disabled, and data may also be transmitted during defined transmission opportunities while in the No-TX mode.