摘要:
A base station includes a radio communication unit (82, 85) configured to wirelessly communicate with a mobile apparatus capable of communicating in both a first mobile communication system and a second mobile communication system and a network communication unit (83, 84) configured to communicate with a switching station in the first mobile communication system, and if a line setup instruction signal (Initial Context Setup Request) received at the network communication unit from the switching station is not due to initial access to the switching station by the mobile apparatus, the radio communication unit receives mobile apparatus capability information in the second mobile communication system (UE-UTRA-Capability) from the mobile apparatus after transmitting a line setup response signal (Initial Context Setup Response) to the switching station.
摘要:
Upon detecting an opportunity to release E-RABs related to mobile stations, a mobility management entity transmits a single E-RAB release information message that collectively specifies E-RABs to be released to a base station communicating with the mobile stations. Subsequently, upon receiving the E-RAB release information message, the base station transmits a single E-RAB release information acknowledge message to the mobility management entity. Upon receiving the E-RAB release information acknowledge message, the mobility management entity updates information related to the E-RABs so that the information indicates release of the E-RABs.
摘要:
In a method for managing cyclic shift codes used for reporting the CQI, when a new communication occurs between a base station and a mobile station, a cyclic shift code is allocated to the CQI report from the mobile station in accordance with a predetermined order of precedence. When the communication has ended or been disconnected, the cyclic shift code is released. In the allocating step, a cyclic shift code is allocated to the CQI report from the mobile station for the newly occurring communication, the allocated cyclic shift code having a precedence ranking that is lower than a precedence ranking of the allocated cyclic shift code allocated latest for the CQI report from another mobile station, being not used for CQI reports from other mobile stations, and having a highest precedence ranking in the predetermined order of precedence.
摘要:
A radio base station apparatus including a function for determining a transmission power, including: a neighbor cell detection unit configured to detect a neighbor cell that interferes with a target cell that the radio base station apparatus can form; a received power measurement unit configured to measure, for each neighbor cell detected by the neighbor cell detection unit, a received power from the neighbor cell; and a transmission power determination unit configured to calculate, for each band part that overlaps with a transmission band of the radio base station apparatus in transmission bands of each neighbor cell, a sum of received powers for neighbor cells having transmission bands each including the band part, and to determine an interference amount in the target cell based on the sum of received powers so as to determine the transmission power by using the interference amount.
摘要:
In a state where a mobile station UE is communicating with a radio base station S-eNB supporting "extended PDCP-SN, " the mobile terminal continues communications even if it performs a reconnection procedure with a radio base station T-eNB not supporting "extended PDCP-SN. " A mobile communication method according to the invention includes the steps of, when detecting RLF in the bearer in the above-described state, the mobile station UE resetting setting of "extended PDCP-SN" and establishing a bearer using "conventional PDCP-SN" by performing a reconnection procedure with a radio base station T-eNB not supporting "extended PDCP-SN."
摘要:
A message broadcast system for broadcasting messages to user devices includes a cell broadcast center and a base station, wherein the cell broadcast center includes an obtaining unit for obtaining a sender identifier from a message broadcast request, a first table associating the sender identifier with identifier information for identifying a message to be added to the message and corresponding to a priority for controlling the order of broadcast messages, a selecting unit for selecting an identifier information corresponding to the sender identifier, a generating unit for generating a message including the identifier information, and a transmission unit for transmitting the message to the base station; and the base station includes an obtaining unit for obtaining an identifier information included in a message from the cell broadcast center, a second table associating the identifier information with a priority for controlling the order of broadcast messages, a priority obtaining unit for obtaining the priority corresponding to the message identifier information and a broadcast controlling unit for controlling the order of broadcast messages based on the priority.
摘要:
A radio base station apparatus including a function for determining a transmission power, including: a neighbor cell detection unit configured to detect a neighbor cell that interferes with a target cell that the radio base station apparatus can form; a received power measurement unit configured to measure, for each neighbor cell detected by the neighbor cell detection unit, a received power from the neighbor cell; and a transmission power determination unit configured to calculate, for each band part that overlaps with a transmission band of the radio base station apparatus in transmission bands of each neighbor cell, a sum of received powers for neighbor cells having transmission bands each including the band part, and to determine an interference amount in the target cell based on the sum of received powers so as to determine the transmission power by using the interference amount.
摘要:
A radio base station determines at least any one type of subframe constituted of multiple system information subframes for sending system information to a mobile station, paging subframes for sending paging messages for the mobile station in idle mode, or on-duration subframes corresponding to on-durations at which the mobile station receives downlink control channel signals in discontinuous reception mode for the downlink control channel signals. The radio base station allocates, to the mobile station, inter-frequency measurement periods for inter-frequency measurement at the mobile station, while avoiding simultaneous occurrence of inter-frequency measurement periods and the subframes determined by the subframe determiner.