摘要:
A synchronization control method in a communication system including a mobile station performing an intermittent reception and a base station, including: generating, at the base station, a synchronization request (S103), when data addressed to the mobile station arrives (S101); receiving, at the mobile station, the synchronization request from the base station (S103); transmitting, at the mobile station, feedback information, as a response to the synchronization request (S105); receiving, at the base station, the feedback information (S105); and measuring, at the base station, a signal propagation delay time by using a reception timing of the feedback information (S107).
摘要:
When a radio resource allocation channel transmitted from a radio base station (eNB) at a discontinuous reception timing satisfies a specific condition, a mobile station (UE) is configured not to reactivate a predetermined timer, even though the mobile station (UE) detects that the mobile station identifier allocated to the mobile station (UE) is included in the radio resource allocation channel transmitted from the radio base station (eNB), before the predetermined timer expires.
摘要:
A CDMA mobile communications system and its random access control method and base station are provided that can reduce the probability of failing to detect the preamble. A preamble detector (12) measures the signal-to-interference power ratio of a received preamble after RAKE combining, and makes a decision on whether to authorize a mobile station to transmit a message or not by comparing the detection result with the threshold value. Receiving from the preamble detector (12) the decision result indicating that the measurement value is equal to or greater than the threshold value, a CPU (14) causes a transmitter to transmit a transmission control signal authorizing a mobile station sending the preamble to transmit the message. In contrast, when the decision result indicates that the measurement value is less than the threshold value, the CPU (14) does not authorize the mobile station to transmit the message.
摘要:
A mobile communication method comprising the steps of: (A) transmitting, from any one of a core network apparatus and another radio base station to a radio base station, a location information reporting instruction providing an instruction to report location information on a mobile station (UE); (B) reporting, from the radio base station to the core network apparatus, the location information on the mobile station (UE), when the radio base station has received the location information reporting instruction, and when the mobile station (UE) has performed an intra base station handover from a first cell to a second cell, both of which are under control of the radio base station.
摘要:
A mobile communication system in which a relay node and a radio base station are connected via a radio bearer, wherein the relay node comprises: as a radio bearer function of setting the radio bearer between the relay node and the radio base station, a physical layer function; an MAC layer function provided as an upper layer function of the physical layer function; an RLC layer function provided as an upper layer function of the MAC layer function; and a PDCP layer function provided as an upper layer function of the RLC layer function, the relay node comprises: an IP layer function as an upper layer function of the radio bearer function; an SCTP layer function provided as an upper layer function of the IP layer function; and an X2AP layer function provided as an upper layer function of the SCTP layer function, the radio base station comprises: as a radio bearer function of setting the radio bearer between the radio base station and the relay node, a physical layer function; an MAC layer function provided as an upper layer function of the physical layer function; an RLC layer function provided as an upper layer function of the MAC layer function; and a PDCP layer function provided as an upper layer function of the RLC layer function, the radio base station comprises: an IP layer function as an upper layer function of the radio bearer function; an SCTP layer function provided as an upper layer function of the IP layer function; and an X2AP layer function provided as an upper layer function of the SCTP layer function, and a control signal relating to a handover process is configured to terminate between the X2AP layer function of the relay node and the X2AP layer function of the radio base station wherein the handover process is between the status of the mobile station communicating with the radio base station via the relay node and the status of the mobile station communicating with the radio base station.