摘要:
A mobile communication method in a mobile communication system including a plurality of radio access technologies, the mobile communication method comprising the steps of notifying, from a mobile station to an access node in a first radio access technology of a target for connection, a desired call type for communication, notifying, from a mobile exchange station in the first radio access technology to the access node in the first radio access technology, a radio access capability of the mobile station, determining, at the access node in the first radio access technology, whether or not a radio access technology of a target for connection of the mobile station is to be switched from the first radio access technology to a second radio access technology, on the basis of the desired call type for communication notified and the radio access capability of the mobile station, making, from the access node in the first radio access technology, an instruction to the mobile station, when determining that the radio access technology of a target for connection of the mobile station is to be switched from the first radio access technology to the second radio access technology, the instruction instructing the switching, and transmitting, from the mobile station to an access node in the second radio access technology, a connection request signal, in accordance with the instruction from the access node in the first radio access technology.
摘要:
A signal transmission method checks, when detecting an occurrence of a communication request, whether the communication request is a high speed communication (step S302). In the case of the high speed communication, it checks whether the number of current high speed communications (m) plus one is greater than the upper limit (mmax) of the high speed communication (step S312). If greater, it cancels the request as a call loss (S316), and sets to a variable a the ratio (h) of the rate of the high speed communication to that of a low speed communication. If the communication request is the low speed communication, it sets one to the variable a (step S304). It compares n plus a with nmax (step S306), where n is the total number of all the current communications, a is the value associated with the communication request, and nmax is the upper limit of the number of communications acceptable in a bandwidth, all of which are expressed in terms of the number of the low speed communications. If n plus a is greater than nmax, the communication request is canceled as a call loss (S316). Otherwise, the total number of the current high speed communications (m) and the total number of all the current communications (n) expressed in terms of the number of the low speed communications are updated, and a channel is assigned to the communication request (step S310).
摘要:
A radio network controller comprises a cell selector configured to select a cell to use by a mobile station after data reception, and a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception.
摘要:
A mobile communication method for performing a handover procedure of a mobile station from a CSG cell #1 subordinate to a radio base station HeNB#1 to a CSG cell #2 subordinate to a radio base station HeNB#2, comprising a step A of, after a connection destination cell of the mobile station has been switched from the CSG cell #1 to the CSG cell #2, the radio base station HeNB#2 using "Path Switch Request" to notify a mobile switching center MME of CSG ID = #20 to which the CSG cell #2 belongs and an access mode in which the CSG cell #2 is operating; and a step B of the mobile switching center MME performing access control for the mobile station to the CSG cell #2 on the basis of the CSG ID = #20 and the access mode in which the CSG cell #2 is operating as notified.
摘要:
The application relates to handover in mobile communication systems and in particular to a radio base station in the form of an HeNB of an Long Term Evolution LTE system. In such systems, the configuration is conventionally such that a Mobility Management Entity MME performs access control for a mobile station UE to a handover destination cell in a handover procedure. In a case where the "CSG (Closed Subscriber Group) ID" of the handover destination cell and the "CSG ID" of the handover source cell are different, access control by the above-described mobile switching center MME is needed, and therefore an S1 handover must be performed, rather than an X2 handover. Moreover, even in a case where the "CSG ID" of the handover destination cell and the "CSG ID" of the handover source cell are identical, then in a case where information involved in the term of validity of the "CSG ID" of the cells that the mobile station UE is able to access is not promptly synchronized and is not consistent between the mobile station UE and a network, then access control by the MME is still needed, and therefore the S1 handover must be performed, rather than the X2 handover. Therefore, the application proposes that in the handover procedure of the mobile station UE, the source HeNB determines whether or not the "CSG ID" of the handover destination cell and the "CSG ID" of the handover source cell are consistent, by comparing "CSG ID" contained in "Measurement Report" received from the mobile station UE and "CSG ID" of the subordinate cell being managed by the HeNB. In a case where it is determined that the two are consistent, a decision is made to perform an X2 handover, and in a case where is determined that the two are not consistent, then a decision is made to perform an S1 handover.
摘要:
The present invention relates to a base station for generating and transmitting system information to a mobile station. The present invention also relates to a communication method of communicating system information in a communication system including the base station and the mobile station. The base station generates system information; categorizes the system information into multiple pieces of system information; multiplexes the categorized multiple pieces of system information into multiple channels or multiple blocks; and transmits the system information on the multiple channels or the multiple blocks. The mobile station receives system information included in a portion of the multiple channels or the multiple blocks.
摘要:
A radio base station according to the present invention comprising : a mobile communication system, a first relay node and a radio base station are connected via a radio bearer, a second relay node and a radio base station are connected via a radio bearer, a mobile station is configured so as to conduct a handover process between a first state wherein a radio bearer is established with the first relay node in order to communicate via the first relay node and the radio base station, and a second state wherein a radio bearer is established with the second relay node in order to communicate via the second relay node and the radio base station and the mobile station is configured such that in the handover process, control signals involved in the handover process are transmitted and received via the radio bearer between the first relay node and the radio base station, and via the radio bearer between the second relay node and the radio base station.
摘要:
A radio network controller comprises a cell selector configured to select a cell to use by a mobile station after data reception, and a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception.
摘要:
A packet communications system which transmits a packet at a predetermined transmission rate includes a packet size controller (14) configured to change a size of the packet in accordance with available space of a transmission buffer (11) storing the packet, when the predetermined transmission rate is changed.