초록 ▼

A mobile radio communications network includes mobile radio units, radio base stations for communicating with the mobile radio units over a radio-based channel, and a radio switching controller connected to the radio base stations for routing calls to and from various ones of the base stations. Each

A mobile radio communications network includes mobile radio units, radio base stations for communicating with the mobile radio units over a radio-based channel, and a radio switching controller connected to the radio base stations for routing calls to and from various ones of the base stations. Each of the radio base stations, the radio switching controller, and/or other nodes in the mobile radio communications network includes an asynchronous transfer mode (ATM) switch connected to plural function modules. Signaling and traffic communications between the function modules are effected asynchronously to efficiently meet current service bandwidth/data rate demands using the ATM switch and ATM switching protocol. Each function module includes a data processing circuitry that performs ATM cell buffering and other ATM control tasks in addition to other dedicated application tasks for supporting mobile radio communications. Capacity is readily increased by modularly adding function modules to vacant ports on the ATM switch without having to modify existing function modules already connected to the ATM switch. This provides considerable flexibility and scalability to adapt the radio communications network to current needs.

대표청구항 ▼

A mobile radio communications network includes mobile radio units, radio base stations for communicating with the mobile radio units over a radio-based channel, and a radio switching controller connected to the radio base stations for routing calls to and from various ones of the base stations. Each

A mobile radio communications network includes mobile radio units, radio base stations for communicating with the mobile radio units over a radio-based channel, and a radio switching controller connected to the radio base stations for routing calls to and from various ones of the base stations. Each of the radio base stations, the radio switching controller, and/or other nodes in the mobile radio communications network includes an asynchronous transfer mode (ATM) switch connected to plural function modules. Signaling and traffic communications between the function modules are effected asynchronously to efficiently meet current service bandwidth/data rate demands using the ATM switch and ATM switching protocol. Each function module includes a data processing circuitry that performs ATM cell buffering and other ATM control tasks in addition to other dedicated application tasks for supporting mobile radio communications. Capacity is readily increased by modularly adding function modules to vacant ports on the ATM switch without having to modify existing function modules already connected to the ATM switch. This provides considerable flexibility and scalability to adapt the radio communications network to current needs. solution time reference time generating section, for timing, in synchronism with the low-resolution timing signal, a first elapsed time duration from the starting time instant of the low-resolution use time interval, said low-resolution use time interval timer producing a first time-out signal when the first elapsed time duration amounts to the low-resolution use time interval; a trigger producing circuit, connected to said low-resolution use time interval timer and said phase measurement section, for producing the operation control trigger signal indicative of the operation stop of said high-resolution time reference generating section in response to the phase measurement result signal, said trigger producing circuit producing the operation control trigger signal indicative of the operation start of said high-resolution time reference generating section in response to the first time-out signal; and a high-resolution compensation time interval timer, connected to said low-resolution use time interval timer, said phase measurement section, and said high-resolution time reference generating section, for timing, in synchronism with the high-resolution timing signal, a second elapsed time duration from an expiry time instant of the low-resolution use time interval, said high-resolution compensation time interval timer producing a second time-out signal as the despreading code timing adjustment signal when the second elapsed time duration amounts to the high-resolution compensation time interval. 7. A CDMA receiver as claimed in claim 5, wherein said starting difference time interval timer comprises an up-counter for starting, in synchronism with the high-resolution timing signal, an up-count operation in response to an edge of the low-resolution timing signal and for stopping the up-count operation in response to the despreading code timing signal, said up-counter producing an up-counted value indicative of the starting difference time interval, said calculation circuit calculating a calculated value indicative of the high-resolution compensation time interval using the reception operation stop time interval, the starting difference time interval, the low-resolution use time interval, and the high-resolution period, said register holding the calculated value as a held value to produce the held value as the phase measurement result signal. 8. A CDMA receiver as claimed in claim 7, wherein said timing generating section comprises: a first down-counter, connected to said low-resolution time reference time generating section and provided with the predetermined positive integer, for carrying out, in synchronism with the low-reso