PHS subscriber loop multiplex communication system
AssigneeNEC Corporation
InventorYoshimi Anbe
Life of this patent
Estimating the term…
Abstract
In a communication system between a CS concentrator 50-1 concentrating lines of PHS radio base stations 10-1 to 10-N and being located in a remote area and a subscriber terminal device 60 in a PHS exchange, by multiplexing two call control groups of (14B+D+C) channels on a 2M primary-group transmission line, a PHS system is constructed which uses the 2M primary-group transmission line with a good channel operating efficiency.
Claims3
A PHS subscriber loop multiplex communication system wherein connection is made by a 2M primary-group transmission line between a PHS radio base station concentrator connected to a PHS radio base station and located in a remote area and a subscriber terminal device in a PHS exchange, and two (14B+D +C) channel call control groups are multiplexed on the 2M primary-group transmission line,
- wherein said subscriber terminal device includes means for monitoring a traffic quantity on a channel D of said PHS radio base station concentrator and determining a traffic regulating value and means for using a channel C for maintenance control information to transmit the determined traffic regulating value to said PHS radio station concentrator, and
- wherein said PHS radio base station includes means for receiving the traffic regulating value from said subscriber terminal device and means for transmitting a disconnection message in response to a calling/position registration signal from said PHS radio base station in accordance with the received traffic regulating value.
A PHS subscriber loop multiplex communication system which includes a PHS radio base station concentrator connected to a PHS radio base station and located in a remote area and a PHS exchange including a subscriber terminal device, wherein
- said PHS radio base station concentrator includes first interface means for interfacing with said subscriber terminal device via a 2M primary-group transmission line in which two (14B+D+C) channel call control groups are multiplexed on a single transmission line;
- first (D+C) channel terminal means for terminating a channel D for performing communication with said subscriber terminal device by using TTC JT-Q921-b and a channel C for receiving maintenance control information from said subscriber terminal device;
- and first switch means for using a time division switch to connect (D+C) channel information of said first (D+C) channel terminal means to a (D+C) channel interfacing on said 2M primary-group transmission line,
- said subscriber terminal device including second interface means for interfacing with said PHS radio base station terminal device via the 2M primary-group transmission line in which two (14B+D+C) channel call control groups are multiplexed on a single transmission line;
- second (D+C) channel terminal means for terminating the channel D for performing communication with said PHS radio base station by using TTC JT-Q921-b and the channel C for transmitting the maintenance control information to said PHS radio base station concentrator;
- and second switch means for using a time division switch to connect the (D+C) channel information of said second (D+C) channel terminal means to the (D+C) channel interfacing on said 2M primary-group transmission line, and
- in said 2M primary-group transmission line, two groups of (14B+D+C) channels being placed.
Dependencies are inferred from the claim text.