Radio base system, channel allocation method and channel allocating program

• US 20040072560A1
• Filed: 07/31/2003
• Published: 04/15/2004
• Est. Priority Date: 01/31/2001
• Status: Active Grant

• Current Assignee: Godo Kaisha IP Bridge 1 (IP Bridge, Inc.)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Nakao, Seigo, Miyata, Takeo, Mori, Koichi
• Granted Patent: US 7,738,438 B2
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A radio base system (1000) is multi-path-connected to a plurality of mobile terminal devices to transmit/receive signals. When a communication channel establishment request is sent from one of the plurality of mobile terminal devices, a control unit (80) detects the presence or absence of a mobile terminal device to which a communication channel is already connected for each of a plurality of slots. When channel allocation has to be performed by path multiplexing on the mobile terminal device which has sent the channel establishment request, control unit (80) permits channel establishment in accordance with a result of detection of an error detecting unit (56).

Claims

1. A radio base system (1000) multi-path connected to a plurality of mobile terminal devices via a plurality of paths, each of which is multiplexed to a plurality of slots in a time division manner, to transmit/receive signals, comprising:

signal adjusting means (51) for performing an adaptive array process for performing multi-path connection to said plurality of mobile terminal devices;

error detecting means (56) for detecting an error in a signal from the mobile terminal device connected to each of said plurality of slots; and

control means (80), when a communication channel establishment request is sent from one of said plurality of mobile terminal devices, for detecting the presence or absence of a mobile terminal device to which a communication channel is already connected for each of said plurality of slots and, when a channel has to be allocated to said one mobile terminal device by path-multiplexing, for permitting channel establishment in accordance with a result of detection of said error detecting means.

2. The radio base system according to claim 1, wherein

said signal includes a code for error detection, and

said error detecting means detects an error in said signal on the basis of said error detection code.

3. The radio base system according to claim 1, wherein

said signal includes a reference signal used by said signal adjusting means to perform said adaptive array process, and

said error detecting means detects an error in said signal on the basis of a detection error of said reference signal.

4. The radio base system according to claim 2, wherein

said signal includes a plurality of frames each having a predetermined number of said slots, and

said error detecting means detects an error in said signal on the basis of the number of errors based on said error detection code per said frame.

5. A channel allocating method in a radio base system multi-path connected to a plurality of mobile terminal devices via a plurality of paths, each of which is multiplexed to a plurality of slots in a time division manner, to transmit/receive signals, the method comprising the steps of:

detecting an error in a signal from the mobile terminal device connected to each of said plurality of slots;

detecting, when a communication channel establishment request is sent from one of said plurality of mobile terminal devices, the presence or absence of a mobile terminal device to which a communication channel is already connected for each of said plurality of slots; and

permitting, when a channel has to be allocated to said one mobile terminal device by path-multiplexing, channel establishment in accordance with said detected error.

6. The channel allocating method according to claim 5, wherein

said signal includes a code for error detection, and

said error detecting step includes the step of detecting an error in said signal on the basis of said error detection code.

7. The channel allocating method according to claim 5, wherein

said signal includes a reference signal used to perform an adaptive process for performing said path multiplexing connection to said plurality of mobile terminal devices, and

said error detecting step includes the step of detecting an error in said signal on the basis of a detection error of said reference signal.

8. The channel allocating method according to claim 6, wherein

said signal includes a plurality of frames each having a predetermined number of said slots, and

said error detecting step includes the step of detecting an error in said signal on the basis of the number of errors based on said error detection code per said frame.

9. A program for a computer for allocating a channel in a radio base system multi-path connected to a plurality of mobile terminal devices via a plurality of paths, each of which is multiplexed to a plurality of slots in a time division manner, to transmit/receive signals, the program causing the computer to execute the steps of:

detecting an error in a signal from the mobile terminal device connected to each of said plurality of slots;

detecting, when a communication channel establishment request is sent from one of said plurality of mobile terminal devices, the presence or absence of a mobile terminal device to which a communication channel is already connected for each of said plurality of slots; and

permitting, when a channel has to be allocated to said one mobile terminal device by path-multiplexing, channel establishment in accordance with said detected error.

10. The program according to claim 9, wherein

said signal includes a code for error detection, and

said error detecting step includes the step of detecting an error in said signal on the basis of said error detection code.

11. The program according to claim 9, wherein

said signal includes a reference signal used to perform an adaptive array process for performing said path multiplexing connection on said plurality of mobile terminal devices, and

said error detecting step includes the step of detecting an error in said signal on the basis of a detection error of said reference signal.

12. The program according to claim 10, wherein

said signal includes a plurality of frames each having a predetermined number of said slots, and

said error detecting step includes the step of detecting an error in said signal on the basis of the number of errors based on said error detection code per said frame.