Time slot assignment method and apparatus in mobile communication system

• US 20020067709A1
• Filed: 11/07/2001
• Published: 06/06/2002
• Est. Priority Date: 11/09/2000
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Moon, Sung Uk., Futakata, Toshiyuki, Yamada, Mayu
• Application Number:
  US10/045,437
• Publication Number:
  US 20020067709A1
• Time in Patent Office: Days
• US Class Current: 370/337
• CPC Class Codes: H04B 7/2643 using time-division multiple access [TDMA] H04B7/2615, H04B7/2618 take precedence
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

A mobile communication system can limit interference from mobile stations under an adjacent base station to a minimum. In response to a time slot assignment request, a time slot management section compares available time slots stored in an assignable time slot database with a priority table of the time slot assignment, which is stored in the priority database, and assigns the time slots in accordance with the compared result. After completing the assignment, it stores a table of the frame state indicating new available time slots into the assignable time slot database.

Claims

1. A time slot assignment method in a mobile communication system employing a TDMA and TDD scheme that assigns time slots, which are formed by time dividing a frame of a frequency band, to uplink channels and downlink channels, said time slot assignment method in a mobile communication system comprising the steps of:

giving uplink or downlink priorities to all the time slots in the frame;

receiving a time slot assignment request from at least one of the uplink channels and the downlink channels; and

assigning the time slots in the frame in response to the time slot assignment request received at the receiving step, in accordance with the priorities given at the giving step.

2. The time slot assignment method as claimed in claim 1, wherein the giving step gives the same priority to a plurality of the time slots included in the frame.

3. The time slot assignment method as claimed in claim 1, wherein the giving step stores the given priorities in a memory means, and the assigning step assigns the time slots in the frame in accordance with the priorities stored in said memory means.

4. A time slot assignment apparatus in a mobile communication system employing a TDMA and TDD scheme that assigns time slots, which are formed by time dividing a frame of a frequency band, to uplink channels and downlink channels, said time slot assignment apparatus in a mobile communication system comprising:

memory means for storing uplink or downlink priorities of all the time slots in the frame;

receiving means for receiving a time slot assignment request from at least one of the uplink channels and the downlink channels; and

assignment means for assigning the time slots in the frame in response to the time slot assignment request received by said receiving means, in accordance with the priorities store in said memory means.

5. The time slot assignment apparatus as claimed in claim 4, wherein said memory means gives the same priority to a plurality of the time slots included in the frame.

6. The time slot assignment apparatus as claimed in claim 4, wherein said assignment means decides the priorities of the time slots to be assigned in accordance with the priorities stored in said memory means.