CN100417260C - A Time Slot and Frequency Point Selection Method for Multi-rate Services in Personal Handset System - Google Patents

Abstract

The time slot frequency point selection method for multi-rate services in the PHS system of the present invention takes the time slot resources of the PHS system as a processing cycle according to every four 5-millisecond frames, and each 5-millisecond frame in the processing cycle is a modular processing unit , and each of the above-mentioned module processing units is strictly numbered according to 0~3; the time slot frequency point is updated by time slot frequency point scanning, and the time slot frequency point storage array is used to store the time slot frequency point scanning result information; the time slot frequency point allocation control is used to control the Service allocation frequency points; use time slot frequency point scanning control to control the scanning of frequency points. In the existing PHS system base station, adopting the method proposed by the present invention does not need to increase new hardware costs, as long as the software is upgraded, it can well meet the realization of 32K, 16K and 8K independent rate services or mixed rate services. PHS system business has very positive significance.

Description

A Time Slot and Frequency Point Selection Method for Multi-rate Services in Personal Handset System

technical field

The present invention relates to a time slot and frequency point selection method for realizing multi-rate services in a Personal Handyphone System (Personal Handyphone System) (hereinafter referred to as PHS system).

Background technique

"RCR STD-28 Agreement" (PHS system air protocol standard) requires that the PHS system can carry 32K, 16K and 8K services individually or in combination. The current PHS system can only carry 32K services (that is, full-rate services), and cannot provide low-rate services (such as 16K and 8K services, that is, non-full-rate services), so it cannot provide various mixed-rate services.

To provide the above-mentioned multi-rate services, especially to provide various mixed-rate services, the key is how to select the normal frequency point for the time slots of the non-full-rate services, so as to ensure the full utilization of the time-slot resources of the non-full-rate services. In view of this situation, it is necessary to propose a time slot frequency point selection method for multi-rate services, so as to well meet the realization of 32K, 16K and 8K independent rate services or mixed rate services. In the existing PHS system, there is no such publicly available method for selecting time slots and frequency points for multi-rate services.

Contents of the invention

In view of the foregoing, the purpose of the present invention is to propose a time slot frequency point selection method for realizing multi-rate services in the PHS system, which can well satisfy the realization of 32K, 16K and 8K independent rate services or mixed rate services .

With the present invention, in the PHS system shown in FIG. 1 , full rate (ie 32K rate) service, half rate (ie 16K rate) service and quarter rate (ie 8K rate) service can be provided. If four consecutive 5-millisecond frames are used as a cycle, each 5-millisecond frame in each cycle is a module unit, and each module unit is serially numbered according to the cycle of 0 to 3 (the format is shown in Figure 7) , then in the full-rate service, the terminal occupies the corresponding time slot in each module unit, that is, uses the time-slot resource every 5 milliseconds (as shown in Figure 2); The corresponding time slot is permanently occupied, so that half of the resource bits are idle, that is, the time slot resource is used once every 10 milliseconds (as shown in Figure 3); in the quarter-rate service, the terminal only occupies the time slot once in the cycle slot resource, that is, the slot resource is used every 20 milliseconds (as shown in FIG. 4 ). Therefore, it can be seen from the above method that the full-rate service occupies all the time slot resources of the time slot; the non-full-rate service only occupies part of the time slot resources of the time slot, and the vacant time slot resources can be used by other non-full-rate service users . Therefore, full-rate, half-rate and quarter-rate services can be carried simultaneously in the PHS system (as shown in FIG. 5 ).

A time slot frequency point selection method for multi-rate services in the PHS system proposed by the present invention is characterized in that the time slot resources of the personal handset system are regarded as a processing cycle according to every 4 5 millisecond frames, and each time slot in the processing cycle Each 5 ms frame is a modulus processing unit, and each modulo processing unit is numbered strictly according to 0~3; the time slot frequency point is updated by time slot frequency point scanning, and the time slot frequency point storage array is used to store the time slot frequency point scanning result information; use the time slot frequency point allocation control to allocate frequency points to the business; use the time slot frequency point scanning control to control the scanning of frequency points.

Wherein above-mentioned time slot frequency point is updated with time slot frequency point scanning, and the realization step of storing time slot frequency point scanning result information with time slot frequency point storage array is: Scan the frequency points, and store the scanning result information in the time slot frequency point storage array; the period in the above time slot frequency point storage array corresponds to a complete 4 5 ms frames, and the modulus corresponds to the first few frames in the cycle. frame of 5 milliseconds; the maximum number of cycles is the number of all network allocated frequency points that can be stored in the above-mentioned time slot frequency point storage array.

The above-mentioned implementation steps of using time slot frequency point allocation control to service allocation frequency points are: only assign full-rate services to unassigned time slots; only assign half-rate services when there are two idle mode periods at intervals in the time slots ; As long as there is an idle modulo period in the time slot, it is assigned as a quarter-rate service.

The above-mentioned implementation steps of controlling the scanning of frequency points with the time slot frequency point scanning control are: when the corresponding time slot mode cycle is assigned to full-rate business, then each mode cycle will stop the time slot frequency point scanning, and the time slot will be in each mode The cycle will be occupied and the communication will be performed according to the assigned time slot frequency point; when the corresponding time slot modulo cycle is assigned as a half-rate service, the interval modulo cycle will stop the time slot frequency point scanning, and the time slot will be occupied on the interval modulo cycle And perform communication according to the assigned time slot frequency point, and the unoccupied mode cycle will continue to perform its time slot frequency point scanning; when the corresponding time slot mode cycle is assigned as a quarter-rate service, except for the occupied time Except for the slot mode period, other unoccupied slot mode periods will continue to perform independent time slot frequency point scanning.

In the existing PHS system base station, adopting the method proposed by the present invention does not need to increase the cost of new hardware, as long as the software is upgraded, it can well meet the realization of 32K, 16K and 8K independent rate services or mixed rate services. PHS system business has very positive significance.

The specific implementation of the method of the present invention will be further described in detail with preferred embodiments below in conjunction with the accompanying drawings. The above and other objects, features and advantages of the present invention will be apparent to those skilled in the art from the detailed description of the method of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of a PHS network implemented by the present invention.

Fig. 2 is a schematic diagram of the use of time slots realized by 32K services.

FIG. 3 is a schematic diagram of time slot usage for 16K service implementation.

Figure 4 is a schematic diagram of time slot usage for 8K service implementation.

Fig. 5 is a schematic diagram of the use of time slots realized by various mixed services.

Fig. 6 is a logical schematic diagram of the implementation of the present invention.

FIG. 7 is a schematic diagram of the definition of period and modulus described in the implementation of the present invention.

FIG. 8 is a schematic diagram of a storage array for time slot frequency points described in the implementation of the present invention.

Detailed ways

The method described in the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

FIG. 6 is a schematic diagram of system logic corresponding to the implementation of the present invention. As shown in Figure 6, the time slot frequency point scanning is used to update the time slot frequency point, the time slot frequency point storage array is used to store the time slot frequency point scanning result information, and the time slot frequency point allocation control is used to control the service allocation time Slot frequency point, time slot frequency point scanning control is used to control the scanning of time slot frequency point.

The time slot frequency point selection method of multi-rate business in a kind of PHS system that the present invention proposes, it mainly comprises following two aspects:

(1) Time slot frequency storage array

As shown in Figure 7, the time slot resources of the PHS system are divided into four 5-millisecond frames as a processing cycle, and each 5-millisecond frame in the cycle is a modular processing unit, and each modular processing unit is strictly numbered from 0 to 3. The above time slot frequency point storage array is used to store the scanning result information of a certain time slot frequency point, and its format is shown in FIG. 8 . The cycle in the time slot frequency point storage array corresponds to a complete four 5-millisecond frames, and the modulus corresponds to the number of 5-millisecond frames in the cycle. In Fig. 8, it shows that the frequency points scanned by a certain time slot in four consecutive frames in the first cycle are 31, 32, 33, and 40 respectively, and the frequency points scanned in four consecutive frames in the immediately following cycle are 31, 32, 33 and 40. The points are 50, 51, 52 and 54 respectively. The time slot frequency point information scanned by the PHS system is stored in the time slot frequency point storage array according to the corresponding relationship between the period and the modulus in the above way, and the maximum number of cycles is as long as it can be stored in the time slot frequency point storage array. It is enough for the network to allocate frequency points, for example, in this embodiment, the number of available frequency points is equal to the number of groups of four.

(2) Time slot frequency allocation control and scanning control

The realization of the multi-rate service is mainly time slot frequency point scanning, time slot frequency point distribution control and time slot frequency point scanning control, and the present invention is controlled by the following rules:

(a) When the slot is completely idle, the PHS system scans the frequency point every 5 milliseconds in the slot. According to the method described in the above-mentioned time slot frequency point storage array, the period and modulus corresponding to the scanning result information are stored in the time slot frequency point storage array.

(b) Only unassigned time slots can be assigned full-rate services; only when there are two idle modulo cycles in the time slot can they be assigned as half-rate services; as long as there are idle modulo cycles in the time slots, they can be assigned as Quarter rate service.

(c) When the corresponding time slot mode cycle is assigned as a full-rate service, the frequency point scanning of the time slot will be stopped in each mode cycle, and the time slot will be occupied in each mode cycle and communication will be performed according to the assigned time slot frequency point.

(d) When the corresponding time slot modulo cycle is assigned as a half-rate service, the interval modulo cycle will stop the time slot frequency point scanning, the time slot is occupied on the interval modulo cycle and perform communication according to the assigned time slot frequency point (such as When assigning a time slot mode cycle with a modulus of 1, a time slot mode cycle with a modulus of 3 will be occupied at the same time), and an unoccupied mode cycle will continue to perform its time slot frequency point scanning.

(e) When the corresponding time slot mode cycle is assigned as a quarter-rate service, except for the occupied time slot mode cycle, other unoccupied time slot mode cycles will continue to perform independent time slot frequency point scanning .

The working principle of the present invention has been described in detail above, but this is only a vivid example for easy understanding, and should not be regarded as limiting the scope of the present invention. Similarly, any ordinary professional in the technical field can make various possible equivalent changes or replacements according to the technical solution of the present invention and the description of its preferred embodiments, but all these changes or replacements should belong to the scope of the present invention. The scope of the claims.

Claims (3)

1. A time slot frequency point selection method for multi-rate business in a personal handset system, characterized in that the time slot resource of the personal handset system is used as a processing cycle according to every 4 frames of 5 milliseconds, each in the processing cycle Each 5 millisecond frame is a modular processing unit, and each of the above modular processing units is strictly numbered according to 0-3; Use the time slot frequency point scanning to update the time slot frequency point, and use the time slot frequency point storage array to store the time slot frequency point scanning result information; Use time slot frequency allocation control to allocate frequency points to services, and only assign full-rate services to unassigned time slots; assign half-rate services only when there are two idle periods in the time slot; If there is an idle module cycle, it is assigned as a quarter-rate service; The time slot frequency point scanning control is assigned to the full rate service, half rate service or quarter rate service control to scan the frequency point according to the time slot mode cycle. 2. The method according to claim 1, characterized in that the time slot frequency point is updated with the time slot frequency point scanning, and the realization step of storing the time slot frequency point scanning result information with the time slot frequency point storage array is: when the time slot is completely idle , the personal handheld system scans the frequency points every 5 milliseconds in the time slot, and stores the scanning result information in the time slot frequency point storage array; the period in the above time slot frequency point storage array corresponds to a complete 4 5 millisecond frame, the modulus corresponds to the number of 5 millisecond frames in the cycle; the maximum cycle number is the number of all network allocated frequency points that can be stored in the above-mentioned time slot frequency point storage array. 3. The method according to claim 1, characterized in that the above-mentioned time slot frequency point scanning control is assigned to full-rate service, half-rate service or quarter-rate service control according to the time slot mode cycle to realize the scanning of frequency points The steps are: when the corresponding time slot mode cycle is assigned as a full-rate service, the time slot frequency point scanning will be stopped in each mode period, and the time slot will be occupied in each mode cycle and communication will be performed according to the assigned time slot frequency point; When the corresponding time slot mode cycle is assigned as a half-rate service, the interval mode cycle will stop the time slot frequency point scanning, the time slot is occupied in the interval mode cycle and perform communication according to the assigned time slot frequency point, and the unoccupied The mode cycle will continue to perform its time slot frequency point scanning; when the corresponding time slot mode period is assigned as a quarter-rate service, then except for the occupied time slot mode period, other unoccupied time slot mode periods will be Continuously perform independent time slot frequency scan.

Images