CN100550704C - Channel priority queuing strategy in the multi-carrier communications systems - Google Patents

Abstract

The invention discloses a kind of channel priority queuing strategy of multi-carrier communications systems, comprising: (1) when the user initiated channel request, system obtained described user's resource requirement from described request; (2) system from all carrier waves, find out satisfy described user resource request carrier wave as candidate carrier, and from described candidate carrier, select the highest carrier wave of priority; (3) from the highest carrier wave of described priority, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel that described customer service is used thus according to the sign indicating number distribution principle.The present invention has made full use of the characteristics of multi-carrier-wave TDD/CDMA mobile communication system, solved the problem of multi-carrier-wave TDD/cdma system about the channel priority queuing, make that the channel priority queuing strategy in the system is reasonable and effective, system's access success rate and handover success rate are higher, user's access delay is littler, thereby has improved the whole system combination property.

Description

Channel priority queuing method in multi-carrier communication system

technical field

The invention relates to the field of wireless communication, in particular to a channel priority queuing method, and is a channel priority queuing method suitable for multi-carrier communication systems.

Background technique

In an existing communication system, when a user makes a call request, a channel needs to be allocated to the user, so that the user can communicate with the network side. If there are multiple channels available for allocation, the system needs to sort these channels according to certain rules to determine the priority of each channel. Finally, the system selects the channel with the highest priority to allocate to the user so that the user can access a good channel. channel, thereby improving the system call success rate and reducing the system call drop rate.

Taking the TDD/CDMA (Time Division Duplex/Code Division Multiple Access) communication system as an example, only the channels of the single-carrier communication system are queued with priority at present, and it mainly includes the following steps (see Figure 1): First: single-carrier Each time slot of each time slot is queued according to the load measurement or idle resource information, and the time slot priority of each time slot is obtained (step S110); then, in the time slot with high priority, the corresponding code resource is allocated according to the code allocation principle, thereby determining The channel used by the user (step S120).

The system usually judges whether it is necessary to arrange resources across time slots according to the user's business needs. If so, select a number of time slots according to the order of priority. Otherwise, it can allocate corresponding code resources in the time slot with the highest priority according to the code allocation principle. This determines the channel used by the user.

With the growth of the number of users, when the wireless traffic density generated by the increase of user voice and data exceeds the capacity density that a single-carrier cell can provide under the premise of satisfying coverage, using multiple carriers becomes an effective way to expand cell capacity. However, a channel priority queuing method for a multi-carrier communication system has not been proposed in the prior art.

Contents of the invention

The purpose of the present invention is to provide a channel priority queuing method for a multi-carrier communication system, so as to improve the call success rate and switching success rate of the system in the multi-carrier communication system.

In order to solve the above problems, the present invention discloses a first channel priority queuing method for a multi-carrier communication system, including: (1) when a user initiates a channel request, the system obtains the resource requirement of the user from the request; 2) The system finds a carrier that meets the user resource requirements from all carriers as a candidate carrier, and selects the carrier with the highest priority from the candidate carriers; (3) selects the carrier with the highest priority from the carrier with the highest priority In the high time slot, the corresponding code resource is allocated according to the code allocation principle in the time slot, thereby determining the channel used by the user.

The step (2) of the above-mentioned first method further includes: when the system does not find a carrier that meets the user resource requirements, then select a carrier that meets the user resource requirements in the uplink or downlink direction as a candidate carrier, and select from the candidate carriers The carrier with the highest priority; the carrier performs resource integration in the other direction.

The above-mentioned carrier priority is determined according to the following steps: determine the priority direction of the carrier according to the user service characteristics or network resource characteristics, wherein when the user service characteristics are used to determine the priority direction of the carrier, the direction with the most traffic in the uplink and downlink traffic is Priority direction, when determining the priority direction of the carrier based on the characteristics of network resources, the direction with limited resources in the uplink and downlink resources is the priority direction; determine the priority of the carrier according to the priority criterion in the priority direction, so as to find the carrier with the highest priority.

In addition, the priority criterion in the priority direction is that the carrier with more power resources, smaller interference or more basic radio unit BRU resources in the priority direction has a higher priority.

The priority criterion in the priority direction may also be that the greater the carrier index S in the priority direction, the higher the priority of the carrier, wherein the carrier index S is obtained in the following manner: According to S=Q1*M1+ Q2/M2+Q3*M3 obtains the measurement index S of each carrier, where Q1, Q2, and Q3 are the pre-set priority direction power resources, interference, and BRU resources in the carrier priority. The power number of the priority direction, M2 is the interference coefficient of the carrier, and M3 is the number of BRU resources of the carrier.

The time slot priority is sorted according to the time slot load balancing principle, and the time slot with the most remaining BRU resources has the highest priority, or the time slot priority is sorted according to the principle of time slot interference, and the time slot with the least interference The time slot has the highest priority.

Step (3) is specifically: (a1) judging whether resources need to be arranged across time slots, if so, selecting the corresponding number of time slots according to the order of priority, and allocating the corresponding code resources of each time slot to the to-be-accessed user, otherwise proceed to step (a2); (a2) determine whether the highest priority time slot can meet the user's needs, if so, allocate the corresponding code resource of this time slot to the user to be accessed, otherwise perform resource integration on the time slot After that, the corresponding code resources of this time slot are allocated to the users to be accessed.

Allocating corresponding code resources in the time slot includes: queuing up the priority of channelization codes in the time slot, and the priority of channelization codes is determined according to the spreading factor, and the smaller the spreading factor is, the more channelized The higher the priority of the code is, the channelization code with higher priority is assigned to the user according to the principle of compactness.

The present invention also provides a second channel priority queuing method for a multi-carrier communication system, including: (1) when a user initiates a channel request, the system obtains the resource requirement of the user from the request; (2) the system presses In the uplink direction and the downlink direction, select time slots that meet user resource requirements as uplink candidate time slots and downlink candidate time slots, and determine the priority direction; (3) select a time slot with a high priority from the priority direction candidate time slots. The corresponding code resource is allocated in the time slot according to the code allocation principle, thereby determining the channel used by the user service.

The step (3) of the above-mentioned second method also includes: m1: judging whether the resource in another direction of the carrier where the time slot with high priority in the priority direction is located satisfies the user resource requirements, if so, directly in the time slot according to the code The allocation principle allocates the corresponding code resource to the user, otherwise, proceed to step m2; m2: first perform resource integration in the time slot, and then allocate the corresponding code resource in the time slot according to the code allocation principle, thereby determining the The channel used by the user's service.

The above time slots are determined jointly by the carrier number and the time slot number. In addition, the time slot priority is sorted according to the principle of time slot load balancing, and the time slot with the most remaining BRU resources has the highest priority, or the time slot priority is sorted according to the principle of time slot interference, with the least interference The time slot with the highest priority.

Allocating corresponding code resources in the time slot includes: queuing up the priority of channelization codes in the highest priority carrier and time slot, the channelization code priority is determined according to the spreading factor, the spreading factor The smaller the factor, the higher the priority of the channelization code; the channelization code with high priority is assigned to the user according to the principle of compactness.

Wherein, the step (2) of the second method further includes: when the system does not find a time slot satisfying the resource requirements of the user, firstly integrate the resources of the time slot.

Compared with the prior art, the present invention has the following advantages: the present invention makes full use of the characteristics of the multi-carrier TDD/CDMA mobile communication system, solves the problem of the multi-carrier TDD/CDMA system about channel priority queuing, and makes the channels in the system The priority queuing method is reasonable and effective, which is conducive to obtaining a higher system access success rate and handover success rate, and at the same time, it is beneficial to users to obtain a smaller access delay, thereby improving the overall performance of the entire system.

Description of drawings

FIG. 1 is a flowchart of priority queuing for channels of a single carrier communication system.

Fig. 2 is a flow chart of a method for priority queuing in channels of a multi-carrier communication system;

Fig. 3 is a flow chart of the first embodiment of priority queuing for channels in a multi-carrier communication system;

Fig. 4 is a flow chart of another method for priority queuing in channels of a multi-carrier communication system;

Fig. 5 is a flowchart of a second embodiment of channel priority queuing in a multi-carrier communication system.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

The invention mainly proposes a channel priority queuing method suitable for a multi-carrier communication system. For a multi-carrier communication system, because the judging process of the carrier resource priority is added when the user accesses, the priority queuing of the channel must be considered from the two resource levels of the carrier priority and the time slot priority, thereby improving the The Difficulty of Channel Priority Queuing in Multicarrier Communication Systems. Generally, the system also needs to ensure that the uplink and downlink channels allocated to the same user are within the same carrier.

Taking the TDD/CDMA cellular mobile communication system as an example, the network side establishes communication with user terminals through several carriers. Each frame of each carrier contains a plurality of time slots, and in each time slot, a number of code channels are divided by spreading codes. And a "carrier + time slot + code channel" is combined into a TDD/CDMA system channel. Furthermore, if the TD-SCDMA system defines a code channel with a spreading factor of SF=16 as a basic resource unit (BRU), then in a time slot, the maximum number of BRUs allowed to exist according to relevant standards is the number of BRUs in the time slot. The number of resources, and the sum of the total resources of all time slots in a carrier is the number of resources of the carrier.

Please refer to FIG. 2 , which is a schematic flowchart of a channel priority queuing method in a multi-carrier communication system according to the present invention. It includes the following steps: first, when a user initiates a channel request, the system obtains the user's resource requirement from the request (step S210); then, the system finds a carrier that meets the user's resource requirement among all carriers as a candidate carrier, and select the carrier with the highest priority (step S220); finally, the system selects a time slot with high priority from the carrier, and allocates corresponding code resources in the time slot according to the code allocation principle, thereby determining the The channel used by the user (step S230).

The carrier priority can be determined according to the following steps:

(1) Determine the preferred direction of the carrier according to user service characteristics or network resource characteristics. When the priority direction is determined by user service characteristics, the direction with more traffic in the uplink and downlink traffic is the priority direction; when the priority direction of the carrier is determined by the characteristics of network resources, the direction with limited resources in the uplink and downlink resources is the priority direction ;

(2) Determine the priority of the carrier according to the priority criterion in the priority direction, so as to find the carrier with the highest priority. For example, the priority criterion in the priority direction is that the carrier with more power resources in the priority direction, smaller interference or more basic radio unit (BRU) resources has a higher priority.

For another example: the priority criterion in the priority direction may be determined according to the measurement index S of each carrier in the priority direction. Since the carrier priority is used to select the carrier used by the user service, each factor to be considered when determining the carrier used by the user is weighted and averaged to obtain a measurement index, and then the carrier priority is obtained according to the measurement index. For example, if the factors considered are power resources in the preferred direction, interference and the number of BRU resources in the carrier, then the priority of the carrier is obtained according to the following steps:

(a1) Obtain the measurement index S of each carrier according to S=Q1*M1+Q2/M2+Q3*M3, wherein, Q1, Q2 and Q3 are preset priority direction power resources, interference and BRU resources in carrier priority The proportion of consideration in the level, M1 is the priority direction power number of the carrier, M2 is the interference coefficient of the carrier, and M3 is the number of BRU resources of the carrier;

(a2) All the carriers are sorted according to the measurement index of the carrier. The larger the measurement index of the carrier, the higher the priority of the carrier.

In addition, the time slot priority is sorted according to the time slot load balancing principle, and the time slot with the most remaining BRU resources has the highest priority. The time slot priority may also be sorted according to the interference of the time slots, and the time slot with the least interference has the highest priority of the time slot.

Please refer to FIG. 3 , which is a schematic flowchart of the first implementation of the channel priority queuing method in the multi-carrier communication system of the present invention.

Step S301, when a new user or a switching user initiates a channel request, the system obtains the user's resource requirement from the request. The request includes the resource requirements of the user service, such as the number of uplink resources and downlink resources that this service needs to occupy, service quality of the service, and the like.

In step S302, the system selects a carrier that satisfies user service resource requirements from all carriers as a candidate carrier. Among them, both the uplink resources and downlink resources in the candidate carrier should meet the user resource requirements, that is, the number of remaining uplink resources in the candidate carrier is greater than or equal to the number of uplink resources that need to be occupied by this service specified in the user resource requirements, and the number of remaining uplink resources in the candidate carrier The number of downlink resources is greater than or equal to the number of downlink resources required for this service specified in the user resource requirements.

Step S303, judging whether the number of candidate carriers is 0, if yes, go to step S308, otherwise go to step S304.

Step S304, prioritizing the candidate carriers, and then finding the carrier with the highest priority. In this embodiment, the priority direction of the carrier may be determined first according to the user's service characteristics, and then the priority of the carrier may be determined according to the priority queuing criterion.

Among them, the priority direction of the carrier is determined according to the user service characteristics, and then the priority of the carrier is determined according to the priority queuing criterion, and then the carrier with the highest priority is found as follows:

First, determine the priority direction of the carrier according to the asymmetry of the uplink and downlink traffic of the service. For users whose downlink business volume is greater than the uplink traffic volume, the preferred direction is downlink. For users whose uplink business volume is greater than downlink traffic volume, the priority direction is uplink. If the uplink and downlink traffic volumes are approximately equal (that is, symmetrical traffic), the preferred direction of the carrier can be determined according to the characteristics of network resources. If uplink network resources are limited, the preferred direction is uplink, and if downlink network resources are limited, the preferred direction is downlink.

The carrier priority is then determined according to the priority queuing criteria in the priority direction. If the priority queuing criterion in the priority direction is that the carrier with more power resources, less interference, and more idle BRUs in the priority direction has a higher priority, you can find the most power resources, the least interference, and idle BRUs from the candidate carriers. The carrier with the highest number is the highest priority carrier. The priority queuing criterion may also be the above disclosed measurement index to determine carrier priority. The measurement index of the carrier is the largest, and the priority of the carrier is the highest.

In addition, the priority direction of the carrier is determined according to the characteristics of the network resources, and then the carrier with the highest priority is found according to the priority queuing criterion. Specifically:

First determine the preferred direction of the carrier according to the characteristics of the network resources. If the uplink resources of the network are limited, the preferred direction is uplink, and if the downlink resources of the network are limited, the preferred direction is downlink.

The carrier priority is then determined according to the priority queuing criteria. If the priority queuing criterion is that the carrier with more power resources, less interference, and more idle BRUs in the priority direction has a higher priority, then the carrier with the most power resources, the least interference, and the largest number of idle BRUs can be found from the candidate carriers is the highest priority carrier. The priority queuing criterion may also be the above-mentioned disclosed measurement index to determine the priority of the carrier. If the measurement index of the carrier is the largest, the carrier priority is the highest.

Step S305, in the carrier with the highest priority, queue the priority of each time slot of the carrier. The time slot priority is sorted according to the time slot load balancing principle, and the time slot with the most remaining BRU resources has the highest priority.

Step S306: The system judges whether resources need to be arranged across time slots, and if so, selects the corresponding number of time slots according to the priority order, and then allocates the code resources of each time slot to the users to be accessed (step S310), and ends; Otherwise, go to step S307. The system can determine whether resources need to be arranged across time slots according to the resources occupied by users. For example, if the number of resources that a user needs to occupy is greater than the maximum number of resources in a time slot, the system needs to arrange resources across time slots for the user and select time slots according to priorities. If the number of resources occupied by the user is less than or equal to the maximum number of resources in one time slot, the system can allocate the time slot with the highest priority to the time slot of the user.

Step S307: Determine whether the highest priority time slot can meet the needs of users, if so, allocate the code resource of this time slot to the user who will be connected (step S311), and end, otherwise, after resource integration for the time slot, and then Allocate the code resource of this time slot to the user to be accessed (step S312), and end. Resource integration for the time slots refers to adjusting the resources used by users in the time slots to one or several other time slots, so that the highest priority time slot can satisfy user service access.

Allocating code resources mainly refers to determining channelization codes for time slots. First, queue up the priority of all channelization codes in the time slot. The priority of the channelization code is determined according to the spreading factor. The smaller the spreading factor, the higher the priority of the channelization code; then allocate according to the principle of compactness Channelization codes with high priority are given to the user.

Taking the TD-SCDMA communication system as an example, the uplink spreading factors are 1, 2, 4, 8, 16, and the downlink spreading factors are 1, 16. When selecting a code channel, the system tries to give priority to channelization codes with small spreading factors. Because the service transmission capability provided by two SF=16 codes is equivalent to one SF=8 code, the selection of the channelization code with a small spreading factor can reduce part of the system processing. The principle of compactness adopted by the system means that the channelization codes assigned to user services are continuous. If the allocated channelization codes are scattered, some large-bandwidth services cannot be accessed.

Step S308, if there is no carrier in all the carriers that can meet the resource requirements of the user in the uplink and downlink at the same time, perform carrier priority queuing, and perform resource integration operations on the carrier with the highest priority. For example: among the carriers that meet the demand in one direction, select the carrier with the highest priority in this direction, and perform resource integration in the other direction of the carrier.

In step S309, if the integration is successful, execute step S305, and if not, end.

In the above-mentioned first embodiment, carriers whose uplink and downlink resources meet user resource requirements are first selected as candidate carriers, and these candidate carriers are prioritized according to certain criteria, and then the carrier with the highest priority is selected as the carrier allocated to the user , then select the time slot with the highest priority in the selected carrier (when resources need to be arranged across time slots, multiple time slots can be selected in order of priority), and finally allocate the code channel with the best priority in the time slot to said user. Through the above method, the user can be allocated a better channel, which is conducive to obtaining a higher system access success rate and handover success rate, and at the same time, it is beneficial to the user to obtain a smaller access delay, thus improving the overall performance of the entire system .

See also Fig. 4, it is the channel priority queuing method of another kind of multi-carrier communication system in the present invention, comprising: first, when the user initiates channel request, system obtains the resource requirement of described user from described request (step S410); Then, the system selects time slots satisfying user resource requirements respectively according to the uplink direction and the downlink direction as uplink candidate time slots and downlink candidate time slots, and determines the priority direction (step S420); finally, from the candidate time slot of the priority direction Select a time slot with high priority among the time slots, and allocate corresponding code resources in the time slot according to the code allocation principle, thereby determining the channel used by the user service (step S430).

The above time slot refers to a time slot jointly determined by a carrier number and a time slot number. For example, there are two carriers in the TD-SCDMA system: the first carrier and the second carrier. Each carrier has 6 service time slots, which are numbered from 1 to 6 respectively. Then, the time slot may be represented by m/n, where m is the carrier number where the time slot is located, and n is the time slot number. For example, time slot 1/5 represents the fifth service time slot in the first carrier.

The time slot priority is obtained when the time slots are sorted according to the time slot load balancing principle, and the time slot with the most remaining BRU resources has the highest priority. In addition, the time slot priority may also be sorted according to the interference of the time slots, and the time slot with the least interference has the highest priority of the time slot.

In step S430, the priority direction is determined according to the uplink and downlink traffic volume of the user: the direction with the largest traffic volume in the uplink traffic volume and the downlink traffic volume is the priority direction, or the priority direction is determined according to the characteristics of network resources: the uplink resource and the downlink resource are in the network The resource-constrained direction is the priority direction.

Please refer to FIG. 5 , which is a flow chart of the second embodiment of the channel priority queuing method in the multi-carrier communication system of the present invention. It includes the following steps:

Step S501: When a new user or a switching user initiates a channel request, the system obtains the resource requirement of the user from the request. The request includes the resource requirements of the user service, such as the number of uplink resources and downlink resources to be occupied by this service, and service quality of the service.

In step S502, according to the uplink and downlink directions, time slots satisfying resource requirements are set as uplink candidate time slots and downlink candidate time slots. The number of remaining uplink resources in the uplink candidate time slot is greater than or equal to the number of uplink resources that need to be occupied by this service specified in the user resource requirements. The number of remaining downlink resources in the downlink candidate time slot is greater than or equal to the number of downlink resources that need to be occupied by this service specified in the user resource requirements.

In step S503, if both the uplink and downlink candidate time slot sets are empty, go to step S513.

Step S504, according to the determined priority direction.

Determine the priority direction according to the asymmetry of the uplink and downlink traffic volume of the business; for users whose downlink traffic volume is greater than the uplink traffic volume, apply the downlink priority criterion; for users whose uplink traffic volume is greater than the uplink traffic volume, apply the uplink priority criterion; If the traffic volume is approximately equal (that is, symmetrical business), then select the restricted party priority criterion (uplink or downlink priority criterion) according to the network resource characteristics (uplink resource is limited or downlink resource is limited); or

Determine the priority direction according to the characteristics of network resources; if the network uplink resources are limited, the uplink priority principle is adopted; if the network downlink resources are limited, the downlink priority principle is adopted.

Step S505, judge whether it is the principle of uplink priority, if it is uplink priority, go to step S506, if it is downlink priority, go to step S510.

Step S506, for the case of uplink priority, perform priority queuing for all uplink candidate time slots in the uplink direction.

Step S507, in the downlink direction of the carrier corresponding to the highest priority time slot, sort the priority of the time slots.

Step S508, determine whether the time slot corresponding to the highest priority in the downlink direction meets the resource requirements, if so, proceed to step S509, otherwise perform resource integration on this time slot (step S515), and then determine whether the integration is successful (step S516), if so, Then go to step S509, otherwise end.

Step S509, in the time slot with the highest priority, allocate the code resource of the time slot to the user, and end. The code resource allocation of the time slot includes: queuing up the priority of the channelization code in the time slot first, and the priority of the channelization code is determined according to the spreading factor, and the smaller the spreading factor is, the priority of the channelization code is The higher the level; then allocate the channelization code with high priority to the user according to the principle of compactness.

Step S510, for the case of downlink priority, perform priority queuing for all time slots in the downlink direction.

Step S511 , in the uplink direction corresponding to the highest priority time slot, sort the priority of the time slots.

Step S512, determine whether the time slot with the highest priority in the uplink direction meets the resource requirements, if so, proceed to step S509, otherwise perform resource integration on this time slot (step S515), determine whether the resource integration is successful (step S516), if the integration is successful Then go to step S509, otherwise end.

Step S513, when all time slots do not meet the resource requirements, trigger resource integration for the time slots. When the number of resources occupied by users is less than the maximum number of resources in a time slot, the system needs to integrate resources for the time slot with the highest priority in the priority direction.

Step S514, if successful, execute S504, otherwise end.

The above discloses a method of combining carriers and time slots for queuing. The above carrier/time slot refers to a time slot determined by a carrier number plus a time slot number. Since the uplink and downlink are performed separately, the carrier/time slot with the highest priority in the uplink and downlink directions may not be on the same carrier. At this time, the carrier with the highest priority in the priority direction can be selected according to the uplink (or downlink) priority principle. /slot, which triggers the resource integration process of the carrier to ensure that the resources allocated to one user are on one carrier. That is: determine whether the resources in the other direction of the carrier where the time slot with high priority in the priority direction is located meet the user resource requirements, and if so, directly allocate the corresponding code resource to the user in the time slot according to the code allocation principle, otherwise, Resource integration is performed first in the time slot, and then corresponding code resources are allocated in the time slot according to the code allocation principle, thereby determining the channel used by the user's service.

The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art should fall within the protection scope of the present invention.

Claims (12)

1. A channel priority queuing method for a multi-carrier communication system, characterized in that it comprises: (1) When a user initiates a channel request, the system obtains the resource requirement of the user from the request; (2) The system finds a carrier that meets the resource requirements of the user from all carriers as a candidate carrier, and selects the carrier with the highest priority from the candidate carriers; (3) Select a time slot with high priority from the carrier with the highest priority, and allocate corresponding code resources in the time slot according to the code allocation principle, thereby determining the channel used by the user; Wherein, allocating corresponding code resources according to the code allocation principle in the time slot includes: Queue the priority of the channelization code in the time slot, the priority of the channelization code is determined according to the spreading factor, the smaller the spreading factor is, the higher the priority of the channelization code is; the priority is assigned according to the principle of compactness The higher-level channelization code is given to the user. 2. The channel priority queuing method of the multi-carrier communication system as claimed in claim 1, wherein step (2) further comprises: When the system does not find a carrier that meets the user resource requirements, select a carrier that meets the user resource requirements in the uplink or downlink direction as a candidate carrier, and select the carrier with the highest priority from the candidate carriers; The carrier performs resource integration in another direction. 3. The channel priority queuing method of a multi-carrier communication system according to claim 1 or 2, wherein the carrier priority is determined according to the following steps: Determine the priority direction of the carrier according to the user service characteristics or network resource characteristics. When determining the priority direction of the carrier based on the user service characteristics, the direction with the most traffic in the uplink and downlink traffic is the priority direction. Determine the carrier direction based on the network resource characteristics. In the priority direction, the direction with limited resources among the uplink and downlink resources is the priority direction; Determine the priority of the carrier according to the priority criterion in the priority direction, so as to find the carrier with the highest priority. 4. The channel priority queuing method of a multi-carrier communication system according to claim 3, wherein the priority criterion in the priority direction is that the more power resources in the priority direction, the smaller the interference or the smaller the number of basic wireless unit BRU resources. More carriers have higher priority. 5. The channel priority queuing method of a multi-carrier communication system according to claim 3, wherein the priority criterion in the priority direction is that the greater the measurement index S of the carrier in the priority direction, the higher the priority of the carrier , where the carrier index S is obtained in the following way: The measurement index S of each carrier is obtained according to S=Q1*M1+Q2/M2+Q3*M3, where Q1, Q2 and Q3 are the preset priority direction power resources, interference and BRU resources in the carrier priority Considering the proportion, M1 is the priority direction power number of the carrier, M2 is the interference coefficient of the carrier, and M3 is the number of BRU resources of the carrier. 6. The channel priority queuing method of a multi-carrier communication system according to claim 1, wherein the time slot priority is sorted according to the time slot load balancing principle, and the priority of the time slot with the most remaining BRU resources is highest level, or The time slot priority is sorted according to the interference of the time slots, and the time slot with the least interference has the highest priority. 7. The channel priority queuing method of a multi-carrier communication system according to claim 1, wherein step (3) is specifically: (a1) Judging whether resources need to be arranged across time slots, if so, select the corresponding number of time slots according to the priority order, and allocate the corresponding code resources of each time slot to the users to be accessed, otherwise proceed to step (a2 ); (a2) Determine whether the highest priority time slot can meet the needs of users. If so, allocate the corresponding code resources of this time slot to the users who will be accessed; otherwise, after resource integration of the time slots, the corresponding The code resources are allocated to the users who will access. 8. A channel priority queuing method for a multi-carrier communication system, characterized in that it comprises: (1) When a user initiates a channel request, the system obtains the resource requirement of the user from the request; (2) The system selects time slots that meet user resource requirements as uplink candidate time slots and downlink candidate time slots according to the uplink direction and downlink direction, and determines the priority direction; (3) Select a time slot with high priority from the candidate time slots in the priority direction, and allocate corresponding code resources in the time slot according to the code allocation principle, thereby determining the channel used by the user service; Wherein, allocating corresponding code resources according to the code allocation principle in the time slot includes: Queue the priority of the channelization code in the carrier and time slot with the highest priority, the priority of the channelization code is determined according to the spreading factor, the smaller the spreading factor, the higher the priority of the channelization code; Channelization codes with high priority are allocated to the users according to the principle of compactness. 9. The channel priority queuing method of a multi-carrier communication system as claimed in claim 8, wherein step (3) further comprises: m1: Determine whether the resource in the other direction of the carrier where the time slot with high priority in the priority direction is located meets the resource requirements of the user. If so, allocate the corresponding code resource to the user directly in the time slot according to the code allocation principle, otherwise, proceed to step m2; m2: first perform resource integration in the time slot, and then allocate corresponding code resources in the time slot according to the code allocation principle, thereby determining the channel used by the user's business. 10. The channel priority queuing method for a multi-carrier communication system according to claim 8, wherein the time slot is jointly determined by the carrier number and the time slot number. 11. The channel priority queuing method for a multi-carrier communication system according to claim 8, characterized in that: the time slot priority is sorted according to the time slot load balancing principle, and the priority of the time slot with the most remaining BRU resources highest, or The time slot priority is sorted according to the interference of the time slots, and the time slot with the least interference has the highest priority. 12. The channel priority queuing method of a multi-carrier communication system according to claim 8, characterized in that step (2) further comprises: when the system does not find a time slot that meets the resource requirements of the user, first assigning the time slot to the time slot Integrate resources.

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