CN1722860A - Method of multi-carrier frequency cell radio resource report and management - Google Patents

Abstract

The invention discloses a method for reporting wireless resources of a multi-carrier frequency cell and a resource management method, comprising the following steps: the base station acquires resource information of each time slot on each carrier frequency of the multi-carrier frequency cell, which may be resource capability information of the time slot, or Whether the information is available; the base station reports the obtained carrier frequency resource information to the radio network controller; the radio network controller obtains and records the carrier frequency resource information contained in the message after receiving the report message from the base station; the wireless The network controller compares the resource capability required by the service with the carrier frequency resources of the accessed multi-carrier frequency cell, and allocates resources for the service. In the method of the present invention, when the base station reports the wireless resources of the multi-carrier frequency cell to the wireless network controller, it is carried out according to the time slot resource conditions on each carrier frequency, so that the wireless network controller can accurately know the actual resource capability of the base station, and avoid The wireless link bearer is established on a carrier frequency not supported by the base station, which improves the success rate of user service establishment.

Description

Method for reporting and managing wireless resources of multi-carrier frequency cells

technical field

The invention relates to a wireless resource management of a mobile communication system, in particular to a method for reporting and managing wireless resources in the case of multi-carrier frequency cell configuration.

Background technique

For mobile communication systems, the expansion of system capacity is a problem that manufacturers need to consider. Compared with the Wideband Code Division Multiple Access (WCDMA) system, the current Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system has relatively low capacity. In order to increase the system capacity, it is undoubtedly an important means for TD-SCDMA system to increase the system capacity by carrying out multi-carrier frequency coverage in the same sector/cell.

In order to reduce the interference of broadcast channels between carriers and improve system efficiency, in the case of multiple carrier frequencies, pilot and broadcast information are only sent on one carrier frequency of the cell/sector, and multiple frequency points use one common broadcast. For example, there are N carrier frequencies in a cell/sector, numbered 1, 2...N, assuming that carrier frequency 1 sends pilot and broadcast information, while other carrier frequencies do not send pilot and broadcast information. broadcast information. Then the carrier frequency 1 is called the main carrier frequency, and the other carrier frequencies 2...N are called auxiliary carrier frequencies. The main carrier frequency and the auxiliary carrier frequency use the same scrambling code and basic intermediate code (midamble), the common control channel is the same, and the configuration of the uplink and downlink switching points is the same. The mobile terminal can obtain the system information of the cell and the frequency configuration of other secondary carrier frequencies by searching the primary carrier frequency.

According to the current technology, in the case of multiple carrier frequencies, the resource information of the base station (Node-B) is calculated based on the resource capability of the entire cell, and the resource information of each carrier frequency is not distinguished. As shown in Figure 1 and Figure 2, when Node-B reports resources to the Radio Network Controller (RNC) through the Resource Status Indication message and the Audit Response message, the message contains the resource capability information of the entire cell, and the RNC cannot Knowing the resource situation of each carrier frequency on Node-B leads to inconsistency between the resource information of the two, as shown in FIG. 3 .

This brings about a problem. Once the auxiliary carrier frequency fails, the RNC cannot know it, so that the RNC will also allocate it to the auxiliary carrier frequency when allocating traffic channels, resulting in the failure of wireless link establishment, which greatly affects the system connection. into performance.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for reporting wireless resources of a multi-carrier frequency cell, which can enable the RNC to obtain resource information of each carrier frequency of the multi-carrier frequency cell on Node-B.

In order to achieve the above object, the present invention provides a method for reporting radio resources of a multi-carrier frequency cell, comprising the following steps:

(a) The base station obtains the resource information of each time slot on each carrier frequency of the multi-carrier frequency cell;

(b) The base station reports the obtained carrier frequency resource information to the radio network controller;

(c) After receiving the report message from the base station, the radio network controller acquires and records the information of the carrier frequency resources included in the message.

Further, the above reporting method may have the following characteristics: the step (a) base station obtains the resource capability of the time slot calculated according to the code channel information of each time slot on each carrier frequency, and can use the resource capability of the time slot on the time slot Simulated as the number of code channels when the spreading factor is equal to 16, the capability value of the unavailable time slot is 0; the step (b) the base station reports to the radio network controller on each carrier frequency through an audit response message or a resource status indication message time slot capability information with the identification of the carrier frequency.

Further, the above-mentioned reporting method may have the following characteristics: the step (a) base station obtains information on whether the resources of each time slot on each carrier frequency are available, and obtains unavailable time slots and carrier frequencies; the step (b) The base station reports the unavailable time slots and carrier frequencies to the radio network controller through the resource block request message; after the step (c) the radio network controller records the unavailable time slots and carrier frequencies, A resource block response is also returned to the base station.

Another technical problem to be solved by the present invention is to provide a management method for wireless resources of a multi-carrier frequency cell, which can enable the RNC to obtain the resource information of each carrier frequency of the multi-carrier frequency cell on the Node-B, and improve the success of wireless link establishment Rate.

In order to achieve the above object, the present invention provides a method for managing wireless resources in a multi-carrier frequency cell, comprising the following steps:

(a) The base station obtains the resource information of each time slot on each carrier frequency of the multi-carrier frequency cell;

(b) The base station reports the obtained carrier frequency resource information to the radio network controller;

(c) After receiving the report message from the base station, the radio network controller acquires and records the information of the carrier frequency resource included in the message;

(d) The radio network controller compares the resource capability required by the service with the carrier frequency resources of the accessed multi-carrier frequency cell, and allocates resources for the service.

Further, the above reporting method may have the following characteristics: in the step (d), the radio network controller compares the resource capability required by the service with the time slot on each carrier frequency of the accessed multi-carrier frequency cell and the time slot on the time slot Compared with the code channel information, the carrier frequency, time slot and code channel are allocated for the service.

Further, in the wireless resource management method, steps (a) to (c) may have any features of the wireless resource reporting method of the present invention.

It can be seen from the above that when the base station of the present invention reports the wireless resources of the multi-carrier frequency cell to the radio network controller through the resource block request message, the resource status indication message and the audit response message, it is based on the time slot resources on each carrier frequency. Yes, the RNC can accurately know the actual resource capability of the Node-B. Therefore, when the wireless link is established, the RNC allocates the carrier frequency for the service and the rationality of the time slot and code channel information on the carrier frequency is guaranteed, avoiding the establishment of the wireless link bearer on the carrier frequency not supported by the Node-B. The success rate of user service establishment is improved.

Description of drawings

Fig. 1 is the schematic diagram that Node-B sends resource status instruction to RNC in the TD-SCDMA system;

Fig. 2 is a schematic diagram of resource auditing between Node-B and RNC in the TD-SCDMA system;

FIG. 3 is a schematic diagram of Node-B reporting resource information to RNC in the prior art;

FIG. 4 is a flow chart of the resource reporting and allocation process in the first embodiment of the present invention;

5 is a schematic diagram of Node-B sending a resource block request to RNC according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of Node-B reporting resource information to RNC according to the present invention.

Detailed ways

first embodiment

In this embodiment, Node-B in the TD-SCDMA system reports resources to the RNC through a resource status indication message. As shown in Figure 4, the resource reporting and corresponding allocation process include the following steps:

Step 110, the Node-B discovers that the internal resources of the multi-carrier frequency cell have changed;

Step 120, Node-B acquires the number and number of carrier frequencies in the cell, and the number and number of time slots on each carrier frequency according to the physical resource information stored in the cell;

Step 130, Node-B calculates the resource capacity value on each time slot on each carrier frequency of the cell, which is equal to the number of code channels when SF=16 is simulated on the time slot, that is, the number of code channels × (16/spreading factor ), the resource capability value is greater than or equal to 0 and less than or equal to 16, and the value of the unavailable time slot is 0;

Step 140, Node-B fills in the resource capability of each time slot on each carrier frequency, and sends it to the RNC through a resource status indication message. In order to distinguish different carrier frequencies, the resource information of each carrier frequency has the carrier frequency logo;

Step 150, after the RNC receives the resource status indication message, according to the resource capability information of each time slot on each carrier frequency in the message, obtain the code channel information of the time slot on the carrier frequency, including the number of code channels and the expansion of the time slot frequency factor, and obtain and record unavailable time slots and carrier frequencies (unavailable carrier frequency means that all time slots on the carrier frequency are unavailable);

Step 160, when the RNC establishes the user's service resources, obtains the resource capability required by the service according to the characteristics of the service;

Step 170, the RNC compares the resource capability required by the user service with the carrier frequency resources of the accessed multi-carrier frequency cell (here refers to the time slot on the carrier frequency and the code channel information on the time slot), and allocates resources for the service, including carrier frequency resources. Frequency, time slots on the carrier frequency, and allocation of code channels on the time slots.

second embodiment

In this embodiment, Node-B in the TD-SCDMA system reports resources to RNC through an audit response message, and the resource reporting and corresponding allocation process include the following steps:

Step 210, Node-B receives the resource audit request sent by RNC, and finds the multi-carrier frequency cell specified by the audit request;

Step 220, the Node-B obtains the number and number of carrier frequencies in the cell, and the number and number of time slots on each carrier frequency according to the physical resource information stored in the cell;

Step 230, Node-B calculates the resource capability value of each time slot on each carrier frequency of the cell, which is equal to the number of code channels when SF=16 is simulated on the time slot, and the value of the unavailable time slot is 0;

Step 240, Node-B fills in the resource capability of each time slot on each carrier frequency, and sends it to RNC through an audit response message;

Step 250, after the RNC receives the audit response message, according to the resource capability information of each time slot on each carrier frequency in the message, obtain the code channel information of the time slot on the carrier frequency, and obtain and record the unavailable time slot and carrier frequency information;

Step 260, when the RNC establishes the user's service resource, obtains the resource capability required by the service according to the characteristics of the service;

In step 270, the RNC compares the resource capability required by the user service with the carrier frequency resource information of the accessed multi-carrier frequency cell, and allocates resources for the service.

third embodiment

In this embodiment, in the TD-SCDMA system, Node-B reports resource unavailable information to RNC through a resource blocking request message, and the resource reporting and corresponding allocation process include the following steps:

Step 310, the Node-B obtains the resource situation of each time slot on each carrier frequency of the cell, and determines the unavailable time slots on each carrier frequency, and the carrier frequencies for which all time slots are unavailable;

Step 320, the Node-B notifies the RNC of the found unavailable time slot and carrier frequency through a resource block message, as shown in Figure 5;

Step 330, after the RNC receives the blocking request message, obtains and records the unavailable time slots and carrier frequencies in the message, and returns a response;

Step 340, when the RNC allocates resources for services, it only allocates available carrier frequencies and time slots.

To sum up, in the method of the present invention, when Node-B reports the radio resources of a multi-carrier frequency cell to the RNC through the resource block request message, the resource status indication message and the audit response message, it is carried out according to the time slot resources on each carrier frequency , the RNC can confirm the carrier frequency information on the cell and the available time slot information on the carrier frequency, and accurately know the actual resource capability of the Node-B. As shown in Fig. 6, the RNC and the Node-B have resource capability information of each carrier frequency, which ensures the consistency of the resource information of the two.

Therefore, when the wireless link is established, the RNC allocates the carrier frequency for the service and the rationality of the time slot and code channel information on the carrier frequency is guaranteed, avoiding the establishment of the wireless link bearer on the carrier frequency not supported by Node-B , improving the success rate of user service establishment. The method of the present invention is also applicable to other time-division multiplexed multi-carrier frequency configuration systems.

Claims (9)

1, a kind of report method of multi-carrier frequency cell radio resource may further comprise the steps:

(a) base station obtains the resource information of each time slot on each carrier frequency of multi-carrier frequency cell;

(b) base station reports radio network controller with the information of the carrier frequency resource that obtains;

(c) after radio network controller is received the described reporting message of base station, obtain and write down the information of the carrier frequency resource that comprises in this message.

2, report method as claimed in claim 1 is characterized in that, described step (a) base station obtains is the resource capability of this time slot of calculating of the code channel information according to each time slot on each carrier frequency; Described step (b) base station is to report time slot ability information on each carrier frequency by audit response message or resource status Indication message to radio network controller, and has the sign of this carrier frequency.

3, report method as claimed in claim 2 is characterized in that, in the described step (a) is to equal be modeled to spreading factor on the time slot to 16 o'clock code channel number as the resource capability value of this time slot, and this ability value of unavailable time slot is 0.

4, report method as claimed in claim 1 is characterized in that, described step (a) base station obtains is the resource information available whether of each time slot on each carrier frequency, and obtains disabled time slot and carrier frequency; Described step (b) base station is by the inaccessible request message of resource disabled time slot and carrier frequency to be reported to radio network controller; After described step (c) radio network controller is noted described disabled time slot and carrier frequency, also return the inaccessible response of resource to the base station.

5, a kind of management method of multi-carrier frequency cell radio resource may further comprise the steps:

(a) base station obtains the resource information of each time slot on each carrier frequency of multi-carrier frequency cell;

(b) base station reports radio network controller with the information of the carrier frequency resource that obtains;

(c) after radio network controller is received the described reporting message of base station, obtain and write down the information of the carrier frequency resource that comprises in this message;

(d) the radio network controller resource capability that business is required is compared with the carrier frequency resource of access multi-carrier frequency cell, is this traffic assignments resource.

6, management method as claimed in claim 5 is characterized in that, described step (a) base station obtains is the resource capability of this time slot of calculating of the code channel information according to each time slot on each carrier frequency; Described step (b) base station is to report time slot ability information on each carrier frequency by audit response message or resource status Indication message to radio network controller, and has the sign of this carrier frequency; Described step (c) radio network controller also obtains the code channel information of this time slot according to the time slot ability information on described each carrier frequency.

7, management method as claimed in claim 6 is characterized in that, in the described step (a) is to equal be modeled to spreading factor on the time slot to 16 o'clock code channel number as the resource capability value of this time slot, and this ability value of unavailable time slot is 0.

8, management method as claimed in claim 5 is characterized in that, described step (a) base station obtains is the resource information available whether of each time slot on each carrier frequency, and obtains disabled time slot and carrier frequency; Described step (b) base station is by the inaccessible request message of resource disabled time slot and carrier frequency to be reported to radio network controller; After described step (c) radio network controller is noted described disabled time slot and carrier frequency, also return the inaccessible response of resource to the base station.

9, management method as claimed in claim 6, it is characterized in that, in the described step (d) radio network controller be resource capability that business is required with each carrier frequency of access multi-carrier frequency cell on time slot and the code channel information on the time slot compare, be this traffic assignments carrier frequency, time slot and code channel.

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