WO2012174912A1

WO2012174912A1 - Method and device for sending interference coordination request

Info

Publication number: WO2012174912A1
Application number: PCT/CN2012/073034
Authority: WO
Inventors: 刘阳
Original assignee: 电信科学技术研究院
Priority date: 2011-06-21
Filing date: 2012-03-26
Publication date: 2012-12-27
Also published as: CN102223687B; CN102223687A

Abstract

Disclosed are a method and device for sending an interference coordination request. The method comprises: a base station obtains the attribute information of a cell; if the attribute information of the cell is VIP cell, then the base station sends an interference coordination request to the base station of a neighboring cell; if the attribute information of the cell is non-VIP cell, then the base station obtains the attribute information of the neighboring cell; if the attribute information of the neighboring cell is non-VIP cell, then the base station sends the interference coordination request to the base station of the neighboring cell; and if the attribute information of the neighboring cell is VIP cell, then the base station determines not to send the interference coordination request to the base station of the neighboring cell. In the embodiment of the present invention, the performance experience of a user equipment in the VIP cell can be better ensured.

Description

Method and device for transmitting interference coordination request The present application claims to be submitted to the Chinese Patent Office on June 21, 2011, the application number is 201110167457.8, and the invention title is "a method and device for transmitting interference interference request" Priority is hereby incorporated by reference in its entirety. Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for transmitting an interference coordination request. Background technique

The LTE (Long Term Evolution) system defines a number of upper-level devices for the ICIC (Inter-Cell Interference Coordination) technology, including: High (High Interference Indication) , RNTP (Relative Narrowband Transmission Power), 01 (Overload Indication), ΗΠ, 01 for the uplink, and RNTP for the downlink. The above reported amount is generated by the base station and organized into load information, which is transmitted through a logical link (X2) between the base stations, thereby facilitating interference coordination between cells for the uplink and the downlink.

In the prior art, each cell may send load information to neighboring cells. After receiving load information from neighboring cells, each cell needs to be processed based on load information to adjust and limit the center and edge user equipment of the cell. The available resources and resource usage priorities are used to achieve interference coordination.

In carrying out the process of the present invention, the inventors have found that at least the following problems exist in the prior art:

Any cell may send an interference coordination request (ie, load information) to the neighboring cell, and any cell needs to perform corresponding processing after receiving the interference coordination request, which is disadvantageous to the use of the user equipment in the VIP cell, and limits the resource allocation of the cell. Flexibility, no guarantee

The performance of users in the VIP cell. Summary of the invention

Embodiments of the present invention provide a method and a device for transmitting an interference coordination request to ensure

The performance of users in the VIP cell.

In order to achieve the above object, an embodiment of the present invention provides a method for transmitting an interference coordination request, including:

The base station acquires the attribute information of the cell;

If the attribute information of the cell is a VIP cell, the base station sends an interference coordination request to the base station of the neighboring cell;

If the attribute information of the cell is a non- VIP cell, the base station acquires neighbor cell attribute information;

If the neighbor cell attribute information is a non- VIP cell, the base station sends an interference coordination request to the base station of the neighboring cell;

If the neighbor cell attribute information is a VIP cell, the base station determines not to transmit an interference coordination request to the base station of the neighboring cell.

An embodiment of the present invention provides a base station device, including:

a first acquiring module, configured to acquire attribute information of the current cell;

a first sending module, configured to: when the local cell attribute information is a VIP cell, send an interference coordination request to the base station of the neighboring cell;

a second ear block, configured to acquire neighboring cell attribute information when the attribute information of the cell is a non-VIP cell;

a second sending module, configured to: when the neighbor cell attribute information is a non-VIP cell, send an interference coordination request to the base station of the neighboring cell;

And a determining module, configured to: when the neighbor cell attribute information is a VIP cell, determine not to send an interference coordination request to the base station of the neighboring cell.

Compared with the prior art, the present invention has at least the following advantages: better protection

Performance experience of user equipment under the VIP cell. DRAWINGS

1 is a schematic flowchart of a method for transmitting an interference coordination request according to Embodiment 1 of the present invention;

2 is a schematic diagram showing the setting of a parameter of the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base station apparatus according to Embodiment 2 of the present invention. detailed description

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

In the current carrier's network, for certain cells and the user equipment covered by these cells, a higher priority should be given to ensure that user equipments in these cells can obtain a better user experience. In a VIP cell, if the user equipment in the VIP cell cannot obtain a good user experience, it will adversely affect the operator's operational capability and brand building promotion. Among them, the VIP community includes but is not limited to: government office building, operator's flagship business hall, important meeting place or meeting place.

In the prior art, ICIC technology is introduced in an LTE system to ensure coverage and improve cell edge user performance by coordinating the use of time-frequency resources and power resources among multiple cells. However, the above process does not take into account the VIP cell. Any cell can send an interference coordination request to the neighboring cell, and any cell needs to perform corresponding processing after receiving the interference coordination request. If the VIP cell receives the interference coordination request, the VIP The cell will also respond to limit the resource usage of the community.

For example, if the VIP cell receives the 相邻 of the neighboring cell (in the case of the interference coordination request), the VIP cell limits the edge user to the PRB (Physical Resource Block) that is identified as 1 in the 小区 cell. The device uses the PRB or reduces the priority of the edge user equipment to use these PRBs. If the VIP cell receives the ΗΠ of multiple neighboring cells, the VIP cell will impose more restrictions on the resource allocation of the edge user equipment. It can be seen that the prior art limits the allocation of VIP cell resources. The flexibility of the edge user equipment under the VIP cell cannot be guaranteed.

The present invention provides a method and a device for transmitting an interference coordination request, and the user equipment (especially the edge user equipment) in the VIP cell can obtain a better user according to the characteristics of the VIP cell protection and the ICIC technology. Experience.

The technical solutions in the present invention are clearly and completely described in the following with reference to the accompanying drawings in which: FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

Embodiment 1

A first embodiment of the present invention provides a method for transmitting an interference coordination request. A non-VIP cell (ie, a normal cell) adjacent to a VIP cell cannot send an interference coordination request (ie, load information) to a VIP cell, and the VIP cell can be adjacent to the The non-VIP cell sends an interference coordination request, and the adjacent non-VIP cell needs to process the interference coordination request sent by the VIP cell. As shown in Figure 1, the method includes the following steps:

Step 101: The base station acquires the attribute information of the current cell. The cell attribute information may be a VIP cell or a non-VIP cell. If the cell attribute information is a VIP cell, step 102 is performed. If the cell attribute information is a non-VIP cell, step 103 is performed.

In actual applications, the cell attribute information of each cell can be configured on each base station by using O&M (Operation & Maintenance). Therefore, the base station can directly obtain the attribute information of the cell by facilitating the configuration.

Step 102: The base station sends an interference coordination request to the base station of the neighboring cell. The attribute information of the neighboring cell is a VIP cell or a non-VIP cell, and the base station may send an interference coordination request to the base station of the neighboring cell.

Step 103: The base station acquires neighbor cell attribute information. If the neighbor cell attribute information is a non-VIP cell, step 104 is performed. If the neighbor cell attribute information is a VIP cell, step 105 is performed.

Since the cell attribute information of each cell is already configured on each base station, the base station can directly obtain the neighbor cell attribute information by facilitating the configuration. Step 104: The base station sends an interference coordination request to the base station of the neighboring cell.

When the inter-cell and the neighboring cell are both non-VIP cells, the base station may send an interference coordination request to the base station of the neighboring cell, and the process is not described in the embodiment of the present invention. .

Step 105: The base station determines not to send an interference coordination request to the base station of the neighboring cell. When the local cell is a non-VIP cell and the neighboring cell is a VIP cell, in the embodiment of the present invention, the base station cannot send an interference coordination request to the base station of the neighboring cell, that is, the non-VIP cell adjacent to the VIP cell is not allowed to the VIP cell. Send an interference coordination request.

In the step 102 of the foregoing process, the process for the base station to send the interference coordination request to the base station of the neighboring cell is specifically: the base station according to the preset period (such as the time interval T, the time interval T is

In the LTE standard, it can be >=20ms. In the full bandwidth range (the LTE system supports a maximum of 20MHz bandwidth), the frequency resource allocation is performed according to its own scheduling algorithm policy. That is, the scheduler of the VIP cell allocates frequency resources when scheduling the user equipment of the local cell. It is not affected by neighboring cells, and it is not necessary to consider the parameters of neighboring cells. Thereafter, the base station determines the HII parameter according to the frequency resource allocation result; and the base station sends an interference coordination request carrying the HII parameter to the base station of the neighboring cell.

It should be noted that if the ΗΠ parameter determined in the current period does not change from the HII parameter determined in the previous period, the current period may not send an interference coordination request carrying the HII parameter to the base station of the neighboring cell; otherwise, the base station to the neighboring cell Send an interference coordination request carrying the ΗΠ parameter.

In the foregoing process, the ΗΠ parameter is used to indicate the PRB allocated by the base station to the edge user equipment, and the base station of the neighboring cell avoids the PRB when scheduling the edge user equipment; and the ΗΠ parameter has the following characteristics: prediction indication; one on each PRB Bit, 1 indicates that the edge user equipment will use or preferentially use this PRB, 0 means that the edge user equipment does not use or does not use this PRB preferentially; event triggering; minimum update interval is 20ms.

In the embodiment of the present invention, between the current period and the next period in which the interference coordination request is sent, the base station may schedule the edge user equipment by using the PRB indicated in the 周期 parameter of the current period, that is, the scheduler of the local cell sends the current period. The edge user equipment is scheduled on the available PRB resources indicated in the parameter (ie, the resource indicating that the PRB is 1). after that, After receiving the interference coordination request carrying the parameter, if the base station of the neighboring cell determines that the HII parameter is from the VIP cell, the edge user under the base station of the neighboring cell is not allowed to be scheduled on the PRB indicated by 1 in the HII parameter. device.

In addition, the process of determining, by the base station, the parameter according to the frequency resource allocation result includes: a frequency resource allocated by the base station to the edge user equipment according to the previous period, and a frequency resource allocated to the edge user equipment when the current period is set. , Determine the HII parameters (ie determine the PRB settings).

Considering that the user equipment under the VIP cell is mostly stationary, the ΗΠ parameter set based on the previous cycle can be determined when determining the ΗΠ parameter to be transmitted in the current cycle. That is, if K edge user equipments are scheduled when the parameter is set in the previous cycle, the PRB resource set allocated for UEi is Ri, i = l , 2, ..., K; the current period setting ΗΠ parameter needs to be scheduled L For the edge user equipment, the set of PRB resources allocated for UEj is Rj, j = 1 , 2, ..., L; then the uplink single carrier characteristics of the LTE system indicate that the uplink PRB resource set is continuous, and the ΗΠ parameters of the period include :

When the ΗΠ parameter needs to be set, UEi is not an edge user device, then

The resource Ri corresponding to UEi is not included in the resource.

If the number of PRBs included in the parameter is less than Nreq, the number of PRBs reserved for the edge user equipment in the HII parameter is taken as Nreq, and the remaining PRBs (the number of remaining PRBs are: Nreq minus the parameters included in the parameter) The selection method of the number of PRBs of 1 is as follows: Try to be continuous with the PRB indicated in the parameter to ensure a certain peak rate.

It should be noted that Nreq is the edge user equipment resource requirement Nreq (the number of PRBs) obtained according to the spectrum efficiency and data rate requirements of the edge user equipment. Nreq= ( PRBOccupy/DataRate ) *DataRateReqSum; where PRBOccupy is the average number of PRBs occupied by each edge subframe of the edge user equipment, DataRate is the total actual transmission rate of all edge user equipments, and DataRateReqSum is used for all edges. The sum of the rate requirements of the upstream services of the user equipment.

In order to clarify the determination process of the above ΗΠ parameters more clearly, the following is a exemplification of the ΗΠ setting diagram shown in the figure.

When the parameter is set in the previous cycle, the scheduler schedules two edge user equipments UE1 and UE2, and the PRB resources allocated for UE1 and UE2 are as shown in FIG. 2. When the current period is set, the scheduler decides to schedule. The two edge user equipments UE2 and UE3 determine that the UE2 is scheduled for the current period and the previous period. Therefore, the HII parameter is set for the resources allocated by the UE2 in the current period, that is, the parameter is R1U (R2UR3). If UE1 determines that UE1 is no longer an edge user equipment when the 周期 parameter is set in the current period, the ΗΠ parameter is R2 U R3.

Wherein, R1 represents a set of PRB resources allocated by the scheduler to UE1 at a time when the parameter is set in the previous cycle; R2 and R3 represent a set of PRB resources allocated by the scheduler to UE2 and UE3 at the time when the HII parameter is set in the current cycle. .

Embodiment 2

Based on the same inventive concept as the foregoing method, the embodiment of the present invention further provides a base station device. As shown in FIG. 3, the base station device includes:

The first ear is used to obtain the attribute information of the cell;

The first sending module 12 is configured to: when the attribute information of the local cell is a VIP cell, send an interference coordination request to the base station of the neighboring cell;

The second ear is used to obtain the neighbor cell attribute information when the attribute information of the cell is a non-VIP cell;

The second sending module 14 is configured to: when the neighbor cell attribute information is a non-VIP cell, send an interference coordination request to the base station of the neighboring cell;

The determining module 15 is configured to: when the neighbor cell attribute information is a VIP cell, determine not to send an interference coordination request to the base station of the neighboring cell.

The first sending module 12 is specifically configured to perform frequency resource allocation in a full bandwidth according to a preset period, and determine a high interference indication parameter according to a frequency resource allocation result; and send, to the base station of the neighboring cell, the carrying Interference coordination request for parameters.

The ΗΠ parameter is used to indicate a physical resource block PRB allocated to an edge user equipment, The base station of the neighboring cell circumvents the PRB when scheduling the edge user equipment; and the edge user equipment is scheduled by the PRB indicated in the 周期 parameter of the current period between the current period and the next period in which the interference coordination request is sent.

The ΗΠ parameter is used to indicate the PRB allocated by the base station to the edge user equipment; the first sending module 12 is further configured to allocate the frequency resource allocated to the edge user equipment according to the previous period, and the current period. Set the frequency resource allocated to the edge user equipment when setting the parameter, and determine the parameter.

The first sending module 12 is further configured to: if the K edge user equipments are scheduled when the parameter is set in the previous cycle, the PRB resource set allocated for the UEi is Ri, i = 1 , 2, ..., K; When the current period is set, the L edge user equipments need to be scheduled, and the PRB resource set allocated for UEj is Rj, j = 1 , 2, ..., L;

ΗΠ parameters include:

When setting ΗΠ parameter, UEi is not an edge user device, then

The resource Ri corresponding to UEi is not included in the resource.

If the number of PRBs included in the parameter is less than Nreq, the number of PRBs reserved for the edge user equipment in the HII parameter is taken as Nreq; the Nreq is obtained according to the spectrum efficiency and data rate requirements of the edge user equipment.

Nreq: ( PRBOccupy/DataRate ) *DataRateReqSum; PRBOccupy is the average number of PRBs per edge subframe of the edge user equipment, DataRate is the total actual transmission rate of all edge user equipments, and DataRateReqSum is the rate of uplink services of all edge user equipments. The sum of the needs.

Wherein, the modules of the device of the present invention may be integrated or integrated. The above modules can be combined into one module, or can be further split into multiple sub-modules.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, To pass the hardware, but in many cases the former is a better implementation. Based on this understanding, a form of software product is embodied, the computer software product being stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the present invention. The method described in the examples.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred embodiment, and the modules or processes in the drawings are not necessarily required to implement the invention.

Those skilled in the art can understand that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

Rights request

A method for transmitting an interference coordination request, comprising: acquiring, by a base station, attribute information of the current cell;

The method according to claim 1, wherein when the local cell attribute information is a VIP cell, the base station sends an interference coordination request to the base station of the neighboring cell, including: the base station is in full according to a preset period. Performing frequency resource allocation within the bandwidth range, and determining a high interference indication parameter according to the frequency resource allocation result;

The base station sends an interference coordination request carrying the parameter to a base station of a neighboring cell.

The method according to claim 2, wherein the parameter is used to indicate a physical resource block PRB allocated by the base station to an edge user equipment, and the base station of the neighboring cell avoids the location when scheduling the edge user equipment. The PRB is configured to schedule the edge user equipment by using the PRB indicated in the 周期 parameter of the current period between the current period and the next period in which the interference coordination request is sent.

The method according to claim 2, wherein the parameter is used to indicate a PRB allocated by the base station to an edge user equipment, and the base station determines a high interference indication parameter according to a frequency resource allocation result, including:

The base station determines the ΗΠ parameter according to the frequency resource allocated to the edge user equipment when the ΗΠ parameter is set in the previous period, and the frequency resource allocated to the edge user equipment when the current period is set ΗΠ parameter.

The method according to claim 4, wherein the base station allocates a frequency resource allocated to the edge user equipment according to the previous period, and allocates the edge resource to the edge user equipment when the HII parameter is set in the current period. Frequency resources, determining HII parameters, including:

If K edge user equipments are scheduled when the parameter is set in the previous cycle, the PRB resource set allocated for UEi is Ri, i = 1 , 2, ..., Κ; the current period setting ΗΠ parameter needs to be scheduled L The edge user equipment, the PRB resource set allocated for UEj is Rj, j = l, 2, ..., L;

Then, the determining, by the base station, the parameter of the current period includes:

6. The method of claim 5, wherein if the current period is set

When the HII parameter is used, UEi is not an edge user equipment.

Not included in (O ^J=1 ^)

The resource Ri corresponding to UEi.

7. The method of claim 5, wherein if the parameter is included in the parameter If the number of PRBs is smaller than Nreq, the number of PRBs reserved for the edge user equipment in the HII parameter is taken as Nreq; the Nreq is obtained according to the spectrum efficiency and data rate requirements of the edge user equipment.

The method of claim 7, wherein Nreq=(PRBOccupy/DataRate)*DataRateReqSum; PRBOccupy is the average number of PRBs occupied by each edge subframe of the edge user equipment, and DataRate is the total uplink of all edge user equipments. The actual transmission rate, DataRateReqSum, is the sum of the rate requirements for the upstream services of all edge user equipment.

A base station device, comprising:

10. The base station device according to claim 9, wherein:

The first sending module is configured to perform frequency resource allocation in a full bandwidth according to a preset period, and determine a high interference indicator according to a frequency resource allocation result; and send the carrying parameter to a base station of a neighboring cell. Interference coordination request.

The base station device according to claim 10, wherein the parameter is used to indicate a physical resource block PRB allocated to an edge user equipment, and the base station of the neighboring cell avoids the PRB when scheduling the edge user equipment. Between the current period and the next period during which the interference coordination request is sent, the edge user equipment is scheduled by the PRB indicated in the 周期 parameter of the current period.

The base station device according to claim 10, wherein the parameter is used to indicate a PRB allocated by the base station to an edge user equipment;

The first sending module is further configured to determine a HII parameter according to a frequency resource allocated to the edge user equipment when the parameter is set in the previous cycle, and a frequency resource allocated to the edge user equipment when the current period is set to the parameter.

13. The base station device according to claim 12, wherein

The first sending module is further configured to: if the K edge user equipments are scheduled when the parameter is set in the previous cycle, the PRB resource set allocated for the UEi is Ri, i = 1 , 2, ..., K; When the period is set, the L edge user equipments need to be scheduled, and the PRB resource set allocated for UEj is Rj, j = 1 , 2, ..., L;

Then determine the parameters of the current period including:

!■=1,''

.

The base station device according to claim 13, wherein if the UEi is not an edge user equipment when the current period is set, the resource Ri corresponding to the UEi is not included in ί ⁼¹ ' ^J=l .

The base station device according to claim 13, wherein if the number of PRBs included in the parameter is less than Nreq, the number of PRBs reserved for the edge user equipment in the HII parameter is taken as Nreq; Obtained according to the spectral efficiency and data rate requirements of the edge user equipment.

The base station device according to claim 15, wherein Nreq=

(PRBOccupy/DataRate) *DataRateReqSum; PRBOccupy is the average number of PRBs per edge subframe of the edge user equipment. DataRate is the total actual transmission rate of all edge user equipments. DataRateReqSum is the rate requirement of uplink services of all edge user equipments. with.