Nothing Special   »   [go: up one dir, main page]

CN102045826B - The processing method of inter-cell uplink interference and device - Google Patents

The processing method of inter-cell uplink interference and device Download PDF

Info

Publication number
CN102045826B
CN102045826B CN201010584229.6A CN201010584229A CN102045826B CN 102045826 B CN102045826 B CN 102045826B CN 201010584229 A CN201010584229 A CN 201010584229A CN 102045826 B CN102045826 B CN 102045826B
Authority
CN
China
Prior art keywords
base station
mrow
resource block
iot
msub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201010584229.6A
Other languages
Chinese (zh)
Other versions
CN102045826A (en
Inventor
刘锟
鲁照华
罗薇
李卫敏
肖华华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201010584229.6A priority Critical patent/CN102045826B/en
Publication of CN102045826A publication Critical patent/CN102045826A/en
Priority to PCT/CN2011/075285 priority patent/WO2012075788A1/en
Application granted granted Critical
Publication of CN102045826B publication Critical patent/CN102045826B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of processing method and device of inter-cell uplink interference, the method comprises: base station is terminal distribution Resource Block, and wherein Resource Block is used for terminal transmission upstream data; According to Resource Block, the transmitting power of computing terminal; The upstream data that base station receiving terminal uses transmitting power to send.The present invention when ensureing the uplink performance of base station, can reduce inter-cell uplink interference intensity.

Description

Method and device for processing uplink interference between cells
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing uplink interference between cells.
Background
In a broadband wireless communication system, for example, an Orthogonal Frequency Division Multiplexing (OFDM) system, when a base station and different terminals perform uplink data transmission in the same cell, uplink channels are orthogonal to each other, so that uplink interference in the cell can be avoided. However, the base station of the cell may suffer from uplink interference from terminals of other neighboring cells, i.e., inter-cell uplink interference.
Inter-cell uplink interference is an inherent problem of a cellular mobile communication system, and is formed because users using the same frequency resource in each cell interfere with each other.
Fig. 1 is a schematic diagram illustrating a principle of interference formation of inter-cell uplink in a wireless communication system according to the related art, where, as shown in fig. 1, BS1 and BS2 are serving base stations of MS1 and MS2, respectively, and it is assumed that a set of subcarriers allocated by BS1 to MS1 for uplink transmission is SC1, a set of subcarriers allocated by BS2 to MS for uplink transmission is SC2, and an intersection of SC1 and SC2 is SC. If the SC is not the empty set, when the BS2 receives the uplink signal transmitted by MS2, the subcarriers in the set SC will simultaneously receive the radio signal transmitted by MS1, and these signals from MS1 are interference to MS2 and BS 2. If the distance between MS1 and MS2 is small, assuming that both MS1 and MS2 are in the overlapping portion of the coverage areas of the two serving cells, the uplink interference between the cells will be strong, which may cause BS2 to not correctly demodulate the uplink signal transmitted by MS 2.
Therefore, the uplink interference between cells can affect the uplink signal of the base station receiving terminal, thereby seriously affecting the system capacity.
Disclosure of Invention
The present invention is proposed to solve the problem that uplink interference between cells affects uplink signals of a base station receiving terminal, and therefore, a main object of the present invention is to provide a method and an apparatus for processing uplink interference between cells to solve the above problem.
In order to achieve the above object, according to an aspect of the present invention, a method for processing uplink interference between cells is provided.
The method for processing the uplink interference among the cells comprises the following steps: a base station allocates a resource block for a terminal, wherein the resource block is used for the terminal to send uplink data; calculating the transmitting power of the terminal according to the resource blocks; and the base station receives the uplink data transmitted by the terminal by using the transmission power.
Further, before the base station allocates the resource blocks to the terminal, the method further includes: allocating available resources for a base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station; the available resources are configured with an interference to noise ratio IoT.
Further, allocating available resources for the base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station comprises: dividing available resources into a first region and a second region at a division point T1 on a time domain, wherein the first region consists of a first resource block, a second resource block and a third resource block, the second region consists of N resource blocks, and N is a positive integer; the available resources of the base station are composed of a first resource block and N resource blocks; the available resources of the first adjacent base station are composed of a second resource block and N resource blocks; the available resources of the second adjacent base station are composed of a third resource block and N resource blocks.
Further, configuring the IoT for the available resource includes one of: configuring an IoT for the available resource according to a standard; configuring IoT for available resources by the base station, the first adjacent base station and the second adjacent base station; the upper network unit configures IoT for the available resources and sends the IoT to the base station, the first adjacent base station and the second adjacent base station.
Further, the transmission power is calculated according to the following formula (1):
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>f</mi> <mrow> <mo>(</mo> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSserver</mi> </mrow> </msub> <mo>,</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>real</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>
wherein, PMS，FnFor transmit power, Fn is the resource block, f () represents a function operation, PLMS，BSserverFor the downlink path loss or the uplink path loss between the terminal and the serving base station,is the sum of the downlink path loss or the sum of the uplink path loss between the terminal, the first neighboring base station and the second neighboring base station, IoTn，setIoT set for resource blocks, IoTn，realIs the actual IoT, P of the resource blockM ax，MSIs the maximum transmit power value of the terminal.
Further, when IoT is a specific value, the transmit power is calculated as following equation (2): pMS，Fn＝f(PLMS，BSserver，IoTn，real，PMax,MS) (2); wherein, PMS，FnFor transmit power, Fn is the resource block, PLMS，BSserverFor downlink path loss or uplink path loss, IoT, between a terminal and a serving base stationn，realIs the actual IoT, P of the resource blockMax，MSIs the maximum transmit power value of the terminal.
Further, after calculating the transmission power of the terminal according to the resource blocks, the method further includes: base station according to PMS，FnAnd IoTn，realDetermining the modulation coding mode of the terminal on the resource block, wherein PMS，FnFor transmit power, Fn is a resource block, IoTn，realIs the actual IoT of the resource block.
To achieve the above object, according to another aspect of the present invention, an apparatus for processing inter-cell uplink interference is provided.
The device for processing the uplink interference between the cells comprises the following components: the first allocation module is used for allocating resource blocks for the terminal, wherein the resource blocks are used for the terminal to send uplink data; the computing module is used for computing the transmitting power of the terminal according to the resource block; and the receiving module is used for receiving the uplink data sent by the terminal by using the transmitting power.
Further, the above apparatus further comprises: a second allocating module, configured to allocate available resources to the base station, a first neighboring base station neighboring to the base station, and a second neighboring base station neighboring to the base station; a configuration module for configuring an interference to noise ratio, IoT, for the available resources.
Further, the second allocating module comprises: the division submodule is used for dividing the available resources into a first area and a second area at a division point T1 on a time domain, wherein the first area consists of a first resource block, a second resource block and a third resource block, the second area consists of N resource blocks, and N is a positive integer; the available resources of the base station are composed of a first resource block and N resource blocks; the available resources of the first adjacent base station are composed of a second resource block and N resource blocks; the available resources of the second adjacent base station are composed of a third resource block and N resource blocks.
The invention solves the problem that the uplink interference among the cells can influence the base station to receive the uplink signal of the terminal by controlling the transmitting power of the terminal, thereby reducing the intensity of the uplink interference among the cells under the condition of ensuring the performance of the uplink of the base station.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of an interference formation principle of an inter-cell uplink in a wireless communication system according to the related art;
fig. 2 is a flowchart of a method for processing uplink interference between cells according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a network topology of a cluster in a mobile communication system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of resource partitioning and IoT strength allocation of a method for processing uplink interference between cells according to an embodiment of the present invention;
fig. 5 is a schematic diagram of intra-cluster base station resource allocation and IoT level allocation in a mobile communication system according to a first preferred embodiment of the present invention;
fig. 6 is a schematic diagram of intra-cluster base station resource allocation and IoT level allocation in the mobile communication system according to the second preferred embodiment of the present invention;
fig. 7 is a schematic diagram of intra-cluster base station resource allocation and IoT level allocation in a mobile communication system according to a third preferred embodiment of the present invention;
fig. 8 is a block diagram of a device for processing uplink interference between cells according to an embodiment of the present invention;
fig. 9 is a block diagram of a device for processing uplink interference between cells according to a preferred embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment of the invention provides a method for processing uplink interference between cells, which can be realized based on the following mobile communication system. The mobile communication system at least comprises an upper network unit, a base station and a terminal. A base station which communicates with a terminal is called a serving base station; the upper network unit is any network entity or functional module of the network entity capable of interacting with the base station.
Fig. 2 is a flowchart of a method for processing uplink interference between cells according to an embodiment of the present invention, as shown in fig. 2, including steps S202 to S206 as follows.
Step S202, the base station allocates resource blocks for the terminal, wherein the resource blocks are used for the terminal to send uplink data.
And step S204, calculating the transmitting power of the terminal according to the resource block.
Step S206, the base station receives the uplink data sent by the terminal by using the transmitting power.
In the related art, uplink interference between cells may affect uplink signals of a base station receiving terminal. In the embodiment of the invention, the transmission power of the terminal is controlled, so that the uplink interference strength among cells can be reduced under the condition of ensuring the uplink performance of the base station.
Preferably, before the base station allocates the resource blocks to the terminal, the method further includes: allocating available resources for a base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station; an Interference over thermal (IoT) is configured for the available resources.
Fig. 3 is a schematic diagram of a network topology of a cluster in a mobile communication system according to an embodiment of the present invention, and as shown in fig. 3, a base station in the mobile communication system may be divided into a plurality of clusters, wherein one cluster includes three adjacent base stations. The base station, the first neighboring base station and the second neighboring base station in the preferred embodiment are preferably three neighboring base stations belonging to one cluster.
Measuring the inter-cell uplink interference strength through an IoT, wherein the IoT can be calculated by IoTk ═ Nk + Ik)/Nk, and Nk is the uplink noise power received by the base station on a subcarrier k; ik is uplink interference power received by the base station on the subcarrier k; IoTk is the IoT of the base station on subcarrier k.
Preferably, allocating available resources for the base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station comprises: dividing the available resources into a first region (Zone1) and a second region (Zone2) at a division point T1 in the time domain, wherein the first region is composed of a first resource block (F1-1), a second resource block (F1-2) and a third resource block (F1-3), the second region is composed of N resource blocks (F2-1 to F2-N), and N is a positive integer; the available resources of the base station are composed of a first resource block and N resource blocks; the available resources of the first adjacent base station are composed of a second resource block and N resource blocks; the available resources of the second adjacent base station are composed of a third resource block and N resource blocks.
Fig. 4 is a schematic diagram of a resource partitioning manner and IoT strength allocation of a method for processing uplink interference between cells according to an embodiment of the present invention, and as shown in fig. 4, the partitioning of resource blocks is described.
Preferably, T1 is configured in a manner that includes one of: a standard default configuration; configured by an upper network unit and sent to a base station; configured by the base station.
Preferably, configuring the IoT for the available resource includes one of: configuring an IoT for the available resource according to a standard; configuring IoT for available resources by the base station, the first adjacent base station and the second adjacent base station; the upper network unit configures IoT for the available resources and sends the IoT to the base station, the first adjacent base station and the second adjacent base station.
Preferably, the base station allocating resource blocks for the terminal includes at least one of: the base station allocates resource blocks for the terminals with less available resource blocks, and then allocates resource blocks for the terminals with more available resource blocks; the base station firstly allocates the resource block of the first area for the terminal and then allocates the resource block of the second area for the terminal.
Preferably, before the base station allocates the resource blocks to the terminal with the small number of resource blocks and then allocates the resource blocks to the terminal with the large number of resource blocks, the method further includes: the base station counts the number of resource blocks and index information of the terminal; and the base station sequences the terminals according to the sequence of the number of the resource blocks from small to large.
Preferably, the transmit power is calculated according to the following equation (1):
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>f</mi> <mrow> <mo>(</mo> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSserver</mi> </mrow> </msub> <mo>,</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>real</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>
wherein, PMS，FnFor transmit power, Fn is the above resource block (i.e., any of F1-1, F1-2, F1-3, F2-1 to F2-N), and F () represents a function operation, PLMS，BSserverFor the downlink path loss or the uplink path loss between the terminal and the serving base station,is the sum of the downlink path loss or the sum of the uplink path loss between the terminal, the first neighboring base station and the second neighboring base station, IoTn，setIoT set for resource blocks, IoTn，realIs the actual IoT, P of the resource blockM ax，MSIs the maximum transmit power value of the terminal.
Preferably, when IoT is a specific value, the transmit power is calculated as follows (2):
PMS，Fn＝f(PLMS，BSserver，IoTn，real，PM ax，MS) (2)；
wherein, PMS，FnFn is the above resource block (i.e., any of F1-1, F1-2, F1-3, F2-1 to F2-N), PL, for transmitting powerMS，BSserverFor downlink path loss or uplink path loss, IoT, between a terminal and a serving base stationn，realIs the actual IoT, P of the resource blockMax，MSIs the maximum transmit power value of the terminal.
It should be noted that, when the value of the IoT strength is a specific value, the terminal transmission power is determined without considering the IoT strength of the corresponding resource block, and the specific value is configured by a manner including one of the following: a standard default configuration; configured by an upper network unit and sent to a base station; configured by the base station.
In addition, the step of calculating the transmission power according to equation 2 may be performed by the base station or the terminal.
Preferably, after calculating the transmission power of the terminal according to the resource blocks, the method further includes: base station according to PMS，FnAnd IoTn，realDetermining the modulation coding mode of the terminal on the resource block, wherein PMS，FnFor transmit power, Fn is a resource block, IoTn，realIs the actual IoT of the resource block.
The following describes in detail the implementation of the embodiments of the present invention with reference to examples.
Preferred embodiment 1
One mobile communication system includes a plurality of clusters, each cluster includes K base stations, where K is 3 in this embodiment, and as shown in fig. 3, one cluster includes 3 base stations, base station 1 (sector 1, BS1), base station 2 (sector 2, BS2), and base station 3 (sector 3, BS 3).
The following describes the implementation steps of the inter-cell uplink interference coordination algorithm proposed in the present invention.
(1) BS1, BS2, and BS3 are allocated available resources and configured with different IoT levels as shown in fig. 5.
Dividing available resources into two regions (zones) from a time domain, wherein the Zone1 comprises resource blocks F1-1, F1-2 and F1-3; zone2 includes resource 4 resource blocks F2-1 through F2-4.
Wherein, T1 is a division point of Zone1 and Zone2 in the time domain, a value of T1 may be a time occupied by one or more time domain symbols, and a value of T1 is configured by BS1, BS2, and BS3 in a unified manner.
The value of T1 is not limited to the method in this embodiment, and may be sent to BS1, BS2, and BS3 by a standard default configuration or after being configured by an upper network.
For BS1, the IoT strength of F1-1 is 0dB, and F1-2 and F1-3 resources BS1 are not used; the IoT strengths of resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, and 12dB, respectively.
For BS2, the IoT strength of F1-2 is 0dB, and F1-1 and F1-3 resources BS2 are not used; the IoT strengths of resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, and 12dB, respectively.
For BS3, the IoT strength of F1-3 is 0dB, and F1-1 and F1-2 resources BS3 are not used; the IoT strengths of resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, and 12dB, respectively.
In this embodiment, each resource block IoT strength value is configured by the base station in a unified manner, and when the IoT strength value is 0dB, the terminal transmission power is determined without considering the IoT strength of the corresponding resource block.
(2) And the base station sends the IoT strength value configured by each resource block to the terminal.
(3) The transmit power of the terminal is determined according to equation 4.
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>max</mi> <mrow> <mo>(</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>+</mo> <mi>N</mi> <mo>+</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math> IoTn，set≠0(4)
PMS，Fn＝max(PLMS，BSserver+N+IoTn，real，PMax，MS)；IoTn，set＝0
Wherein,
PMS，Fnrepresenting the transmit power of the terminal MS on resource block Fn, which may be F1-1, F1-2, F1-3, F2-1 through F2-4.
Max denotes an operation of taking the maximum value.
PLMS，BSserverIndicating the downlink path loss or the uplink path loss between the MS and the serving base station.
Indicating the downlink path loss between the MS and the 2 neighboring base stationsAnd or the sum of the uplink path losses.
IoTn，setRepresenting the set IoT strength on resource block Fn.
IoTn，realRepresenting the actual experienced IoT strength on resource block Fn.
PMax，MSRepresenting the maximum transmit power value of the MS.
N denotes the uplink noise power.
(4) Base station according to PMS，FnAnd IoTn，realAnd determining whether the terminal MS can send data on the resource block Fn, and determining a modulation coding mode MCSn of the terminal on the resource block Fn which can send the data.
Taking BS1 as an example, terminal MS1 and terminal MS2 select BS1 as the serving base station, respectively.
Assuming that MS1 can only transmit data on F1-1, MS2 can transmit data on F1-1, F2-1, F2-2, F2-3, and F2-4.
(5) The base station determines that the MS1 can only transmit data on 1 resource block, and the MS2 can transmit data on 5 resource blocks, the base station first allocates resources of F1-1 for the MS1, and then allocates resources for the MS 2.
When allocating resources for MS2, resources for F1-1 are allocated first, and if no resources remain on F1-1, resources for F2-1, F2-2, F2-3 and F2-4 are allocated for MS 2.
(6) The base station transmits resource block information allocated for the terminal to the terminals MS1 and MS 2.
(7) The terminal receives the allocated resource block information transmitted by the base station, determines the transmission power according to formula 4, and completes the transmission of data.
Preferred embodiment two
One mobile communication system includes a plurality of clusters, each cluster includes K base stations, where K is 3 in this embodiment, and as shown in fig. 3, one cluster includes 3 base stations, base station 1 (sector 1, BS1), base station 2 (sector 2, BS2), and base station 3 (sector 3, BS 3).
The following describes the implementation steps of the inter-cell uplink interference coordination algorithm proposed in the present invention.
(1) BS1, BS2, and BS3 are allocated available resources and configured with different IoT levels as shown in fig. 6.
Dividing available resources into two regions (zones) from a time domain, wherein the Zone1 comprises resource blocks F1-1, F1-2 and F1-3; zone2 includes resource 4 resource blocks F2-1 through F2-4.
Wherein, T1 is a division point of Zone1 and Zone2 in the time domain, a value of T1 may be a time occupied by one or more time domain symbols, and a value of T1 is configured by BS1, BS2, and BS3 in a unified manner.
The value of T1 is not limited to the method in this embodiment, and may be sent to BS1, BS2, and BS3 by a standard default configuration or after being configured by an upper network.
Assuming that T1 is equal to 0 in this embodiment, there is no Zone1, and thus the resource configurations and IoT levels of BS1, BS2, and BS3 are as shown in fig. 6.
For BS1, the IoT strengths for resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, 12dB, respectively.
For BS2, the IoT strengths for resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, 12dB, respectively.
For BS3, the IoT strengths for resource blocks F2-1 through F2-4 are 3dB, 6dB, 9dB, 12dB, respectively.
(2) And the base station sends the IoT strength value configured by each resource block to the terminal.
(3) The transmit power of the terminal is determined according to equation 5.
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>max</mi> <mrow> <mo>(</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>+</mo> <mi>N</mi> <mo>+</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math> IoTn，set≠0(5)
PMS，Fn＝max(PLMS，BSserver+N+IoTn，real，PM ax，MS)；IoTn，set＝0
Wherein,
PMS，Fnrepresenting the transmit power of the terminal MS on resource block Fn, which may be F1-1, F1-2, F1-3, F2-1 through F2-4.
Max denotes an operation of taking the maximum value.
PLMS，BSserverIndicating the downlink path loss or the uplink path loss between the MS and the serving base station.
Indicating the sum of downlink path losses or the sum of uplink path losses between the MS and the neighboring 2 base stations.
IoTn，setRepresenting the set IoT strength on resource block Fn.
IoTn，realRepresenting the actual experienced IoT strength on resource block Fn.
PM ax，MSRepresenting the maximum transmit power value of the MS.
N denotes the uplink noise power.
(4) Base station according to PMS，FnAnd IoTn，realAnd determining whether the terminal MS can send data on the resource block Fn, and determining a modulation coding mode MCSn of the terminal on the resource block Fn which can send the data.
Taking BS1 as an example, terminal MS1 and terminal MS2 select BS1 as the serving base station, respectively.
Assuming that MS1 may transmit data on F2-4, MS2 may transmit data on F2-1, F2-2, F2-3, and F2-4.
(5) The base station determines that the MS1 can only transmit data on 1 resource block, and the MS2 can transmit data on 4 resource blocks, the base station first allocates resources of F2-4 for the MS1, and then allocates resources for the MS 2.
When resources are allocated for the MS2, the resources are allocated according to the modulation and coding efficiency of the modulation and coding mode determined by the MS2 on the resources of F2-1, F2-2, F2-3 and F2-4 from high to low.
(6) The base station sends the resource block information distributed for the terminal to the terminals MS1 and MS 2;
(7) the terminal receives the allocated resource block information transmitted by the base station, determines the transmission power according to formula 4, and completes the transmission of data.
Preferred embodiment three
One mobile communication system includes a plurality of clusters, each cluster includes K base stations, where K is 3 in this embodiment, and as shown in fig. 3, one cluster includes 3 base stations, base station 1 (sector 1, BS1), base station 2 (sector 2, BS2), and base station 3 (sector 3, BS 3).
The following describes the implementation steps of the inter-cell uplink interference coordination algorithm proposed in the present invention.
(1) As shown in fig. 7, BS1, BS2, and BS3 allocate available resources and configure different IoT levels, and in this embodiment, it is assumed that T1 is 0.
For the BS1, the IoT strengths of resource blocks F2-1 through F2-4 are 0dB, 6dB, 9dB, and 12dB, respectively.
For BS2, the IoT strengths of resource blocks F2-1 through F2-4 are 3dB, 0dB, 9dB, and 12dB, respectively.
For the BS3, the IoT strengths of resource blocks F2-1 through F2-4 are 3dB, 6dB, 0dB, and 12dB, respectively.
When the value of the IoT strength is 0dB, the terminal transmission power is determined without considering the IoT strength of the corresponding resource block, and the neighboring base station does not allocate resources to the user on the corresponding resource block.
Then the actual available resource blocks are F2-1 and F2-4 for BS1, with IoT strengths of 0dB, and 12dB, respectively.
Then the actual available resource blocks are F2-2 and F2-4 for BS2, with IoT strengths of 0dB, and 12dB, respectively.
Then the actual available resource blocks are F2-3 and F2-4 for BS3, with IoT strengths of 0dB, and 12dB, respectively.
(2) And the base station sends the IoT strength value configured by each resource block to the terminal.
(3) The transmit power of the terminal is determined according to equation 6.
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>max</mi> <mrow> <mo>(</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>+</mo> <mi>N</mi> <mo>+</mo> <msub> <mi>IoT</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math> IoTn，set≠0(6)
PMS，Fn＝max(PLMS，BSserver+N+IoTn，real，PMax，MS)；IoTn，set＝0
Wherein, PMS，FnRepresenting the transmit power of the terminal MS on resource block Fn, which may be F1-1, F1-2, F1-3, F2-1 through F2-4.
Max denotes an operation of taking the maximum value.
PLMS，BSserverIndicating the downlink path loss or the uplink path loss between the MS and the serving base station.
Indicating the sum of downlink path losses or the sum of uplink path losses between the MS and the neighboring 2 base stations.
IoTn，setRepresenting the set IoT strength on resource block Fn.
IoTn，realRepresenting the actual experienced IoT strength on resource block Fn.
PMax，MSRepresenting the maximum transmit power value of the MS.
N denotes the uplink noise power.
(4) Base station according to PMS，FnAnd IoTn，realAnd determining whether the terminal MS can send data on the resource block Fn, and determining a modulation coding mode MCSn of the terminal on the resource block Fn which can send the data.
Taking BS1 as an example, terminal MS1 and terminal MS2 select BS1 as the serving base station, respectively.
Assuming that MS1 may transmit data on F2-4, MS2 may transmit data on F2-1, F2-2, F2-3, and F2-4.
(5) The base station determines that the MS1 can only transmit data on 1 resource block, and the MS2 can transmit data on 4 resource blocks, the base station first allocates resources of F2-4 for the MS1, and then allocates resources for the MS 2.
When resources are allocated for the MS2, the resources are allocated according to the modulation and coding efficiency of the modulation and coding mode determined by the MS2 on the resources of F2-1, F2-2, F2-3 and F2-4 from high to low.
(6) The base station transmits resource block information allocated for the terminal to the terminals MS1 and MS 2.
(7) The terminal receives the allocated resource block information transmitted by the base station, determines the transmission power according to formula 4, and completes the transmission of data.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the invention provides a device for processing inter-cell uplink interference, which can be used for realizing the method for processing the inter-cell uplink interference. Fig. 8 is a block diagram of a device for processing uplink interference between cells according to an embodiment of the present invention, and as shown in fig. 8, the device includes an allocating module 81, a calculating module 82, and a receiving module 83. The structure thereof is described in detail below.
A first allocation module 81, configured to allocate a resource block to the terminal, where the resource block is used for the terminal to send uplink data; a calculating module 82, connected to the first allocating module 81, for calculating the transmission power of the terminal according to the resource blocks allocated by the first allocating module 81; and a receiving module 83, connected to the calculating module 82, configured to receive uplink data sent by the terminal using the transmission power calculated by the calculating module 82.
Fig. 9 is a block diagram of a device for processing uplink interference between cells according to a preferred embodiment of the present invention.
Preferably, the apparatus further comprises a second distribution module 84 and a configuration module 85, which are described in detail below.
An allocation module 84 for allocating available resources for a base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station; a configuration module 85 connected to the allocation module 84, configured to configure IoT for the available resources allocated by the allocation module 84.
In addition, the first allocating module 81 is connected to the second allocating module 84, and configured to allocate resource blocks to the terminal using the available resources allocated by the second allocating module 84, where the resource blocks are used for the terminal to transmit uplink data.
Preferably, the second allocating module comprises: the division submodule is used for dividing the available resources into a first area and a second area at a division point T1 on a time domain, wherein the first area consists of a first resource block, a second resource block and a third resource block, the second area consists of N resource blocks, and N is a positive integer; the available resources of the base station are composed of a first resource block and N resource blocks; the available resources of the first adjacent base station are composed of a second resource block and N resource blocks; the available resources of the second adjacent base station are composed of a third resource block and N resource blocks.
It should be noted that the processing apparatus for inter-cell uplink interference described in the apparatus embodiment corresponds to the above-mentioned method embodiment, and a specific implementation process thereof has been described in detail in the method embodiment, and is not described herein again.
In summary, the embodiments of the present invention provide a method and an apparatus for processing uplink interference between cells. By controlling the transmitting power of the terminal, the problem that the uplink interference among the cells can influence the base station to receive the uplink signal of the terminal is solved, so that the intensity of the uplink interference among the cells can be reduced under the condition of ensuring the uplink performance of the base station.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and they may alternatively be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from multiple modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A method for processing uplink interference between cells is characterized by comprising the following steps:
a base station allocates a resource block for a terminal, wherein the resource block is used for the terminal to send uplink data;
calculating the transmitting power of the terminal according to the resource block;
the base station receives uplink data sent by the terminal by using the transmission power, wherein before the base station allocates the resource block to the terminal, the method further comprises: allocating available resources for the base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station; configuring an interference to noise ratio (IoT) for the available resources, and calculating the transmission power according to the following formula (1):
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>f</mi> <mrow> <mo>(</mo> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSserver</mi> </mrow> </msub> <mo>,</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>,</mo> <mi>Io</mi> <msub> <mi>T</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <mi>Io</mi> <msub> <mi>T</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>real</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>
wherein, PMS,FnFor the transmit power, Fn is the resource block, f () represents a function operation, PLMS,BSserverFor the downlink path loss or the uplink path loss between the terminal and the serving base station,is the endSum of downlink path losses or sum of uplink path losses, IoT, between a terminal, the first neighboring base station and the second neighboring base stationn,setIoT set for the resource block, IoTn,realIs the actual IoT, P of the resource blockMax,MSIs the maximum transmission power value of the terminal.
2. The method of claim 1, wherein allocating available resources for the base station, a first neighboring base station neighboring the base station, and a second neighboring base station neighboring the base station comprises:
dividing the available resources into a first region and a second region at a division point T1 on a time domain, wherein the first region consists of a first resource block, a second resource block and a third resource block, the second region consists of N resource blocks, and N is a positive integer;
the available resources of the base station are composed of the first resource block and the N resource blocks;
the available resources of the first adjacent base station are composed of the second resource block and the N resource blocks;
the available resources of the second neighboring base station are composed of the third resource block and the N resource blocks.
3. The method of claim 1, wherein configuring the available resources with the IoT comprises one of:
configuring an IoT for the available resources according to a standard;
the base station, the first neighboring base station, and the second neighboring base station configure an IoT for the available resources;
and configuring an IoT for the available resources by an upper network unit, and sending the IoT to the base station, the first adjacent base station and the second adjacent base station.
4. The method of claim 1, wherein when IoT is a specific value, the transmit power is calculated according to the following equation (2):
PMS,Fn＝f(PLMS,BSserver,IoTn,real,PMax,MS) (2)；
wherein, PMS,FnFor the transmit power, Fn is the resource block,
PLMS,BSserverfor the downlink path loss or the uplink path loss between the terminal and the serving base station,
IoTn,realfor the actual IoT of the resource block in question,
PMax,MSis the maximum transmission power value of the terminal.
5. The method of claim 1, wherein after calculating the transmit power of the terminal according to the resource blocks, the method further comprises:
the base station is according to PMS,FnAnd IoTn,realDetermining the modulation coding mode of the terminal on the resource block, wherein PMS,FnFor the transmit power, Fn is the resource block, IoTn,realIs the actual IoT for the resource block.
6. An apparatus for processing uplink interference between cells, comprising:
a first allocation module, configured to allocate a resource block to a terminal, where the resource block is used for the terminal to send uplink data;
a calculating module, configured to calculate a transmit power of the terminal according to the resource block, where the apparatus further includes: a second allocating module, configured to allocate available resources to a base station, a first neighboring base station neighboring to the base station, and a second neighboring base station neighboring to the base station; a configuration module, configured to configure an interference to noise ratio (IoT) for the available resource, and calculate the transmission power according to the following equation (1):
<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>Fn</mi> </mrow> </msub> <mo>=</mo> <mi>f</mi> <mrow> <mo>(</mo> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSserver</mi> </mrow> </msub> <mo>,</mo> <munderover> <mi>&Sigma;</mi> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mn>2</mn> </munderover> <msub> <mi>PL</mi> <mrow> <mi>MS</mi> <mo>,</mo> <mi>BSi</mi> </mrow> </msub> <mo>,</mo> <mi>Io</mi> <msub> <mi>T</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>set</mi> </mrow> </msub> <mo>,</mo> <mi>Io</mi> <msub> <mi>T</mi> <mrow> <mi>n</mi> <mo>,</mo> <mi>real</mi> </mrow> </msub> <mo>,</mo> <msub> <mi>P</mi> <mrow> <mi>Max</mi> <mo>,</mo> <mi>MS</mi> </mrow> </msub> <mo>)</mo> </mrow> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>;</mo> </mrow> </math>
wherein, PMS,FnFor the transmit power, Fn is the resource block, f () represents a function operation, PLMS,BSserverFor the downlink path loss or the uplink path loss between the terminal and the serving base station,is the sum of the downlink path loss or the sum of the uplink path loss among the terminal, the first neighboring base station and the second neighboring base station, IoTn,setIoT set for the resource block, IoTn,realIs the actual IoT, P of the resource blockMax,MSThe maximum transmission power value of the terminal;
and the receiving module is used for receiving the uplink data sent by the terminal by using the transmitting power.
7. The apparatus of claim 6, wherein the second allocation module comprises:
a dividing submodule, configured to divide the available resource into a first region and a second region at a division point T1 in a time domain, where the first region is composed of a first resource block, a second resource block, and a third resource block, the second region is composed of N resource blocks, and N is a positive integer;
the available resources of the base station are composed of the first resource block and the N resource blocks;
the available resources of the first adjacent base station are composed of the second resource block and the N resource blocks;
the available resources of the second neighboring base station are composed of the third resource block and the N resource blocks.
CN201010584229.6A 2010-12-10 2010-12-10 The processing method of inter-cell uplink interference and device Expired - Fee Related CN102045826B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201010584229.6A CN102045826B (en) 2010-12-10 2010-12-10 The processing method of inter-cell uplink interference and device
PCT/CN2011/075285 WO2012075788A1 (en) 2010-12-10 2011-06-03 Method and apparatus for processing uplink inter-cell interference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010584229.6A CN102045826B (en) 2010-12-10 2010-12-10 The processing method of inter-cell uplink interference and device

Publications (2)

Publication Number Publication Date
CN102045826A CN102045826A (en) 2011-05-04
CN102045826B true CN102045826B (en) 2015-08-12

Family

ID=43911453

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010584229.6A Expired - Fee Related CN102045826B (en) 2010-12-10 2010-12-10 The processing method of inter-cell uplink interference and device

Country Status (2)

Country Link
CN (1) CN102045826B (en)
WO (1) WO2012075788A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045826B (en) * 2010-12-10 2015-08-12 中兴通讯股份有限公司 The processing method of inter-cell uplink interference and device
CN103096451B (en) * 2011-11-07 2016-08-03 华为技术有限公司 The method of a kind of resource distribution and base station
CN106455090B (en) * 2015-08-12 2020-02-11 成都鼎桥通信技术有限公司 Uplink signal transmission method of LTE cluster terminal
CN108024363B (en) * 2016-11-04 2023-05-23 中兴通讯股份有限公司 Interference processing method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494476A (en) * 2008-01-24 2009-07-29 中兴通讯股份有限公司 Method and system for scheduling resource block
CN101741437A (en) * 2008-11-19 2010-06-16 中国移动通信集团公司 Uplink power control method, system and equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8325621B2 (en) * 2007-04-20 2012-12-04 Telefonaktiebolaget Lm Ericsson (Publ) Inter-cell interference co-ordination
CN102045826B (en) * 2010-12-10 2015-08-12 中兴通讯股份有限公司 The processing method of inter-cell uplink interference and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494476A (en) * 2008-01-24 2009-07-29 中兴通讯股份有限公司 Method and system for scheduling resource block
CN101741437A (en) * 2008-11-19 2010-06-16 中国移动通信集团公司 Uplink power control method, system and equipment

Also Published As

Publication number Publication date
CN102045826A (en) 2011-05-04
WO2012075788A1 (en) 2012-06-14

Similar Documents

Publication Publication Date Title
CN102804656B (en) OFDMA cellular network and method for mitigating interference
US20170347268A1 (en) Resource Allocation Design for Low Cost Machine-Type Communication UE
JP4412505B2 (en) Wireless communication system
CN102017682B (en) Downlink inter-cell interference coordination method and base station
US20060126546A1 (en) Enhanced hybrid duplexing technology-based wireless communication system
JP2006141038A (en) Handover method and system in broadband wireless access communication system
JP2004159345A (en) Ofdm frequency reuse method in mobile communication system
KR20080090038A (en) Apparatus and method for allocating resource in a communication system
CN110278563A (en) Determine the method and device of frequency spectrum resource
CN101674680A (en) Method and device for allocating bands and base station
WO2012079344A1 (en) Method and base station for scheduling and allocating resources in orthogonal frequency division multiplexing system
WO2008007775A1 (en) Cellular system, its carrier allocation method, base station, and mobile station
CN102045826B (en) The processing method of inter-cell uplink interference and device
KR101651407B1 (en) Method and apparatus for reuse of adaptive partial frequency in a cellular mobile communication system
CN109392117B (en) Scheduling request configuration method in orthogonal frequency division multiplexing system
CN114867120A (en) Resource allocation method, device, equipment and storage medium
CN102215594B (en) Dispatching method and device
CN101729130A (en) Method and device for transmitting downlink interference coordination parameters
KR102027413B1 (en) Method and apparatus for resource allocation
CN101932099B (en) Method and device for allocating rise over thermal (ROT) in the process of supporting space division multiple access (SDMA)
CN102572961B (en) The method of micro cell deployment WAP (wireless access point) channel and device
US8306006B2 (en) Resource allocation / management method and device based on block repeat division multiple access
Alquhali et al. Enhanced fractional frequency reuse approach for interference mitigation in femtocell networks
CN102075479B (en) Method and system for realizing space division multiplexing of multi-carrier-wave high speed downlink packet access
CN102378277B (en) Method for coordinating high power frequency band in long term evolved system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150812

Termination date: 20191210