CN102474868A - Method and equipment for estimating downlink channel condition - Google Patents
Method and equipment for estimating downlink channel condition Download PDFInfo
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- CN102474868A CN102474868A CN2009801598753A CN200980159875A CN102474868A CN 102474868 A CN102474868 A CN 102474868A CN 2009801598753 A CN2009801598753 A CN 2009801598753A CN 200980159875 A CN200980159875 A CN 200980159875A CN 102474868 A CN102474868 A CN 102474868A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
The present invention provides a technical solution in which a network equipment estimates the downlink channel condition of a user terminal on a resource block in a relay network. The user terminal transmits data of service node received power, node identification data and data of node reference signal received power. After receiving the above data transmitted by the user terminal, the network equipment obtains the transmission status information of at least one node on the resource block, then estimates the downlink channel condition of the user terminal on the resource block according to the data of service node received power, the node identification data, the data of node reference signal received power and the transmission status information. By this means, even if the transmission status of a node on different resource blocks is different, the estimation for the downlink channel condition on different resource blocks can be comparatively accurate.
Description
For the method and apparatus for the channel condition for estimating downlink
Technical field
The present invention relates to the method and apparatus of the channel condition for estimating downlink, more particularly to for the method and apparatus for the channel condition for estimating downlink in junction network.Background technology
In a cellular communication system, the channel quality between cell of the quality of the signal received by user depending on user and belonging to it, comes from the interference level and noise level of other cells.In order to optimize power system capacity and the covering under given power, the emitter of base station needs the change of the signal quality received according to each user to do corresponding rate-matched, i.e., usually said link circuit self-adapting.
In existing cellular communication system, the main process of link circuit self-adapting is as follows.First, user terminal can measure the channel condition of its downlink, for example, receive the Signal to Interference plus Noise Ratio of signal
(SINR, Signal to Interference plus Noise Ratio) or signal interference ratio（ SIR, Signal to Interference Ratio ).Then, user terminal by the channel condition feedback of the downlink measured to base station.Understand the modulation system and code rate that select it with the downlink of user terminal communication according to channel condition after the channel condition transmitted by user terminal is received in base station.
In 3GPP (Third Generation Partnership Project) long evolving system (LTE, Long Term Evolution system) in, channel quality indicates (CQI, Channel Quality Indication) identify channel condition, and the data rate for indicating to support.User terminal is after the Signal to Interference plus Noise Ratio that m-th of subframe measures its signal received, it is considered to the receiver identity of its own, and the channel condition detected feeds back to base station eNodeB (evolved NodeB) in the form of CQI.Base station eNodeB by the CQI feedback of received user terminal as reference, it is determined that the modulation system and code rate of the downlink corresponding to the user terminal in the m+k subframe.
The content of the invention
In 3GPP LTE systems, when changes in channel conditions is not quickly, base station eNodeB just can using user terminal the downlink measured by the m subframe channel condition as reference, to determine to correspond to modulation system and code rate of the user terminal in the downlink of the m+k subframe.
However, the chain circuit self-adaptive method that can be worked in a cellular communication system can not obtain same effect in the cellular communication system for be introduced into repeater mode.In the cellular communication system of repeater mode is introduced into, there is the via node of a base station eNodeB and multiple subordinates of the base station eNodeB in a cell.When they use orthogonal sending method, in a subframe, only one of which node（Base station eNodeB or via node）Data are sent, this, which is resulted in, might have different nodes in progress data transmission in different subframes.
In the cellular communication system of repeater mode is introduced into, base station eNodeB and via node can produce interference to the reception signal of user terminal.Due to the location of different nodes difference, different nodes are also different to the interference produced by a user terminal.For a user terminal, system in node of the m+k subframe in transmission state may be entirely different with system in the node that m-th subframe is in transmission state.Therefore, user terminal in the interference level suffered by the m+k subframe may have larger gap in the interference level suffered by m-th of subframe with the user terminal.In this case, if still to be used as the reference in the sending method of the m+k subframe in the CQI information measured by m-th of subframe, selected modulation system and coded system can not match with the channel condition of the m+k subframe, therefore it can not only optimize the performance of system, the performance of system can be reduced on the contrary.
In summary, if can be in the cellular network for being introduced into relaying to some following resource block (such as subframe）On channel condition do relatively accurate estimation and will be highly profitable.In order to solve it is above-mentioned consider, there is provided a kind of method that downlink channel conditions of the user terminal on a resource block are estimated in a network equipment of junction network for one embodiment according to the first aspect of the invention.The method comprising the steps of：
- a service node receiving power data are received, it is used to indicate the user terminal
The relevant information of the power for the reference signal that a service node belonging to the user terminal received is launched；
- a node identification data are received, it is used for the mark for indicating at least one node related to the user terminal；
- a node Reference Signal Received Power data are received, it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched；
- obtain the transmission condition information of at least one node on the resource block；And
- according to the service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information, estimate the channel condition of downlink of the user terminal on the resource block.
Because the network equipment can either obtain the transmission situation of each node on some resource block, the node related to a user terminal can be understood again（The node of interference is for example produced to user terminal）Power information, as long as the position of user terminal does not occur than larger change, the network equipment can just estimate the channel condition of downlink of the user terminal on a resource block.Even if the position of user terminal is changed, can also periodically or the acyclic power information for updating the node related to user terminal, so that the network equipment still can accurately estimate the channel condition of downlink of the user terminal on a resource block.Therefore, even if transmission state of the node on different resource blocks is different, the channel condition of the downlink on different resource block still can more accurately be estimated.One embodiment according to a second aspect of the present invention is there is provided a kind of method that feedback information is provided in a user terminal in junction network, and the method comprising the steps of：
- a service node receiving power data are sent, it is used to indicating the relevant information of the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched；
The power of-the reference signal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node；
- a node identification data are sent, it is used for the mark for indicating at least one node；And
- a node Reference Signal Received Power data are sent, it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched.
User terminal is by sending relative node（The node of interference is for example produced to it）Mark and power information, can complete the estimation of the channel condition to its downlink on some resource block with assisted network equipment.In this way, even if transmission state of the node on different resource blocks is different, the channel condition of the downlink on different resource block still can more accurately be estimated.There is provided a kind of method that network equipment in junction network estimates downlink channel conditions of the user terminal on a resource block for one embodiment according to the third aspect of the present invention.The method comprising the steps of：
- the user terminal sends a service node receiving power data, and it is used to indicating the relevant information of the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched；
The power of the reference signal of-user terminal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node；
The one node identification data of-user terminal transmission, it is used for the mark for indicating at least one node；
The one node Reference Signal Received Power data of-user terminal transmission, it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched；
- the network equipment reception service node receiving power data；
- the network equipment reception node identification data；
- the network equipment reception node Reference Signal Received Power data；
- the network equipment obtains the transmission condition information of at least one node on the resource block；And
- the network equipment estimates the channel condition of downlink of the user terminal on the resource block according to the service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information.There is provided a kind of network equipment for being used to estimate downlink channel conditions of the user terminal on a resource block in junction network for one embodiment according to the fourth aspect of the invention.The network equipment includes：
One receiver, it is used to receive a service node receiving power data, and the service node receiving power data are used for the relevant information for indicating the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched
The receiver is additionally operable to receive a node identification data, and the node identification data are used for the mark for indicating at least one node related to the user terminal,
The receiver is additionally operable to receive a node Reference Signal Received Power data, and the node Reference Signal Received Power data are used for the relevant information for indicating the power for the reference signal that at least one described node that the user terminal is received is launched；
One first device, it is used to obtain the transmission condition information of at least one node on the resource block；And
One second device, it is used for the channel condition that downlink of the user terminal on the resource block is estimated according to the service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information.There is provided an a kind of user terminal for being used to provide feedback information in junction network for one embodiment according to the fifth aspect of the invention.The user terminal includes：
One first device, it is used for the power of the reference signal according to transmitted by received multiple nodes, and it is the node related to the user terminal to determine at least one node；And
One transmitter, it is used to send a node identification data, and the node identification data are used for the mark for indicating at least one node；
The transmitter is additionally operable to send a node Reference Signal Received Power data, and the node Reference Signal Received Power data are used to indicate the user terminal is received described at least one
The relevant information of the power for the reference signal that individual node is launched；
The transmitter is additionally operable to send a service node receiving power data, and the service node receiving power data are used for the relevant information for indicating the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the above of the invention and other features, objects and advantages will become more apparent：
Fig. 1 is the method flow diagram according to an embodiment of the invention that downlink channel conditions of the user terminal on a resource block are estimated in a network equipment of junction network；Fig. 2 is the method flow diagram of offer feedback information in a user terminal according to an embodiment of the invention in junction network；
Fig. 3 is the method flow diagram that a network equipment according to an embodiment of the invention in junction network estimates downlink channel conditions of the user terminal on a resource block；Fig. 4 is the method flow diagram of downlink channel conditions of the network equipment one user terminal of estimation on a resource block in junction network according to another embodiment of the invention；
Fig. 5 is the schematic block diagram of the network equipment according to an embodiment of the invention；And Fig. 6 is the schematic block diagram of user terminal according to an embodiment of the invention.
Same or similar accompanying drawing mark represents same or similar part in accompanying drawing.Embodiment
Fig. 1 is the method flow diagram according to an embodiment of the invention that downlink channel conditions of the user terminal on a resource block are estimated in a network equipment of junction network.
According to the first aspect of the invention, it provide firstly a kind of method that downlink channel conditions of the user terminal on a resource block are estimated in a network equipment of junction network.
Junction network can be self-organizing network or multihop network, or introduce the cellular communications networks of relaying.The network equipment can be base station（Such as base station eNodeB) or relay station.User terminal can be a mobile device or a fixing equipment.Resource block can be determined by frequency, code word or time etc..Downlink refers to that user terminal receives the link of the transmission signal of base station or relay station.
As shown in figure 1, first in step 1 10, the network equipment receives a service node receiving power data, and it is used for the relevant information of the power for the reference signal that a service node belonging to the user terminal that indicating user terminal is received is launched.
Service node belonging to user terminal is the node that data transmit-receive is directly carried out between user terminal.Service node can be for the node nearest apart from user terminal or between user terminal the minimum node of transmission loss etc..
The relevant information of the power for the reference signal that the service node that user terminal is received is launched can be indicated in several ways.For example, pre-defining the power grade shown in a form, form corresponding to different capacity, such as power of 100 Bos watt to 150 Bos watt corresponds to power grade 3.The network equipment passes through the power grade information of the service node received, it is possible to know the power bracket corresponding to the power grade information, and a value is then taken in the power bracket（Such as median, maximum or minimum value）It is used as the receiving power corresponding to service node.And for example, performance number is converted into decibel, then distributing several bits is used to represent performance number, such as 10 bits can just represent 1024 performance numbers.
When the service node belonging to user terminal change or user terminal received by the power of reference signal of service node change when, the network equipment can receive the relevant information of the power of the reference signal of new service node.
Secondly, in the step 120, the network equipment receives a node identification data, and it is used for the mark for indicating at least one node related to user terminal.
The mark that the network equipment directly can receive at least one node from user terminal can also receive the mark of at least one node by another network equipment.Node can be base station or relay station.
At least one node related to user terminal can be determined in several ways.For example, at least one node can be determined by user terminal, such as, user terminal can be with by it
Receive all nodes in the node of reference signal in addition to service node and be defined as at least one relative node.And for example, at least one node can also be determined by the network equipment, such as, the position of node location and user terminal of the network equipment in communication network, the closer node of chosen distance user terminal is used as at least one node related to user in the node in addition to service node.
Again, in step 130, the network equipment receives a node Reference Signal Received Power data, and it is used for the relevant information of the power for the reference signal that at least one node that indicating user terminal receives is launched.
Channel measurement for downlink and estimation that the reference signal launched of one node is launched for the node, and cell searching signal.For example, the cell own reference signal in LTE system（RS, Reference Signal ) .
The relevant information of the power for the reference signal that at least one node that user terminal is received is launched can be indicated in several ways.Concrete mode can be identical with the mode of the relevant information of the power for the reference signal that the service node that above-mentioned indicating user terminal is received is launched, and will not be repeated here.
Step 120 and step 130 can be performed simultaneously, can also be performed separately.For example, the network equipment receive simultaneously behind node identification data and node Reference Signal Received Power data, a node identification be exactly node corresponding to the node identification receiving power relevant information.
And for example, network equipment elder generation receiving node mark data, including three node identifications, then receives node Reference Signal Received Power data, including the receiving power relevant information of three nodes, and it is identical with putting in order for three node identifications to put in order.In this case, when the network equipment does not receive new node identification data, the node identification data that received node Reference Signal Received Power data are all with network equipment last time is received are corresponding.
Step 110, step 120 and step 130 can be performed simultaneously, can also be performed separately.For example, the receiving power relevant information of the reference signal of service node is placed on the front or behind of the receiving power relevant information of the reference signal of the node related to user terminal.
Then, in step 140, the network equipment obtains transmission condition information of at least one node on the resource block.
The transmission condition information of node can be showed in several ways.If for example, transmission situation of the node on a resource block is sends, transmission situation of the node on the resource block is denoted as 1;If transmission situation of the node on a resource block is does not send, transmission situation of the node on the resource block is denoted as 0.
The network equipment can obtain transmission condition information of at least one node on a resource block in several ways.For example, transmission condition information of the multiple nodes for the junction network that is stored with the network equipment on following multiple resource blocks, the network equipment obtains transmission condition information of at least one node on a resource block from storage information.And for example, be stored with transmission condition information of multiple nodes on following multiple resource blocks of junction network in a first network equipment in junction network, and second network equipment can obtain transmission condition information of at least one node on a resource block from the storage information of first network equipment.
Finally, in step 150, transmission condition information of the network equipment according to service node receiving power data, node identification data, node Reference Signal Received Power data and at least one node on the resource block, the channel condition of downlink of the estimation user terminal on the resource block.
User terminal is when receiving data, and channel condition is affected by various factors, and such as other communication links are to the interference of the user terminal or the size for the transmission loss being sent between the node of user terminal data and user terminal.Channel condition can be characterized in several ways, such as the interference suffered by user terminal, the Signal to Interference plus Noise Ratio of user terminal received signal or signal interference ratio.
The network equipment can take the channel condition of downlink of the various ways estimation user terminal on a resource block.For example, the channel condition of downlink of the user terminal on a resource block is estimated by the Signal to Interference plus Noise Ratio calculated in formula 1, wherein, the power of the reference signal transmitted by service node received for user terminal, at least one node related to user terminal is that node 1 arrives node k, P.To for the receiving power corresponding to the node 1 received by user terminal to the reference signal transmitted by node k, when a node sends data on the resource block, A corresponding to the node is 1, when a node does not send data on the resource block, A corresponding to the node is 0, is thermal noise.
SINR =― ~~ s- formula 1
^+w and for example, when not considering the thermal noise in formula 1, can also estimate channel condition by the signal interference ratio for the reception reference signal for estimating downlink of the user terminal on a resource block.
In one embodiment of this method, in addition to step, the network equipment is according to the channel condition of estimation, it is determined that the resource scheduling scheme of the downlink communication for user terminal on the resource block.
Resource scheduling scheme at least includes one in following scheduling of resource：Transport block size, modulation system or code rate.Resource scheduling scheme may also include the transmit power of the data-signal for being sent to user terminal in the downlink.
By taking LTE system as an example, the network equipment is dry than selecting corresponding CQI to indicate according to the noise of estimation, to reach the purpose of scheduling of resource.Fig. 2 is the method flow diagram of offer feedback information in a user terminal according to an embodiment of the invention in junction network.
There is provided a kind of method that feedback information is provided in a user terminal in junction network for one embodiment according to a second aspect of the present invention.
As shown in Fig. 2 in step 210, user terminal sends a service node receiving power data, and it is used for the relevant information of the power for the reference signal that a service node belonging to the user terminal that indicating user terminal is received is launched.
Before step 210, user terminal can detect the reference signal of multiple nodes in junction network, and according to the result of detection select a node as the user terminal belonging to service node, such as select the reference signal that receives of user most strong node as service node.User terminal carries out direct information exchange with selected service node.
The mode that user terminal sends service node receiving power data is corresponding with the mode described in above-mentioned steps 110, will not be repeated here.
Secondly, in a step 220, the power of reference signal of the user terminal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node.
The power of the reference signal of a node measured by user terminal is the power that is measured on a resource block, the size of the resource block can be done with the above-mentioned network equipment resource block in the embodiment of channel condition estimation size is identical or difference.The method of the power of the reference signal of one node of user terminal measurement and multiple nodes can be identical with the method for reseptance of the reference signal power in cell searching in existing cellular communication system and cell switching, will not be repeated here.
User terminal can determine at least one node related to user terminal in several ways.For example, presetting a power threshold, if the performance number for the node reference signal that user terminal is received exceedes the power threshold, the node is just defined as a node at least one node related to user terminal by user terminal.
And for example, preset a power ratio threshold value, if the ratio of the reference signal power for the service node that the receiving power of the reference signal for the node that user terminal is received is received with the user terminal is more than power ratio threshold value, the node is just defined as a node at least one node related to user terminal by user terminal.
Then, in step 230, user terminal sends a node identification data, and it is used for the mark for indicating at least one node.
The mark of one node can be obtained by a variety of methods.For example in LTE systems, cell identity (ID) can by detect synchronizing channel obtain cell ID,
The mode of user terminal sending node mark data refers to the mode described in above-mentioned steps 120, is repeated no more in ^ an ancient type of spoons.
Finally, in step 240, user terminal sends a node Reference Signal Received Power data, and it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched.
The mode of user terminal sending node Reference Signal Received Power data refers to the mode described in above-mentioned steps 130, will not be repeated here.There is provided a kind of method that network equipment in junction network estimates downlink channel conditions of the user terminal on a resource block for one embodiment according to the third aspect of the present invention.This method comprises the following steps：
- user terminal sends a service node receiving power data, and it is used for the relevant information of the power for the reference signal that a service node belonging to the user terminal that indicating user terminal is received is launched；
The power of the reference signal of-user terminal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node；
- user terminal sends a node identification data, and it is used for the mark for indicating at least one node；
- user terminal sends a node Reference Signal Received Power data, and it is used for the relevant information of the power for the reference signal that at least one node that indicating user terminal receives is launched；
- the network equipment receives service node receiving power data；
- network equipment receiving node mark data；
- network equipment receiving node Reference Signal Received Power data；
- the network equipment obtains the transmission condition information of at least one node on resource block；And
- the network equipment is according to service node receiving power data, node identification data, node Reference Signal Received Power data and sends condition information, the channel condition of downlink of the estimation user terminal on resource block.
The operation of the network equipment and user terminal described in the above-mentioned embodiment for corresponding to the first aspect of the present invention and second aspect can apply to the third aspect of the present invention, i.e., a network equipment is estimated in the method for downlink channel conditions of the user terminal on a resource block in junction network.
The operation of the network equipment and user terminal is further described below by Fig. 3 and Fig. 4.Fig. 3 is the method flow diagram that a network equipment according to an embodiment of the invention in junction network estimates downlink channel conditions of the user terminal on a resource block.
As shown in figure 3, network equipment base station eNodeB is the service node of user terminal.Assuming that having 10 nodes in junction network.
First, in step 301, user terminal attempts the receiving power of multiple node N1 to N10 reference signal in measurement relay system.
Secondly, in step 302, user terminal finds the Reference Signal Received Power maximum corresponding to node N3 (i.e. base station eNodeB), it is thus determined that base station eNodeB is service node by cell searching.In step 303, base station eNodeB will be sent to by service node receiving power data corresponding to the Reference Signal Received Power of base station eNodeB.
Again, in step 303, in the 5th subframe, user terminal detects the reference signal of this 4 nodes of Nl, N4, N6 and N8, and the receiving power corresponding to the receiving power of the reference signal of 4 nodes and the reference signal corresponding to base station eNodeB is divided by, find to be more than predefined power ratio threshold value 0.1 corresponding to node N4 and N6 receiving power ratio.Therefore user determines that node N4 and N6 are the node related to the user terminal.
Then, in step 305, node N4 and N6 node identification are sent to base station eNodeB by user terminal by node identification data.Within step 306, user terminal will be sent to base station eNodeB corresponding to node N4 and N6 Reference Signal Received Power by node Reference Signal Received Power data.
Next, in step 307, base station eNodeB is by storing schedule information, it is determined that in the 8th subframe, N4 sends data, N6 does not send data.
Then, in step 308, Signal to Interference plus Noise Ratio of the base station eNodeB estimation user terminal in the 8th subframe, wherein signal is the Reference Signal Received Power corresponding to base station eNodeB, is disturbed as the Reference Signal Received Power corresponding to node N4.
Then, in a step 309, base station eNodeB determines modulation system and 2/3 code rate that resource scheduling scheme of the user terminal in the 8th subframe is QPSK according to the Signal to Interference plus Noise Ratio of the user terminal of the 8th subframe of estimation.And in the step 310, the scheme of determination is sent to user terminal in the way of CQI is indicated.
In step 311, user terminal finds that due to the movement of user terminal at least one related node becomes N1 and N8.Then user terminal repeats the operation similar with above-mentioned steps 305 to 310 with base station eNodeB.Fig. 4 is the method flow diagram of downlink channel conditions of the network equipment one user terminal of estimation on a resource block in junction network according to another embodiment of the invention.
As shown in figure 4, service node determined by user terminal is a subordinate via node, the subordinate via node is subordinated to host node base station eNodeB.The step of the step of shown in Fig. 4 is substantially with shown in Fig. 3 is essentially identical, difference is that correspond to channel condition estimation and the step 407 of scheduling of resource is carried out in the master node to 409, and subordinate via node is merely responsible for forwarding related data between user terminal and host node base station eNodeB.Fig. 5 is the schematic block diagram of the network equipment 500 according to an embodiment of the invention.There is provided a kind of network equipment 500 for being used to estimate downlink channel conditions of the user terminal on a resource block in junction network for one embodiment according to the fourth aspect of the invention.
The management network equipment 500 as shown in Figure 5 includes a receiver 510 ,-individual first device 520 and a second device 530.
Receiver 510 is used to receive a service node receiving power data.The service node receiving power data are used for the relevant information of the power for the reference signal that a service node belonging to the user terminal that indicating user terminal is received is launched.
Receiver 510 is additionally operable to receive a node identification data.The node identification data are used for the mark for indicating at least one node related to user terminal.
Receiver 510 is additionally operable to receive a node Reference Signal Received Power data.The node Reference Signal Received Power data are used for the relevant information for indicating the power for the reference signal that at least one node that the user terminal is received is launched.
First device 520 be used for obtain at least one node on resource block transmission situation letter from,
Second device 530 is used for according to service node receiving power data, node identification data, node Reference Signal Received Power data and sends condition information, the channel condition of downlink of the estimation user terminal on resource block.
In one embodiment of the network equipment 600, the network equipment 600 also includes a 3rd device（It is not shown）, it is used for the channel condition according to estimation, it is determined that the resource scheduling scheme of the downlink communication for user terminal on resource block.Resource scheduling scheme at least includes one in following scheduling of resource：Transport block size, modulation system or code rate.
Fig. 6 is the schematic block diagram of the just blunt user terminal 600 according to one embodiment of the present of invention.There is provided an a kind of user terminal 600 for being used to provide feedback information in junction network for one embodiment according to the fifth aspect of the invention.
User terminal 600 includes a first device 610 and a transmitter 620.
First device 610 is used for the power of the reference signal according to transmitted by received multiple nodes, and it is the node related to the user terminal to determine at least one node.
Transmitter 620 is used to send a node identification data.The node identification data are used for the mark for indicating at least one node.
Transmitter 620 is additionally operable to send a node Reference Signal Received Power data.The relevant information of the power for the reference signal that the node Reference Signal Received Power data are launched at least one node that indicating user terminal is received.
Transmitter 620 is additionally operable to send a service node receiving power data.The service node receiving power data are used for the relevant information of the power for the reference signal that a service node belonging to the user terminal that indicating user terminal is received is launched.
User terminal can determine at least one node related to user terminal in several ways.For example, presetting a power threshold, if the performance number for the node reference signal that user terminal is received exceedes the power threshold, the node is just defined as a node at least one node related to user terminal by user terminal.
And for example, preset a power ratio threshold value, if the ratio of the reference signal power for the service node that the receiving power of the reference signal for the node that user terminal is received is received with the user terminal is more than power ratio threshold value, the node is just defined as a node at least one node related to user terminal by user terminal.It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by appended claims rather than described above, it is intended that by fall the equivalency of claim implication and
In the range of all changes Nang include in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.Furthermore, it is to be understood that " include, a word is not excluded for other units or step, and odd number is not excluded for plural number.The multiple units or device stated in system claims can also be realized by a unit or device by software or hardware.The first, the second grade word is used for representing title, and is not offered as any specific order.
Claims (1)
- Claims1. a kind of method that downlink channel conditions of the user terminal on a resource block are estimated in a network equipment of junction network, the method comprising the steps of：A. a service node receiving power data are received, it is used to indicating the relevant information of the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched；B. a node identification data are received, it is used for the mark for indicating at least one node related to the user terminal；C receives a node Reference Signal Received Power data, and it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched；D. according to the node identification data, the transmission condition information of at least one node on the resource block is obtained；AndE. according to service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information, the channel condition of downlink of the user terminal on the resource block is estimated.2. the method according to claim 1, it is characterized in that, the ratio of the reference signal power for the service node that the reference signal power of each node at least one described node that the user terminal is received is received with the user terminal, more than one predefined power ratio threshold value.3. the method according to claim 1, it is characterised in that also include step after the step e：- according to the channel condition of the estimation, it is determined that the resource scheduling scheme of the downlink communication for the user terminal on the resource block.4. the method according to claim 3, it is characterised in that the resource scheduling scheme at least includes one in following scheduling of resource：Transport block size, modulation system or coding Speed.5. providing the method for feedback information in an a kind of user terminal in junction network, the method comprising the steps of：- a service node receiving power data are sent, it is used to indicating the relevant information of the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched；The power of-the reference signal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node；- a node identification data are sent, it is used for the mark for indicating at least one node；And- a node Reference Signal Received Power data are sent, it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched.6. method according to claim 5, it is characterized in that, the ratio of the reference signal power for the service node that the reference signal power of each node at least one described node that the user terminal is received is received with the user terminal, more than one predefined power ratio threshold value.7. a kind of network equipment for being used to estimate downlink channel conditions of the user terminal on a resource block in junction network, the network equipment includes：One receiver, it is used to receive a service node receiving power data, and the service node receiving power data are used for the relevant information for indicating the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launchedThe receiver is additionally operable to receive a node identification data, and the node identification data are used for the mark for indicating at least one node related to the user terminal,The receiver is additionally operable to receive a node Reference Signal Received Power data, the node Reference Signal Received Power data be used to indicating the user terminal receives it is described at least one The relevant information of the power for the reference signal that node is launched；One first device, it is used to obtain the transmission condition information of at least one node on the resource block；AndOne second device, it is used for the channel condition that downlink of the user terminal on the resource block is estimated according to the service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information.8. the network equipment according to claim 7, it is characterized in that, the ratio of the reference signal power for the service node that the reference signal power of each node at least one described node that the user terminal is received is received with the user terminal, more than one predefined power ratio threshold value.9. the network equipment according to claim 7, it is characterised in that also include：One 3rd device, it is used for the channel condition according to the estimation, it is determined that the resource scheduling scheme of the downlink communication for the user terminal on the resource block.10. the network equipment according to claim 9, it is characterised in that the resource scheduling scheme at least includes one in following scheduling of resource：Transport block size, modulation system or code rate.A kind of 1 1. user terminals for being used to provide feedback information in junction network, the user terminal includes：One first device, it is used for the power of the reference signal according to transmitted by received multiple nodes, and it is the node related to the user terminal to determine at least one node；AndOne transmitter, it is used to send a node identification data, and the node identification data are used for the mark for indicating at least one node；The transmitter is additionally operable to send a node Reference Signal Received Power data, and the node Reference Signal Received Power data are used for the relevant information for indicating the power for the reference signal that at least one described node that the user terminal is received is launched； The transmitter is additionally operable to send a service node receiving power data, and the service node receiving power data are used for the relevant information for indicating the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched.12. user terminal according to claim 11, it is characterized in that, the ratio of the reference signal power for the service node that the reference signal power of each node at least one described node that the user terminal is received is received with the user terminal, more than one predefined power ratio threshold value.13. a kind of method that network equipment in junction network estimates downlink channel conditions of the user terminal on a resource block, the method comprising the steps of：- the user terminal sends a service node receiving power data, and it is used to indicating the relevant information of the power for the reference signal that a service node belonging to the user terminal that the user terminal is received is launched；The power of the reference signal of-user terminal according to transmitted by received multiple nodes, it is the node related to the user terminal to determine at least one node；The one node identification data of-user terminal transmission, it is used for the mark for indicating at least one node；The one node Reference Signal Received Power data of-user terminal transmission, it is used for the relevant information for the power for indicating the reference signal that at least one described node that the user terminal is received is launched；- the network equipment reception service node receiving power data；- the network equipment reception node identification data；- the network equipment reception node Reference Signal Received Power data；- the network equipment obtains the transmission condition information of at least one node on the resource block；And- the network equipment estimates the channel condition of downlink of the user terminal on the resource block according to the service node receiving power data, the node identification data, the node Reference Signal Received Power data and the transmission condition information.
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| PCT/CN2009/074315 WO2011038542A1 (en) | 2009-09-29 | 2009-09-29 | Method and equipment for estimating downlink channel condition |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965518A (en) * | 2004-04-21 | 2007-05-16 | 三星电子株式会社 | Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas |
| CN101001097A (en) * | 2006-01-13 | 2007-07-18 | 阿尔卡特朗讯 | Method for performing adaptive subcarrier allocation, a base station, a mobile terminal and a multi cell network therefor |
| CN101052222A (en) * | 2007-05-09 | 2007-10-10 | 中兴通讯股份有限公司 | Determining method for channel quality instruction in high speed down block connection system |
| CN101374014A (en) * | 2007-08-24 | 2009-02-25 | 中兴通讯股份有限公司 | Feedback method for channel quality indication |
| US20090061886A1 (en) * | 2007-08-29 | 2009-03-05 | Carmela Cozzo | System and Method for Activity-Based Power Control Target Adjustments in a Wireless Communication Network |
| WO2009044686A1 (en) * | 2007-10-01 | 2009-04-09 | Ntt Docomo, Inc. | Mobile station device, base station device, upstream link and downstream link transmission method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101192871A (en) * | 2006-11-22 | 2008-06-04 | 北京三星通信技术研究有限公司 | Power control method for reduction of interference between relay systems |
| CN101282564B (en) * | 2007-04-05 | 2011-01-05 | 大唐移动通信设备有限公司 | Method and terminal for estimating channel quality indication in TDD system |
| CN101521902A (en) * | 2008-02-28 | 2009-09-02 | 华为技术有限公司 | Method for reporting downlink channel measurement information, terminal equipment and base station equipment |
-
2009
- 2009-09-29 CN CN200980159875.3A patent/CN102474868B/en active Active
- 2009-09-29 WO PCT/CN2009/074315 patent/WO2011038542A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965518A (en) * | 2004-04-21 | 2007-05-16 | 三星电子株式会社 | Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas |
| CN101001097A (en) * | 2006-01-13 | 2007-07-18 | 阿尔卡特朗讯 | Method for performing adaptive subcarrier allocation, a base station, a mobile terminal and a multi cell network therefor |
| CN101052222A (en) * | 2007-05-09 | 2007-10-10 | 中兴通讯股份有限公司 | Determining method for channel quality instruction in high speed down block connection system |
| CN101374014A (en) * | 2007-08-24 | 2009-02-25 | 中兴通讯股份有限公司 | Feedback method for channel quality indication |
| US20090061886A1 (en) * | 2007-08-29 | 2009-03-05 | Carmela Cozzo | System and Method for Activity-Based Power Control Target Adjustments in a Wireless Communication Network |
| WO2009044686A1 (en) * | 2007-10-01 | 2009-04-09 | Ntt Docomo, Inc. | Mobile station device, base station device, upstream link and downstream link transmission method |
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| WO2011038542A1 (en) | 2011-04-07 |
| CN102474868B (en) | 2014-07-23 |
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