CN101527936B - Layering isomeric wireless access network system and realization method for layering isomeric wireless access network - Google Patents
Layering isomeric wireless access network system and realization method for layering isomeric wireless access network Download PDFInfo
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Abstract
The invention discloses a layering isometric wireless access network system and a realization method for a layering isometric wireless access network. The system comprises a first wireless node layer using paired spectrums, a second wireless node layer using unpaired spectrums, a resource management and duplex control unit, a node dispatch control unit, a baseband processing unit and a wireless terminal, wherein the first wireless node layer comprises one or more first wireless nodes using the paired spectrums; the second wireless node layer comprises a plurality of second wireless nodes using the unpaired spectrums; the resource management and duplex control unit is used for managing and allocating the paired spectrums and the unpaired spectrums and controlling the first wireless nodes and the second wireless nodes to communicate with the wireless terminal in a mixed duplex mode of separated service and control; the node dispatch control unit is used for performing dispatching between the nodes on the wireless terminal; the baseband processing unit is used for performing baseband processing on signals from and/or sent to the first wireless nodes and/or the second wireless nodes; and the wireless terminal is operated on the spectrums used by the first and second wireless nodes.
Description
Technical field
The present invention relates to wireless communication field, particularly, relate to the implementation method of heterogeneous hierarchical wireless access network and heterogeneous hierarchical wireless access network.
Background technology
For the professional ability that improves network with reasonably use frequency spectrum, layered mobile communication Access Network framework is obtaining application more and more widely.Collaborative between 3-G (Generation Three mobile communication system) and the WLAN is exactly an application example of layering wireless access planar network architecture; At present; The layering wireless access network is as candidate's framework of IMT-Advanced system, receives in relevant research field and pays close attention to widely and study.
Make work in than low-frequency range (such as; Be lower than 3GHz) WAP (or base station) bear that big zone covers and provide professional to high speed mobile terminal; Make work in higher frequency band (such as; Be higher than 3GHz) WAP bear that the zonule covers and provide professional to low speed or quasi-static terminal, be that the tradition of layering wireless access planar network architecture is considered, this relates to introduces the interlayer handoff technique in layering wireless access planar network architecture.
In order further to improve the spectrum efficiency of layering wireless access network, emission of branch collection and diversity receiving technology have been produced at present based on layering wireless access planar network architecture.
For example; US5; 546, No. 443 U.S. Patent application discloses " wireless access system of a hierarchy and method of work ", and this system comprises macrocell and Microcell; All Microcells and macrocell shared control channel in the macrocell, control channel are used for transmission and insert solicited message, paging information, travelling carriage and base station position information etc.Further, Microcell also has a shared CCCH that is independent of hierarchy.The method of work of this system is: a business that inserts to the macrocell request is except being linked into this macrocell; Also be linked into a Microcell that belongs to this macrocell, use the realization of macrocell and Microcell the grand branch collection of the control channel of this link and the Hong Fenji of Traffic Channel.
Though above-mentioned transmit diversity and reception diversity technology can the raising system be in the spectrum efficiency of light condition; Even in principle; This technology can comprehensively use macrocell frequency spectrum resource and Microcell frequency spectrum resource to come the common high speed mobile terminal of supporting, still, the present inventor finds and should technology have following shortcoming at least: the frequency reuse mode that influences cellular system; Produce extra presence of intercell interference, comprehensive spectrum efficiency is not high in point-to-point service.
In order to reduce the complexity of the mobile management that Microcell produces when supporting portable terminal; Title has provided solution for the CN02814129.6 patent application of " hierarchical cellular radio communications system "; This system comprises a umbrella macrocell and a plurality of Microcells that covered by this macrocell, and each macrocell and Microcell comprise a controlling center.A secondary (terminal) has a communication channel of system communication therewith, and it is divided into control subchannel that is used for control information transmission and the subchannel data that is used for transmitting user data.The control subchannel is connected to the main website that serves macrocell with secondary (terminal), and subchannel data is connected to secondary (terminal) main website of service Microcell.The control section of said channel is mainly served by the umbrella macrocell, thereby reduces frequent mobile management expense, and data division is mainly by supporting the high data rate and the Microcell of big packing density to serve.
The present inventor finds that there is following shortcoming at least in said method: do not improve the occupation mode of control channel from the aspect of more basic duplex mode evolution, the combination property of layering wireless access network does not have too big improvement.
In order to realize under the layer architecture that to the tenability of non-symmetrical service, the method that complements each other between TDD system and the FDD system under the existing layer architecture has:
Title is that the US20050174954 U.S. Patent application of " method (Method of operating a TDD/virtual FDD hierarchical cellulartelecommunication system) of moving the virtual FDD hierarchical cellular of a TDD/ communication system " proposes; Under the situation that the TDD system is covered by the FDD system; Use remainder in the uplink spectrum of FDD as the data feedback channel of terminal FDD working method; Use the down going channel of TDD frequency spectrum, so just form the FDD duplex mode of " virtual " as terminal FDD working method.But this method is the combination to traditional TDD and traditional F DD duplex mode; And the basic problem of traditional TDD and traditional F DD does not solve; Such as; TDD lacks the tenability of supporting high-speed mobile, and FDD lacks the ability of supporting non-symmetrical service, and these basic problems have still been taken in the middle of the layering wireless access planar network architecture.
To sum up; In present layering wireless access planar network architecture that adopts and relevant method of work thereof; There is the problem that needs solution as follows: do not improve the occupation mode of control channel from the aspect of more basic duplex mode evolution, though in the prior art, such as; US5; 546, No. 443 U.S. Patent application discloses " wireless access system of a hierarchy and method of work ", has also proposed in the layer-specific access net, to carry out separating of control channel and Traffic Channel; But separating of Traffic Channel and control channel just carried out in this separation in the paired or non-paired frequency spectrum that same system uses; Between paired and non-paired frequency spectrum, do not carry out separating of Traffic Channel and control channel, therefore, prior art can't produce the reciprocity that both let business datum utilize non-paired frequency spectrum and to the flexibility of non-symmetrical service; Let simultaneously the such effect of low time delay of the paired frequency spectrum of control channel utilization again, can not improve the layering wireless access network to the flexible tenability of non-symmetrical service, to the spectrum efficiency of the terminal traffic under the high-speed mobile; And the method for replenishing each other between existing FDD system and the TDD system only is the combination to traditional TDD and FDD duplex mode, does not solve the basic problem of traditional TDD and FDD mode.In addition, present interlayer cooperates and is based on the interlayer handoff technique, does not use better dispatching technique in the layer and between the interlayer node of dynamic property.
Summary of the invention
Consider the one or more problems in the problems referred to above that exist in the correlation technique and propose the present invention; For this reason; The present invention aims to provide a kind of heterogeneous hierarchical wireless access network system and heterogeneous hierarchical wireless access network implementation method; It based on professional duplex mode and the node scheduling technology that is separated with control, can really realize organic the working in coordination with between FDD system and the TDD system through use, further improves the combination property of layering wireless access network.
According to an aspect of the present invention, a kind of heterogeneous hierarchical wireless access network system is provided.
Heterogeneous hierarchical wireless access network system according to the embodiment of the invention comprises: the first radio node layer that uses paired frequency spectrum; Wherein, The first radio node layer comprises first radio node of the paired frequency spectrum of one or more uses; Wherein, in pairs frequency spectrum comprise one be used for uplink frequency spectrum and be used for the frequency spectrum of downlink transfer; Use the second radio node layer of non-paired frequency spectrum, the second radio node layer comprises second radio node of the non-paired frequency spectrum of a plurality of uses, and wherein, non-paired frequency spectrum is a frequency spectrum of supporting the uplink and downlink transmission means; Resource management and duplexing control unit; Be used for paired frequency spectrum and non-paired frequency spectrum are managed and distributed; And control first radio node and second radio node with professional with control communicating by letter of the mixing duplex mode that is separated and wireless terminal; Wherein, Mix in the duplex mode with control is separated professional, the second radio node layer be used for time division duplex carry wireless terminal/downlink service data, the first radio node layer is used for the needed control data of carrying transmission/downlink service data; Scheduling controlling unit between node; Be used to adopt one of following mode wireless terminal to be carried out dispatching between node: to select optimum node from the second radio node layer through the first radio node layer; And give wireless terminal with the part or all of resource assignation of optimum node; With, from the first radio node layer and the second radio node layer, select optimum node, and give wireless terminal the part or all of resource assignation of optimum node; Baseband processing unit, be used for to from and/or the signal that is sent to first radio node and/or second radio node carry out Base-Band Processing; Wireless terminal works on first radio node and the employed frequency spectrum of second radio node, is used for communicating with the heterogeneous hierarchical wireless access network.
Preferably, the scheduling controlling unit is through scheduling control signaling between the first radio node layer transmission/receiving node, so that wireless terminal is carried out dispatching between node between above-mentioned node.
Preferably, the communication mode of first radio node and wireless terminal is one of following mode: the paired frequency spectrum that uses first radio node to use, divide duplex mode or Half-Frequency Division Duplex mode and wireless terminal communications with full range; Under the control of resource management and duplexing control unit, the non-paired frequency spectrum that uses partial frequency spectrum and second radio node in the paired frequency spectrum that first radio node uses to use, with professional with control be separated mix duplex mode and wireless terminal communications.
Preferably, the communication mode of second radio node and wireless terminal is one of following mode: the non-paired frequency spectrum that uses second radio node to use, with time division duplex and wireless terminal communications; Under the control of resource management and duplexing control unit; Use the partial frequency spectrum in the paired frequency spectrum that part or all of frequency spectrum and first radio node in the non-paired frequency spectrum that second radio node uses use, with professional with control be separated mix duplex mode and wireless terminal communications.
Preferably, baseband processing unit with the mode of distributed base station to from and/or the signal that is sent to second radio node and/or first radio node carry out Base-Band Processing.
Preferably; First radio node is used for the covering of macrocell; Second radio node is used for the covering of Microcell or macrocell, wherein, has one or more Microcells or one or more second radio nodes that are used to cover Microcell in the macrocell that first radio node is covered; Perhaps, first radio node macrocell that is covered and the Microcell that is covered by one or more second radio nodes overlaps.
Preferably, first radio node comprise following any: with the radio frequency unit of the base station that has Base-Band Processing of FDD mode work or with the remote radio unit (RRU) of the distributed base station of FDD mode work; Second radio node comprise following any: with the radio frequency unit of the base station that has Base-Band Processing of time division duplex work, with the remote radio unit (RRU) of the distributed base station of time division duplex work, or with the wireless digital repeater of time division duplex work.
Preferably, baseband processing unit and resource management and duplexing control unit are present among the heterogeneous hierarchical wireless access network system as same network element.Perhaps, baseband processing unit and resource management and duplexing control unit are present among the heterogeneous hierarchical wireless access network system as different network elements.
According to a further aspect in the invention; A kind of implementation method of heterogeneous hierarchical wireless access network is provided; Wherein, The heterogeneous hierarchical wireless access network comprises first radio node layer that uses paired frequency spectrum and the second radio node layer that uses non-paired frequency spectrum, in pairs frequency spectrum comprise one be used for uplink frequency spectrum and be used for the frequency spectrum of downlink transfer, non-paired frequency spectrum is a frequency spectrum of supporting the uplink and downlink transmission means.
Implementation method according to the heterogeneous hierarchical wireless access network of the embodiment of the invention comprises following processing: use the second radio node layer with time division duplex carry wireless terminal on/downlink service data; Use the first radio node layer to carry and transmit/the needed control data of downlink service data; Use the first radio node layer that wireless terminal is carried out dispatching between node, wherein, one of following mode is adopted in scheduling between node: according to the signal quality of each node; Select optimum node from the second radio node layer; And with the part or all of resource assignation of optimum node give wireless terminal and, according to the signal quality of each node; From the first radio node layer and the second radio node layer, select optimum node, and give wireless terminal the part or all of resource assignation of optimum node.
Preferably, the load mode of control data be following any: in pairs two frequency spectrums in the frequency spectrum are all worked with the FDD mode, and the frequency spectrum that is used for uplink carries the upload control data, is used for the frequency spectrum bearing downlink control data of downlink transfer; Frequency spectrum that is used for uplink and non-paired frequency spectrum in the frequency spectrum worked with the FDD mode in pairs, and the frequency spectrum that is used for uplink carries upload control data, non-paired frequency spectrum bearer service data; Frequency spectrum that is used for downlink transfer and non-paired frequency spectrum in the frequency spectrum worked with the FDD mode in pairs, is used for the frequency spectrum bearing downlink control data of downlink transfer, non-paired frequency spectrum bearer service data.
Preferably, non-paired frequency spectrum be the combination of discontinuous a plurality of non-paired frequency spectrums on the frequency domain or on frequency domain continuous one section non-paired frequency spectrum.
Through above-mentioned at least one technical scheme of the present invention; Realized following beneficial effect: through in the layering wireless access network, introducing the professional duplex mode that is separated with control; Make wireless access system both kept TDD channel reciprocity and on/flexibility of downlink business; Have the various advantages of the low feedback delay of FDD again concurrently, thereby improved dynamic property and throughput that TDD eats dishes without rice or wine.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the configuration diagram that illustrates according to the heterogeneous hierarchical wireless access network system of the embodiment of the invention;
Fig. 2 is the flow chart according to the implementation method of the heterogeneous hierarchical Radio Access Network of the embodiment of the invention;
Fig. 3 mixes the sketch map of duplex to the use of frequency spectrum according to what the business of the embodiment of the invention and control were separated;
Fig. 4 is the sketch map that uses the mixing duplex mode according to the heterogeneous hierarchical wireless access network of the embodiment of the invention;
Fig. 5 is the sketch map of dispatching according between the heterogeneous hierarchical wireless access network use half-duplex FDD of the embodiment of the invention and interlayer node;
Fig. 6 is the sketch map of dispatching according between the heterogeneous hierarchical wireless access network use mixing duplex mode of the embodiment of the invention and layer interior nodes.
Embodiment
As stated; In present layering wireless access planar network architecture that adopts and relevant method of work thereof; Produced and in the layer-specific access net, carried out control channel and reduce the switching frequency of portable terminal between Microcell separating of Traffic Channel; Simplifying to the such technology of the mobile management at terminal, but this control channel with just in same system, carry out separating of Traffic Channel, perhaps just in the employed paired or non-paired frequency spectrum of individual system, carry out separating of Traffic Channel and control channel; And between paired and non-paired frequency spectrum, do not carry out separating of Traffic Channel and control channel; Therefore, prior art can't produce the reciprocity that both let business datum utilize non-paired frequency spectrum and to the flexibility of non-symmetrical service, lets the such effect of low time delay of the paired frequency spectrum of control channel utilization simultaneously.As for constituting the method for mixing duplex through the frequency spectrum of using the other side each other between FDD system in the prior art and the TDD system; Such as; Let wireless terminal use in the paired frequency spectrum of FDD system a part and the part in the non-paired frequency spectrum in the TDD system with entirely/mode of Half-Frequency Division Duplex works; Only be combination, do not solve the basic problem of traditional TDD and FDD mode traditional TDD and FDD duplex mode.
Given this; Collaborative work between TDD system and the FDD system is a development trend of wireless access network; And follow the collaborative work between TDD system and the FDD system and what produce is the gathering of paired frequency spectrum and non-paired frequency spectrum; The gathering of frequency spectrum and non-paired frequency spectrum has been established physical basis for making up new duplex mode in pairs, realizes that on this basis Traffic Channel just can make up the mixing duplex mode that makes new advances with control channel separating on non-paired and paired frequency spectrum.
To eat dishes without rice or wine to realize that macrocell covers by FDD; Eat dishes without rice or wine to realize that by TDD Microcell covers such one type of layering wireless access network; The embodiment of the invention provides a kind of heterogeneous hierarchical wireless access network system and heterogeneous hierarchical wireless access network implementation method: at first; In the heterogeneous hierarchical wireless access network, introduce business and controlled duplexing this new duplex mode that mixes that is separated; Make the layering wireless access network both kept TDD channel reciprocity and on/flexibility of downlink business, have the various advantages that the low feedback delay of FDD brings again concurrently, thereby can improve dynamic property and the throughput that TDD eats dishes without rice or wine; Secondly; In the heterogeneous hierarchical wireless access network, introduced between node and dispatched; Comprise between the interlayer node between scheduling and layer interior nodes and dispatching; To reach following effect: 1) make high-end frequency spectrum (such as, near the 5GHz) go up with the Microcell radio node of TDD mode work and support high speed mobile terminal, thereby expanded the range of application of high-end frequency spectrum; 2) improvement is positioned at the transmission rate at the terminal at Microcell edge.
The heterogeneous hierarchical wireless access network of below describing is that the basis makes up with the system of 3GPP LTE FDD standard criterion and the system of 3GPP LTE TDD standard institute standard, and this heterogeneous hierarchical wireless access network can be supported following working method: (1) professional duplex mode (SCS-HDD:Hybrid Division Duplex based on theSeparation of Control and Service) that is separated with control; (2) half-duplex FDD (Half FrequencyDivision Duplex, or (T+F) DD); (3) dispatch between scheduling and interlayer node between layer interior nodes.
For two types of frequency spectrums that hereinafter relate to, that is, in pairs frequency spectrum and non-paired frequency spectrum, usually, in pairs frequency spectrum comprise one be used for uplink frequency spectrum and be used for the frequency spectrum of downlink transfer, non-paired frequency spectrum is the frequency spectrum that uses in a bi-directional way.
Usually, frequency spectrum B is distributed the non-paired frequency spectrum as the TDD system.Particularly, frequency spectrum B is the frequency spectrum that uses in a bi-directional way, both can be used for up transmission, also can be used for descending transmission.For the duplex mode environment that adopts business and control to be separated, collocating uplink and downlink traffic channel on frequency spectrum B.On the frequency spectrum B except the bearer service data, also carry the reference symbol (or frequency pilot sign) be used for channel estimating.Wherein, frequency spectrum B can also can be the combination of discontinuous a plurality of non-paired frequency spectrums on frequency domain for one section continuous on frequency domain non-paired frequency spectrum, for the frequency spectrum B of combination, can realize professional a plurality of TDD system synergistic workings that provide flexibly and realize.
Frequency spectrum U is the frequency spectrum that only is used for uplink, and usually, frequency spectrum U is the uplink spectrum of the paired frequency spectrum of FDD system use; Frequency spectrum D is the frequency spectrum that only is used for downlink transfer, and usually, frequency spectrum D is the uplink spectrum of the paired frequency spectrum that uses of FDD system, and frequency spectrum D can be the frequency spectrum that is used for downlink broadcast also, as frequency spectrum is used in the broadcasting that is used for MBMS or DVB-T.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
System embodiment
According to the embodiment of the invention, a kind of heterogeneous hierarchical wireless access network system is provided.
Fig. 1 is the structural representation that illustrates according to the heterogeneous hierarchical wireless access network system of the embodiment of the invention.Wherein, the adjacent band interference for fear of between TDD and the FDD system is installed on the TDD system respectively on the different sites with the FDD system in the present embodiment.
As shown in Figure 1, comprise according to the heterogeneous hierarchical wireless access network system of the embodiment of the invention:
(1) the first radio node layer of the paired frequency spectrum of use; Wherein, the first radio node layer comprises first radio node (one first radio node 101 has been shown among Fig. 1) of the paired frequency spectrum of one or more uses, wherein; As stated; Here the paired frequency spectrum of mentioning comprise one be used for uplink frequency spectrum (for example, frequency spectrum U) and be used for the frequency spectrum (for example, frequency spectrum D) of downlink transfer; Wherein, First radio node can be following any: with the radio frequency unit of the base station that has Base-Band Processing of FDD mode work or with the base station of the remote radio unit (RRU) (Remote Radio Unit abbreviates RRU as) of the distributed base station of FDD mode work, wireless repeater, support 3GPP LTE FDD standard etc.;
(2) the second radio node layer of the non-paired frequency spectrum of use; The second radio node layer comprises second radio node 102 (three second exemplary radio node 102a-102c have been shown among Fig. 1) of the non-paired frequency spectrum of a plurality of uses; These second radio nodes with the work of TDD mode can be to use the radio node with a kind of air-interface standard; Also can be to use the radio node of different air-interface standards; Wherein, non-paired frequency spectrum is a frequency spectrum (for example, frequency spectrum B) of supporting the uplink and downlink transmission means; Wherein, second radio node can be following any: with the radio frequency unit of the base station that has Base-Band Processing of time division duplex work, with the remote radio unit (RRU) of the distributed base station of time division duplex work, with the wireless digital repeater of time division duplex work, or support the base station etc. of 3GPP LTE TDD standard;
(3) baseband processing unit 107, be used for to from and/or the signal that is sent to first radio node and/or the second radio node layer carry out Base-Band Processing, particularly, baseband processing unit carries out Base-Band Processing with the mode of distributed base station to above-mentioned signal;
This baseband processing unit can be used as same network element with resource management and duplexing control unit and be present among the heterogeneous hierarchical wireless access network system, also can be used as different network elements and is present among the heterogeneous hierarchical wireless access network system;
Baseband processing unit also is used to obtain the duplex ability information at terminal; And above-mentioned information offered resource management and duplexing control unit 104, so that resource management and duplexing control unit can be according to the frequency spectrum resource situation of interdependent node in the current first and second radio node layers and the duplex modes at the duplex ability information Control terminal that baseband processing unit provides;
In addition, baseband processing unit also is used for the channel quality measurement data of terminal to report is offered scheduling controlling unit 108 between node, so that the scheduling controlling unit can carry out dispatching between node to the terminal according to channel quality condition between node;
(4) one or more resource managements and duplexing control unit 104; Be used for paired frequency spectrum (frequency spectrum U and frequency spectrum D) and non-paired frequency spectrum (frequency spectrum B) are managed and distributed, and control first radio node 101, second radio node 102 with professional with control communicating by letter of the mixing duplex mode that is separated and wireless terminal;
(5) scheduling controlling unit 108 between node is used for wireless terminal 103 is carried out dispatching between node; Scheduling control signaling between the node that particularly, the scheduling controlling unit is used for wireless terminal is carried out dispatching between node through the transmission/reception of first node layer between node.
(6) wireless terminal 103, work on first radio node and the employed frequency spectrum of second radio node, are used for communicating with the heterogeneous hierarchical wireless access network.Wireless terminal 103 can support to use employed all air-interface standards of radio node in the radio node layer of non-paired frequency spectrum, also can only support to use the part of the employed multiple air-interface standard of radio node in the radio node layer of non-paired frequency spectrum.Particularly, wireless terminal 103 can be a dual-mode terminal of supporting 3GPP LTE FDD and TDD standard, can on following frequency spectrum, work with half-duplex FDD mode: (1) frequency spectrum U and frequency spectrum D; (2) frequency spectrum U and frequency spectrum B; (3) frequency spectrum D and frequency spectrum B, and, can also on non-paired frequency spectrum B, work with the TDD mode.
Preferably, there is low time delay transmission channel between first radio node of covering second radio node in second radio node and the first radio node layer.
Preferably; First radio node is used for the covering of macrocell 105; Second radio node is used for the covering of Microcell or macrocell, wherein, exists second radio node that one or more Microcells or one or more are used to cover Microcell (for example in the macrocell; In 101 region covered of first radio node; Existence is with the radio node layer of the non-paired frequency spectrum of use of a plurality of second radio nodes, 102 formations of TDD mode work), perhaps, macrocell overlaps with the Microcell that is covered by one or more second radio nodes.
Wherein, the channel on the frequency spectrums of operation (frequency spectrum B) of frequency spectrum (frequency spectrum D, frequency spectrum U) access second radio node 102 that uses from first radio node 101 of wireless terminal 103.In order to realize this access; Radio frames between FDD system and the TDD system keeps specific synchronized relation in time; A kind of synchronized relation is as shown in Figure 4: fixed delay Td of zero-time lag or lead FDD radio frames of TDD radio frames, the span of Td is :-10ms＜Td＜10ms.Td gets the frame head of the leading in time FDD radio frames of frame head that negative value is represented the radio frames of TDD, Td get null value represent TDD radio frames frame head in time with the frame head strict synchronism of FDD radio frames.
Below will describe the various aspects of above-mentioned processing in detail.
(1) professional with control the duplex mode that mixes that is separated
Business mentioned above with control be separated mix in the duplex mode; The second radio node layer be used for the TDD mode carry wireless terminal/downlink service data, the first radio node layer is used for carrying the needed control data of transmission/downlink service data.
That is to say; The characteristics of first radio node 101 are; Except the function of supporting 3GPP LTEFDD prescribed by standard; Also on frequency spectrum U and frequency spectrum D, support the transmission of the duplexing needed control data of mixing of the present invention, its support pattern can be one of following mode: (1) radio node 101 takies the control data that control channel resource in the 3GPP LTE FDD standard is transmitted as the transmission service of the business datum on the frequency spectrum B; (2) radio node 101 takies the control data that traffic channel resource in the 3GPP LTE FDD standard is transmitted as the transmission service of the business datum on the frequency spectrum B.
Characteristics with second radio node 102 of TDD mode work are, can work with following three kinds of modes: (1) can provide professional to wireless terminal 103 so that the mode of 3GPP LTE TDD prescribed by standard is independent; (2) can be under the management and control of resource management and duplexing control unit 104; Being divided into two parts to the resource of frequency spectrum B uses; The mode that part frequency spectrum, radio-frequency channel, processing resource are used for the TDD prescribed by standard independently provides professional to wireless terminal 103; Part frequency spectrum, radio-frequency channel, processing resource are used for business of the present invention and control the duplex mode that mixes that is separated; I.e. bearer service data on these channels on the frequency spectrum B only, the needed control data of service data transmission is by frequency spectrum D and frequency spectrum U carrying; This mode is that 3GPP LTE FDD standard and 3GPP LTE TDD standard realize a kind of mode of seamlessly transitting in the multi-network cooperative evolution process; Whole frequency spectrums of (3) second radio nodes 102, radio-frequency channel, processing resource are used for mixing duplex of the present invention; I.e. bearer service data on these channels on the frequency spectrum B only, the needed control data of service data transmission is by frequency spectrum D and frequency spectrum U carrying.In the following description, will be that example is described with the 2nd kind of above-mentioned mode of operation.
Through introducing the duplex mode that mixes that professional and control is separated, make this heterogeneous hierarchical wireless access network both keep the channel reciprocity of TDD and the flexibility of up-downgoing business, have the various advantages that the low feedback delay of FDD brings again concurrently.
Mix duplex mode based on what above-described business and control were separated, communicating by letter and can be described below between first or second radio node and the wireless terminal:
The communication mode of (1) first radio node and wireless terminal comprises: the paired frequency spectrum that uses first radio node to use, with full FDD mode or Half-Frequency Division Duplex mode and wireless terminal communications; Under the control of resource management and duplexing control unit, the non-paired frequency spectrum that uses partial frequency spectrum and second radio node in the paired frequency spectrum that first radio node uses to use, with professional with control be separated mix duplex mode and wireless terminal communications.
The communication mode of (2) second radio nodes and wireless terminal comprises: the non-paired frequency spectrum that uses second radio node to use, with TDD mode and wireless terminal communications; Under the control of resource management and duplexing control unit; Use the partial frequency spectrum in the paired frequency spectrum that part or all of frequency spectrum and first radio node in the non-paired frequency spectrum that second radio node uses use, with professional with control be separated mix duplex mode and wireless terminal communications.
As stated; High band (frequency spectrum that 3GHz is above) is though very abundant; But under existing Access Network framework and duplex mode; The abundant frequency spectrum of this section can not be supported high-speed mobile, mixes duplex mode through what business provided by the invention and control were separated, can be so that this frequency spectrum is supported high-speed mobile.
(2) dispatch between node
The mode that the scheduling controlling unit carries out dispatching between node through the first radio node layer to wireless terminal between node comprises following two kinds: (mode one) selected optimum node from the second radio node layer; And give wireless terminal with the part or all of resource assignation of optimum node, this scheduling mode is called between layer interior nodes in this article to be dispatched; (mode two) selected optimum node from the first radio node layer and the second radio node layer, and gives wireless terminal with the part or all of resource assignation of optimum node, and this scheduling mode is called between the interlayer node in this article to be dispatched.
Through dispatching between above-mentioned node, comprehensively use macrocell layer frequency spectrum resource and Microcell frequency spectrum resource to come the common high speed mobile terminal of supporting, expanded the range of application of high-end frequency spectrum, improved the transmission rate of cell edge.
Method embodiment
According to the embodiment of the invention; A kind of implementation method of heterogeneous hierarchical wireless access network is provided; Wherein, the heterogeneous hierarchical wireless access network comprises first radio node layer that uses paired frequency spectrum (frequency spectrum U and frequency spectrum D) and the second radio node layer that uses non-paired frequency spectrum, wherein; Non-paired frequency spectrum (frequency spectrum B) is a frequency spectrum of supporting the uplink and downlink transmission means, in pairs frequency spectrum comprise one be used for uplink frequency spectrum (frequency spectrum U) and be used for the frequency spectrum (frequency spectrum D) of downlink transfer.
Fig. 2 is the flow chart that illustrates according to the implementation method of the heterogeneous hierarchical wireless access network of the embodiment of the invention, and as shown in Figure 2, this method comprises following processing:
Step S202, use the second radio node layer with time division duplex carry wireless terminal on/downlink service data; Use the first radio node layer to carry and transmit/the needed control data of downlink service data;
Step S204 uses the first radio node layer that wireless terminal is carried out dispatching between node.
Below will further describe each details of above-mentioned processing.
(1) step S202
In step S202; As shown in Figure 3; The load mode of control data be following any: (mode one) in pairs two frequency spectrums in frequency spectrum all works with the FDD mode, and one of them frequency spectrum (frequency spectrum U) carries upload control data, another frequency spectrum (frequency spectrum D) bearing downlink control data; The frequency spectrum that is used for uplink (frequency spectrum U) in (mode two) paired frequency spectrum is worked with the FDD mode with non-paired frequency spectrum (frequency spectrum B), and frequency spectrum U carries upload control data, frequency spectrum B bearer service data; The frequency spectrum that is used for downlink transfer (frequency spectrum D) in (mode three) paired frequency spectrum is worked frequency spectrum D bearing downlink control data, frequency spectrum B bearer service data with non-paired frequency spectrum (frequency spectrum B) with the FDD mode.Here mentioning the FDD that the FDD mode can be a full duplex, also can be half-duplex FDD.
Through this processing; Make the heterogeneous hierarchical wireless access network can supporting business mix duplex (SCS-HDD:Hybrid Division Duplex based on theSeparation of Control and Service) with control is separated; And then make this heterogeneous hierarchical wireless access network both keep the professional flexibility of channel reciprocity and up-downgoing of TDD, have the various advantages that the low feedback delay of FDD brings again concurrently.
(2) step S204
In this step, the mode of dispatching between node be following any: (1) layer is dispatched between interior nodes, according to the signal quality of each node, selects optimum node from the second radio node layer, and gives wireless terminal with the part or all of resource assignation of optimum node; (2) dispatch between the interlayer node, according to the signal quality of each node, from the first radio node layer and the second radio node layer, select optimum node, and give wireless terminal the part or all of resource assignation of optimum node; The effect of dispatching between the interlayer node is the complementation on signal covers between the radio node layer of realizing using the radio node layer of non-paired frequency spectrum and using paired frequency spectrum.
With reference to the sketch map of Fig. 1, top processing can be described below:
Dispatch between layer interior nodes: wireless terminal reports resource management and duplexing control unit 104 with the signal quality data of one group of second radio node (such as radio node 102a, radio node 102b and radio node 102c) that belongs to the radio node layer (the second radio node layer) that uses non-paired frequency spectrum that it detects; Resource management and duplexing control unit 104 are according to predetermined principle; Use the radio node of non-paired frequency spectrum from these; Radio node for an optimum of wireless terminal assignment; Such as radio node 102b, be used to carry the business datum at terminal.
Dispatch between the interlayer node: wireless terminal belongs to its group of detecting the radio node (such as radio node 102a, radio node 102b and radio node 102c) of the radio node layer that uses non-paired frequency spectrum; And one group of signal quality data that belongs to the radio node (such as radio node 101) of the radio node layer that uses paired frequency spectrum reports resource management and duplexing control unit 104; Resource management and duplexing control unit 104 are according to predetermined principle; Use the radio node of non-paired frequency spectrum and paired frequency spectrum from these; Be the radio node of an optimum of wireless terminal assignment, be used to carry the business datum at terminal.
Through this processing, can comprehensively use macrocell layer frequency spectrum resource and Microcell frequency spectrum resource to come common support high speed mobile terminal, thereby expand the range of application of high-end frequency spectrum.
Below further combine instance to describe the technical scheme that the embodiment of the invention provides.
Instance one: the heterogeneous hierarchical wireless access network uses the duplexing SCS-HDD mode of mixing
Fig. 4 uses the sketch map that mixes duplex mode according to the heterogeneous hierarchical wireless access network of the embodiment of the invention, below describes the processing in this instance with reference to Fig. 4.
At first, the access of Traffic Channel in wireless terminal is accomplished the radio node layer that uses non-paired frequency spectrum on the radio node layer that uses paired frequency spectrum.
In time T 1, the frequency spectrum (frequency spectrum D) that wireless terminal 103 uses at radio node 101 is gone up and is accomplished cell synchronizing and obtain the cell broadcast information that frequency spectrum issues.Can comprise the availability indication of the Traffic Channel on the frequency spectrum B in the cell broadcast information, such as, whether exist on the frequency spectrum B to can be used for professional being separated and mix duplexing resource with control;
In time T 2; Wireless terminal 103 asks to insert frequency spectrum B through frequency spectrum U on network, further, wireless terminal 103 comprises the professional ability information of self in the information the inside that reports request to insert frequency spectrum B; Such as, comprise and have supporting business and be separated with control and mix duplexing ability;
In time T 3, network issues the resource grant data on the frequency spectrum B through the control channel on the frequency spectrum D to wireless terminal 103.The duplex ability that the resource management of network side and duplexing control unit 104 report according to wireless terminal; Send to the terminal and to use professional being separated to mix duplexing control command with control; And, distribute the resource size and the resource location of up-downgoing Traffic Channel to wireless terminal 103, like channel position.In this example, network is that the resource of wireless terminal 103 domination is as shown in Figure 4: the transport block set that the ascending time slot 5 and 6 on the radio frames that belongs to radio node 102 on frequency spectrum B, the Resource Block in the time slot 9 and 10 are used to carry uplink business data; Resource Block in the descending time slot 11 and 12 on the radio frames on frequency spectrum B, 16 and 17 is used for the transport block set of bearing downlink business datum; Time slot 12 on frequency spectrum D is used to transmit descending control data; Time slot 18 on the frequency spectrum U is used to transmit the upload control data;
Afterwards, wireless terminal 103 network for its distribution belong to frequency spectrum B on/transmission of the enterprising industry affair of downlink traffic channel data.Wireless terminal uses professional and control to be separated to mix the process of the duplexing transmission of carrying out uplink business data following:
Afterwards, wireless terminal uses professional and control to be separated to mix and duplexingly carries out the transmission of downlink service data, and process is following:
At wireless terminal 103 through the transmission channel on the radio node 102; At moment A; Wireless terminal inserts the descending time slot 11 and 12 on the frequency spectrum B, during this period of time accomplishes after the reception of the business datum that the transmission data block in the Transmission Time Interval (TTI) gathers, at moment B; Time slot 18 on the radio frames on the frequency spectrum U that wireless terminal 103 access radio nodes 101 use; In this time slot, send data feedback control to network, such as, Adaptive Modulation and Coding control data (AMC) adjustment data, repeat requests data (ARQ), channel status or channel quality designation data etc.; Radio node 101 is according to its emission parameter of data feedback control adjustment of these terminal to report; Afterwards; At moment C; The sendaisle that wireless terminal 103 inserts on the radio node 102 is accomplished the reception of the business datum of the transmission data block set in the next Transmission Time Interval (TTI) in the descending time slot 16 and 17 on frequency spectrum B.
Instance two: the heterogeneous hierarchical wireless access network uses half-duplex FDD mode, adopts between the interlayer node and dispatches
The heterogeneous hierarchical wireless access network that Fig. 5 shows according to the embodiment of the invention uses the sketch map of dispatching between half-duplex FDD and interlayer node, and as shown in Figure 5, the implementation procedure of this instance can be described below:
At moment T1; Wireless terminal uses the time slot 1 of the radio frames on the frequency spectrum U to send the uplink scheduling solicited message and to the metrical information of the wireless node signals in the radio node in the radio node layer (the first radio node layer) that uses paired frequency spectrum and the radio node layer (the second radio node layer) that uses non-paired frequency spectrum; Comprise signal quality information to radio node 101 and radio node 102; Such as, report signal measurement data to contiguous a plurality of radio node 102a～102c; At moment T2, the time slot 5 receiving scheduling control command datas of wireless terminal from the frequency spectrum D, the time slot that is to use the radio frames on the frequency spectrum U 14 and 15 transmission uplink business datas of wireless terminal given in received scheduling controlling order assignment.
Instance three: the heterogeneous hierarchical wireless access network uses the SCS-HDD mode, adopts between the interlayer node and dispatches
Fig. 6 is that the heterogeneous hierarchical wireless access network use to mix the sketch map of dispatching between duplex mode and layer interior nodes, below describes the implementation procedure of this instance with reference to Fig. 6.
At moment T1; The metrical information that wireless terminal uses the time slot 1 of the radio frames on the frequency spectrum U to send the wireless node signals in the radio node layer (the second radio node layer) that uses non-paired frequency spectrum; Such as, to two contiguous radio node 102a, the measurement data of 102b signal, at moment T2; Wireless terminal receives the descending scheduling control command data from the time slot 5 on the frequency spectrum D; Received descending scheduling control command assignment receives downlink service data to the resource on the time slot 7 and 8 on the wireless sub-frame 101a that is to use the radio node 102a use on the frequency spectrum B of wireless terminal, and then, 1. wireless terminal is carrying out the reception of downlink data constantly.
At moment T3; The metrical information that wireless terminal uses the time slot 17 of the radio frames on the frequency spectrum U to send the wireless node signals in the radio node layer that uses non-paired frequency spectrum; Such as, to two contiguous radio node 102a, the measurement data of 102b signal, at moment T4; Wireless terminal receives the descending scheduling control command data from the time slot 19 on the frequency spectrum D; Received descending scheduling control command assignment receives downlink service data to the resource on the time slot 19 and 20 on the wireless sub-frame 104b that is to use the radio node 102b use on the frequency spectrum B of wireless terminal, and then, 2. wireless terminal is carrying out the reception of downlink data constantly.
In the present embodiment, because the Traffic Channel on the frequency spectrum B on the radio node 102 is inserted from the frequency spectrum D that radio node 101 uses in terminal 103, can significantly shorten its turn-on time, has the quick access the same with the FDD system; Because the transfer of data of terminal 103 on frequency spectrum B can equally with FDD obtain quick FEEDBACK CONTROL, its spectrum efficiency, the particularly spectrum efficiency under high-speed mobile condition can be the same with the FDD system.
In the instance that provides, omitted the details of 3GPP LTE TDD TYP II wireless frame structure in the above, such as, three special time slots that do not draw, this do not influence embodiments of the invention with and the enforcement of instantiation.The business that the embodiment of the invention provides and control are separated mixes duplex method and is applicable to the collaborative work between any FDD system and any TDD system, and in this article, the general character that only is directed against the TDD system is discussed.
Because business datum is the main radio bearers of wireless access network, and the asymmetric of the load of eating dishes without rice or wine mainly be that business datum causes, and in the present embodiment, the mode that business datum adopts the TDD mode to transmit has guaranteed the service efficiency of frequency spectrum; And the up-downgoing of control data transmission has symmetric characteristics; Therefore FDD mode transmitting control data is a kind of reasonable manner; And the characteristics of the low time delay of FDD have guaranteed the quick feedback of control data, thereby make to have good dynamically adapting ability with TDD mode loaded service data.
The above embodiment of the present invention and the example are that the system with the system of 3GPP LTE FDD standard criterion and 3GPP LTE TDD standard institute standard is that the basis makes up a heterogeneous hierarchical wireless access network; But the invention is not restricted to the heterogeneous hierarchical wireless access network between above-mentioned two systems; Same principle and implementation process; Can be applicable to the heterogeneous hierarchical wireless access network that constitutes between other FDD and the TDD system; Such as, according to the described method of present embodiment, can also realize following heterogeneous hierarchical wireless access network:
(1) in the heterogeneous hierarchical wireless access network; The radio node layer (the first radio node layer) that uses paired frequency spectrum is made up of the base station or the RRU of gsm system; Use base station, the wireless digital repeater of the radio node layer (the second radio node layer) of non-paired frequency spectrum by 3GPP LTE TDD standard institute standard, perhaps RRU constitutes;
(2) in the heterogeneous hierarchical wireless access network; The radio node layer (the first radio node layer) that uses paired frequency spectrum is made up of the base station or the RRU of gsm system, and the radio node layer (the second radio node layer) that uses non-paired frequency spectrum is made up of radio node, the wireless digital repeater of WLAN standard institute standard;
(3) in the heterogeneous hierarchical wireless access network; The radio node layer (the first radio node layer) that uses paired frequency spectrum is made up of the base station or the RRU of gsm system, and the radio node layer (the second radio node layer) that uses non-paired frequency spectrum is made up of base station, wireless digital repeater or the RRU of WiMAX standard institute standard;
(4) in the heterogeneous hierarchical wireless access network; The radio node layer (the first radio node layer) that uses paired frequency spectrum is made up of the base station or the RRU of gsm system, and the radio node layer (the second radio node layer) that uses non-paired frequency spectrum is made up of base station, wireless digital repeater or the RRU of TD-SCDMA standard institute standard;
(5) in the heterogeneous hierarchical wireless access network; The radio node layer (the first radio node layer) that uses paired frequency spectrum is made up of the base station or the RRU of gsm system, and the radio node layer (the second radio node layer) that uses non-paired frequency spectrum is made up of base station, wireless digital repeater or the RRU of PHS standard institute standard;
(6) in the heterogeneous hierarchical wireless access network; The radio node layer that uses paired frequency spectrum is made up of the base station or the RRU of gsm system, and the radio node layer that uses non-paired frequency spectrum is made up of base station, wireless digital repeater or the RRU of WiMAX and these two standard institute standards of 3GPP LTE TDD;
(7) in the heterogeneous hierarchical wireless access network; The radio node layer that uses paired frequency spectrum is made up of the base station or the RRU of gsm system and 3GPP LTE FDD system, and the radio node layer that uses non-paired frequency spectrum is made up of base station, wireless digital repeater or the RRU of WiMAX and these two standard institute standards of 3GPP LTE TDD.
Frequency spectrum B in the present embodiment can be the licensed spectrum of any one section TDD system, also can use the frequency spectrum that is allocated to ground TV broadcast at present, comprises VHF:174MHz～230MHz, UHF:470MHz～798MHz, in a part.Frequency spectrum B also can be the licensed band of exempting from of WLAN use.
Need to prove that in addition in the present invention, the uplink business data transmission is meant the business datum that communication nodes such as wireless terminal, wireless repeater send to network through air interface; The downlink service data transmission is meant that network passes through the business datum that air interface is sent to communication nodes such as wireless terminal, wireless repeaters; The upload control transfer of data is meant the control data that communication nodes such as wireless terminal, wireless repeater send to network through air interface; It is said that the defeated network that is meant of following industry control passes through the control data that air interface is sent to communication nodes such as wireless terminal, wireless repeaters.Control data had both comprised the control signaling data, also comprised the radio environment measurements data.The upload control data comprise a kind of of following data at least: the dispatch request information data; Channel quality indication (CQI) information (Channel Quality Indication abbreviates CQI as) or channel status indication information data (Channel State Indication abbreviates CSI as); ACK/NACK (affirmation/non-affirmation) information data; PMI (Pre-coding MatrixIndex, pre-coding matrix index) information data inserts the solicited message data; Self-adapting modulation coding information (Adaptive Modulation and Coding abbreviates AMC as) data.Descending control data comprises a kind of of following data at least: the schedule information data (assigned resources position, coding transmission form etc.) of downlink service data transmission, the dispatch request permission indication information of uplink business data transmission, channel quality indication (CQI) information data or channel status indication information data; Automatic request retransmission information (Automatic Repeat Request abbreviates ARQ as), PMI (Pre-coding Matrix Index; Pre-coding matrix index) information data; The access information data that asks for permission, coding transmission form indication information data, power control data (Transmission Power Control; Abbreviate TPC as); The switching controls data, cell information broadcast data, cell synchronizing data.
Through above-mentioned at least one technical scheme of the present invention; Realized following beneficial effect: (1) is through introducing the professional duplex mode that is separated with control in the layering wireless access network; Make wireless access system both kept TDD channel reciprocity and on/flexibility of downlink business; Have the various advantages of the low feedback delay of FDD again concurrently, thereby improved dynamic property and throughput that TDD eats dishes without rice or wine; (2) with situation that layering wireless access planar network architecture and node scheduling technology combine under; Can make high-end frequency spectrum (such as; Near the 5GHz) go up with the Microcell radio node of TDD mode work and support high speed mobile terminal, thus expanded the range of application of high-end frequency spectrum; (3) method of work of heterogeneous hierarchical wireless access network is easy under existing frequency spectrum planning, realize; Can be compatible with the dual-mode of existing system, realize smooth evolution.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a heterogeneous hierarchical wireless access network system is characterized in that, comprising:
Use the first radio node layer of paired frequency spectrum, wherein, the said first radio node layer comprises first radio node of the paired frequency spectrum of one or more uses, wherein, said paired frequency spectrum comprise one be used for uplink frequency spectrum and be used for the frequency spectrum of downlink transfer;
Use the second radio node layer of non-paired frequency spectrum, the said second radio node layer comprises second radio node of the non-paired frequency spectrum of a plurality of uses, and wherein, said non-paired frequency spectrum is a frequency spectrum of supporting the uplink and downlink transmission means;
Resource management and duplexing control unit; Be used for said paired frequency spectrum and said non-paired frequency spectrum are managed and distributed; And control said first radio node and said second radio node with professional with control communicating by letter of the mixing duplex mode that is separated and wireless terminal; Wherein, Mix in the duplex mode with control is separated in said business: the said second radio node layer be used for time division duplex carry wireless terminal/downlink service data, the said first radio node layer is used for carrying and transmits the needed control data of said/downlink service data;
Scheduling controlling unit between node is used to adopt one of following mode through the said first radio node layer wireless terminal to be carried out dispatching between node:
Select optimum node from the said second radio node layer, and with the part or all of resource assignation of said optimum node give said wireless terminal and,
From said first radio node layer and the said second radio node layer, select optimum node, and give said wireless terminal the part or all of resource assignation of said optimum node;
Baseband processing unit, be used for to from and/or the signal that is sent to said first radio node and/or said second radio node carry out Base-Band Processing;
Said wireless terminal works on said first radio node and the employed frequency spectrum of said second radio node, is used for communicating with the heterogeneous hierarchical wireless access network.
2. system according to claim 1 is characterized in that, the scheduling controlling unit is through scheduling control signaling between the said first radio node layer transmission/receiving node, so that said wireless terminal is carried out dispatching between node between said node.
3. system according to claim 2 is characterized in that, the communication mode of said first radio node and wireless terminal is one of following mode:
The paired frequency spectrum that uses said first radio node to use divides duplex mode or Half-Frequency Division Duplex mode and said wireless terminal communications with full range;
Under the control of said resource management and duplexing control unit; The non-paired frequency spectrum that uses partial frequency spectrum and said second radio node in the paired frequency spectrum that said first radio node uses to use, with said business with control be separated mix duplex mode and said wireless terminal communications.
4. system according to claim 3 is characterized in that, the communication mode of said second radio node and wireless terminal is one of following mode:
The non-paired frequency spectrum that uses said second radio node to use is with time division duplex and said wireless terminal communications;
Under the control of said resource management and duplexing control unit; Use the partial frequency spectrum in the paired frequency spectrum that part or all of frequency spectrum and first radio node in the non-paired frequency spectrum that said second radio node uses use, with said business with control be separated mix duplex mode and said wireless terminal communications.
5. according to each described system in the claim 1 to 4, it is characterized in that, said baseband processing unit with the mode of distributed base station to from and/or the signal that is sent to said second radio node and/or said first radio node carry out Base-Band Processing.
6. according to each described system in the claim 1 to 4; It is characterized in that; Said first radio node is used for the covering of macrocell; Said second radio node is used for the covering of Microcell or macrocell, wherein, has one or more Microcells or one or more said second radio nodes that are used to cover said Microcell in the macrocell that said first radio node is covered; Perhaps, said first radio node macrocell that is covered and the said Microcell that is covered by one or more said second radio nodes overlaps.
7. according to each described system in the claim 1 to 4; It is characterized in that, said first radio node comprise following any: with the radio frequency unit of the base station that has Base-Band Processing of FDD mode work or with the remote radio unit (RRU) of the distributed base station of FDD mode work; Said second radio node comprise following any: with the radio frequency unit of the base station that has Base-Band Processing of time division duplex work, with the remote radio unit (RRU) of the distributed base station of time division duplex work, or with the wireless digital repeater of time division duplex work.
8. according to each described system in the claim 1 to 4; It is characterized in that said baseband processing unit and said resource management and duplexing control unit are present among the said heterogeneous hierarchical wireless access network system as same network element or as different network elements.
9. the implementation method of a heterogeneous hierarchical wireless access network; It is characterized in that; Said heterogeneous hierarchical wireless access network comprises first radio node layer that uses paired frequency spectrum and the second radio node layer that uses non-paired frequency spectrum; Said paired frequency spectrum comprise one be used for uplink frequency spectrum and be used for the frequency spectrum of downlink transfer, said non-paired frequency spectrum is a frequency spectrum of supporting the uplink and downlink transmission means, said method comprises:
Use the said second radio node layer with time division duplex carry wireless terminal on/downlink service data;
Use the said first radio node layer to carry to transmit said on/the needed control data of downlink service data;
Use the said first radio node layer that wireless terminal is carried out dispatching between node, wherein, one of following mode is adopted in scheduling between said node:
According to the signal quality of each node, select optimum node from the said second radio node layer, and with the part or all of resource assignation of said optimum node give said wireless terminal and,
According to the signal quality of each node, from said first radio node layer and the said second radio node layer, select optimum node, and give said wireless terminal the part or all of resource assignation of said optimum node.
10. method according to claim 9 is characterized in that, the load mode of said control data be following any:
Two frequency spectrums in the said paired frequency spectrum are all worked with the FDD mode, and the said frequency spectrum that is used for uplink carries upload control data, the said frequency spectrum bearing downlink control data that is used for downlink transfer;
Said frequency spectrum and the said non-paired frequency spectrum that is used for uplink in the said paired frequency spectrum worked with the FDD mode, and the said frequency spectrum that is used for uplink carries upload control data, said non-paired frequency spectrum bearer service data;
Said frequency spectrum and the said non-paired frequency spectrum that is used for downlink transfer in the said paired frequency spectrum worked with the FDD mode, the said frequency spectrum bearing downlink control data that is used for downlink transfer, said non-paired frequency spectrum bearer service data.
11. according to claim 9 or 10 described methods, it is characterized in that, said non-paired frequency spectrum be the combination of discontinuous a plurality of non-paired frequency spectrums on the frequency domain or on frequency domain continuous one section non-paired frequency spectrum.
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| CN101982995A (en) * | 2010-10-29 | 2011-03-02 | 华为技术有限公司 | Communication method, device and system |
| CN102546080B (en) * | 2010-12-21 | 2014-06-25 | 华为技术有限公司 | Downlink base-band signal generation method, related equipment and system |
| CN102547928B (en) | 2010-12-31 | 2015-04-15 | 华为技术有限公司 | Service node selective access method, device and system |
| CN102595630B (en) * | 2011-01-17 | 2016-04-13 | 北京邮电大学 | The hybrid access method shared based on part resource and system |
| CN102638805B (en) * | 2011-02-12 | 2016-10-05 | 华为技术有限公司 | A kind of promotion heterogeneous network disturbance coordination method and equipment |
| JP5893897B2 (en) * | 2011-11-11 | 2016-03-23 | 株式会社Ｎｔｔドコモ | User apparatus, base station apparatus, and wireless communication method |
| CN103826236B (en) * | 2014-02-27 | 2017-08-22 | 西安电子科技大学 | The heterogeneous hierarchical millimeter wave wireless local planar network architecture that control information is separated with business |
| PT3288326T (en) | 2015-10-22 | 2020-10-29 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Method of transmitting feedback information, terminal equipment and base station |
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