CN102118869B - System and method for data relay transmission - Google Patents
System and method for data relay transmission Download PDFInfo
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Abstract
A method for a base station to transmit data is provided in the invention. The data to be relayed by a relay station to user equipment, the method comprising: encoding, based on an identification of the relay station or an identification of the user equipment, control information that indicates resource allocation for the relay station; and transmitting the control information to the relay station.
Description
Technical field
The invention relates to the system and method for carrying out data relay transmission in communication system.
Background technology
In wireless telecommunications, base station (base station) directly or via relay station (relay station) can transmit data to user's equipment (user equipment).Base station can have the unit of band cell mark (cell identification), and in this element, user's equipment can receive data from base station.In some cases, relay station does not have independent cell mark and thus can not creating unit, but relay station can by the data relay that receives from base station to user's equipment.In addition, the method is still applicable when via node (Relay Node, RN) has cell mark, but has acellular mark to there is no absolute relation with via node.
Traditionally, base station can above transmission data and control information be to user's equipment at different communication channels (communication channel), and this control information instruction is used for resource (such as time or the frequency resource) distribution receiving these data for user's equipment.For example, according to Long Term Evolution (Long Term Evolution, LTE) standard, base station (is also called Node B (the Enhanced Node B of enhancing in LTE standard, eNB)) can by control information at physical down link control channel (Physical Downlink Control Channel, PDCCH) user's equipment is sent on, and data are sent to user's equipment in physical down link sharing channel (Physical Downlink Shared Channel, PDSCH).According to the control information received on PDCCH, user's equipment can determine the institute's Resources allocation receiving data on PDSCH.
Relay station to user's equipment, helps base station to transmit data to user's equipment by the data relay that will receive from base station.The data of wish relaying and control information can be sent to relay station by base station on different communication channels, and this control information instruction is used for the Resourse Distribute of the data receiving wish relaying for relay station.For example, according to LTE standard, control information can be sent to relay station (being also called via node (Relay Node, RN) in LTE standard) by base station on PDCCH, and the data for relaying are sent to relay station on PDSCH.According to the control information received on PDCCH, relay station can determine the institute's Resources allocation receiving data on PDSCH.
Fig. 1 is that a kind of base station communicating control information that makes of illustrating according to LTE standard is to the conventional method 100 of relay station or user's equipment.See Fig. 1, base station is to many down link control informations (Downlink Control Information, be referred to herein as DCI 102) each attached cyclic redundancy check (Cyclic Redundancy Check, CRC) parity check bit (parity bits).According to LTE standard, DCI 102 can have predetermined format separately.Then, base station can by DCI respectively precoding to multiple control channel element (Control Channel Element, CCE) 104.After physical treatment (such as chnnel coding), can according to such as OFDM (Orthogonal Frequency-Division Multiplexing, OFDM) technology, to map to CCE on PDCCH and to transmit in subframe (subframe) 106.
OFDM technology utilizes multiple closely alternate quadrature subcarrier (subcarrier) to carry out carry data.For example, data can be distributed on multiple parallel data channel (data channel), and each data channel is one of them subcarrier corresponding respectively.Each subcarrier of modulation is carried out with a relatively low symbol rate (symbol rate) by existing modulation schemes (such as quadrature amplitude modulation (quadrature amplitude modulation)).In addition, according to OFDM technology, can in the transmission end of OFDM communication system to being used for representing that the OFDM symbol of data performs fast Flourier inverse transform (Inverse Fast Fourier Transform, IFFT), and fast fourier transform (Fast Fourier Transform, FFT) can be performed to recover these OFDM symbol at the receiving terminal of OFDM communication system.
Still see Fig. 1, subframe 106 can comprise N1 OFDM symbol and N2 subcarrier, and this N1 OFDM symbol corresponds to a downlink time slots (downlink slot).Subframe 106 also can comprise resource block, and these resource block correspond respectively to N1 OFDM symbol and N3 subcarrier.Each resource element (k, l) in resource block is all corresponding to the time for transmitting data and frequency resource.
Fig. 2 is the blind interpretation method 200 of one tradition illustrated according to LTE standard, and blind interpretation method 200 is for making relay station or user's equipment (being referred to herein as receiver) from base station receiving control information.See Fig. 2, receiver receives the control information in CCE 202 form on PDCCH.Due to CCE 202 and the uncertainty for corresponding relation between the DCI that recovers, receiver can attempt the different length of candidate DCI (such as candidate DCI 204), such as length1, Length2 ... Deng.Receiver also carries out descrambling (descramble) to the CRC parity check bit of candidate DCI204.If the CRC parity check bit after descrambling 206 is by CRC check, then candidate DCI 204 is the DCI 208 be correctly restored.Otherwise receiver then can continue the different length of trial candidate DCI to carry out CRC check.
Summary of the invention
Of the present invention one implements example provides a kind of method for making a base station transmit data, above-mentioned data are for by relay station relays to user equipment, said method comprises: according to a mark of relay station or the mark of user's equipment, control information is encoded, the Resourse Distribute of above-mentioned control information instruction to relay station; And communicating control information is to relay station.
Described method, wherein, this control information is transmitted to this relay station in this base station on a physical downlink control channel, and the method also comprises:
A physical down link sharing channel transmits these data to this relay station.
Described method, wherein, also comprises:
According to this mark of this user's equipment, encode to control information, this control information is the Resourse Distribute of instruction to this user's equipment; And
Transmit instruction this control information to this Resourse Distribute of this user's equipment to this user's equipment.
Described method, wherein, this coding step also comprises:
According to a wireless network interim identification symbol of this relay station or the interim identification symbol of a wireless network of this user's equipment, this control information is encoded.
Of the present invention one implements example provides a kind of for making base station communicating control information to relay station with the method for relay data to user equipment, the method comprises: transmit a specific indication information to relay station, wherein packets of information is containing control information and a parameter, the Resourse Distribute of above-mentioned control information instruction to relay station, above-mentioned parameter then indicates control information to be for relay station.
Described method, wherein, also comprises:
Comprise one of this user's equipment to be identified in this information.
Of the present invention one implements example provides a kind of for making base station communicating control information to user equipment and a relay station with relay data to the method for user's equipment, the method comprises: according to control channel element (the Control Channel Element of one first number, CCE), instruction is encoded to the control information of the Resourse Distribute of relay station; And according to being different from the CCE of one second number of the first number, instruction is encoded to the control information of the Resourse Distribute of user's equipment.
Of the present invention one implements example provides a kind of and makes base station communicating control information to user equipment and a relay station with relay data to the method for user's equipment, the method comprises: with a mark of relay station, to one first many cyclic redundancy check (CRC) (Cyclic Redundancy Check, CRC) parity check bits of the control information of the Resourse Distribute of relay station, scrambling is carried out to instruction; And with a mark of user's equipment, to one second many CRC parity check bits of the control information of the Resourse Distribute of user's equipment, scrambling is carried out to instruction.
Described method, wherein, also comprises: with this mark of this user's equipment, carries out scrambling to this more than first cyclic redundancy check (CRC) parity check bit.
Of the present invention one implements example provides a kind of for making a relay station receive data and the method for relaying above-mentioned data to user equipment from a base station, the method comprises: from base station receiving control information, this control information be instruction centering continue station Resourse Distribute and encode according to a mark of one of relay station mark or user's equipment; And by control information decoding, to determine the resource distributing to relay station.
Described method, wherein, also comprises:
Described determined resource receives these data.
Described method, wherein, also comprises:
By the special signal from this base station, or by monitoring the information in this base station and this user's exchanged between equipment, obtain this mark of this user's equipment.
Described method, wherein, this relay station receives this control information on a physical downlink control channel, and the method also comprises:
A physical down link sharing channel receives this data from this base station.
Of the present invention one implements example provides a kind of for making a relay station from a base station receiving control information with the method for relay data to user equipment, the method comprises: receive a specific indication information from base station, wherein above-mentioned packets of information is containing control information and a parameter, the Resourse Distribute of above-mentioned control information instruction to relay station, above-mentioned parameter then indicates control information to be for relay station.
Described method, wherein, also comprises:
Receiving package is contained in a mark of this user's equipment in this information.
Of the present invention one implements example provides a kind of for making a relay station from the method for a base station receiving control information, wherein communicating control information is carried out according to the control channel element (CCE) of one first number in base station, the Resourse Distribute of this control information instruction to user's equipment, said method comprises: from base station receiving control information, the Resourse Distribute of this control information instruction to relay station; And according to being different from the CCE of one second number of the first number, by institute's receiving control information decoding.
Of the present invention one implements example provides a kind of for making a relay station from the method for a base station receiving control information, wherein base station carries out scrambling with one of user's equipment mark to one first many cyclic redundancy check (CRC) (CRC) parity check bits of control information, the Resourse Distribute of above-mentioned control information instruction to user's equipment, said method comprises: receive the control information of instruction to the Resourse Distribute of relay station from base station; And with a mark of relay station, descrambling is carried out to one second many CRC parity check bits of institute's receiving control information.
Described method, wherein, also comprises:
With this mark of this user's equipment, descrambling is carried out to this more than second cyclic redundancy check (CRC) parity check bit.
Of the present invention one implements example provides a kind of base station for transmitting data, above-mentioned data are for by relay station relays to user equipment, above-mentioned base station comprises: a processor, in order to the mark according to one of relay station mark or user's equipment, control information is encoded, the Resourse Distribute of above-mentioned control information instruction to relay station; And an antenna, in order to communicating control information to relay station.
Of the present invention one implements example provides a kind of for receiving data by the relay station of above-mentioned data relay to user equipment from a base station, this relay station comprises: an antenna, in order to from base station receiving control information, this control information be instruction centering continue station Resourse Distribute and encode according to a mark of relay station or a mark of user's equipment; And a processor, in order to by control information decoding, to determine the resource distributing to relay station.
Compared with prior art, Advantageous Effects of the present invention is:
The present invention accurately communicating control information and data to relay station, and then can complete relay transmission, solves relay station and cannot obtain control and the data message that preparation sends user's equipment to.
Should be understood that aforementioned general description and hereafter detailed description are all only exemplary and indicative explaination, but not for limiting the present invention.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
Fig. 1 be according to LTE standard illustrate a kind of for making base station communicating control information to the conventional method of relay station or user's equipment;
Fig. 2 be according to LTE standard illustrate a kind of for making relay station or user's equipment from the conventional method of base station receiving control information;
Fig. 3 is the calcspar of the communication system for data relay transmission illustrated according to an exemplary embodiment.
Fig. 4 be according to an exemplary embodiment illustrate a kind of for making base station transmit data to the flow chart of the method for relay station;
Fig. 5 be according to an exemplary embodiment illustrate for making relay station by the data relay that receives from base station to the relay transmission process of user's equipment;
Fig. 6 be according to an exemplary embodiment illustrate for making relay station by the data relay that receives from base station to the relay transmission process of user's equipment;
Fig. 7 be according to an exemplary embodiment illustrate for making relay station by the data relay that receives from base station to the relay transmission process of user's equipment;
Fig. 8 be according to an exemplary embodiment illustrate for making relay station by the data relay that receives from base station to the relay transmission process of user's equipment;
Fig. 9 be according to an exemplary embodiment illustrate for making relay station by the data relay that receives from base station to the relay transmission process of user's equipment;
Figure 10 be according to an exemplary embodiment illustrate for making base station communicating control information to the specific indication information of relay station;
Figure 11 be according to an exemplary embodiment illustrate a kind of for making base station communicating control information to the coding method of relay station and user's equipment;
Figure 12 be according to an exemplary embodiment illustrate for making base station communicating control information to the process of relay station and user's equipment;
Figure 13 be according to an exemplary embodiment illustrate a kind of for making base station communicating control information to the coding method of relay station and user's equipment;
Figure 14 be according to an exemplary embodiment illustrate for making base station communicating control information to the process of relay station and user's equipment;
Figure 15 is the calcspar of the base station illustrated according to an exemplary embodiment;
Figure 16 is the calcspar of the relay station illustrated according to an exemplary embodiment;
Figure 17 is the calcspar of the user's equipment illustrated according to an exemplary embodiment.
Wherein, Reference numeral:
100: make base station communicating control information to the conventional method of relay station or user's equipment
102,204,208,1402,1404, DCI: down link control information
104,202,1204,1206,1406,1408: control channel element
106: subframe
200: blind decoding method
206: cyclic redundancy check (CRC) parity check bit
300: communication system
302,502,602,702,802,902,1500: base station
304,504,604,704,804,904,1600: relay station
306,506,606,704,806,906: user's equipment
308: unit
310: communication device
400: transmit the method for data to relay station for making base station
402 ~ 406: described in one embodiment of the invention for making base station transmit data to each step of the method for relay station
500,600,700,800,900: relay transmission process
510,512,514,520,522,610,612,614,710,712,810,812,920,922: sub-frame formats
1000: the specific indication information of relay station
1100,1300: for making base station communicating control information to the coding method of relay station and user's equipment
1200: for making base station according to method 1100 communicating control information to the process of relay station and user's equipment
1202: control information
1302 ~ 1316: described in one embodiment of the invention for making base station communicating control information to each step of the coding method of relay station and user's equipment
1400: for making base station communicating control information to the process of relay station and user's equipment
1502,1602,1702: processor
1504,1604,1704: random access memory
1506,1606,1706: read-only memory
1508,1608,1708: holder
1510,1610,1710: database
1512,1612,1712:I/O device
1514,1614,1714: interface
1516,1616,1716: antenna
PDCCH: physical down link control channel
PDSCH: physical down link sharing channel
CRC: cyclic redundancy check (CRC)
Embodiment
Below will be described in detail with correspondence diagram with exemplary embodiment assistant.Referring to accompanying drawing in, except special instruction part, substantially different graphic in identical label all represent same or analogous element.Following to the explanation of exemplary embodiment of the present invention in mentioned embodiment do not represent according to all embodiments of the present invention.On the contrary, these embodiments are just according to the example of the system and method for the related aspect of inventing as described in appended claims.
Fig. 3 is the calcspar of the communication system 300 for data relay transmission illustrated according to an exemplary embodiment.Communication system 300 can in order to basis such as OFDM (Orthogonal Frequency-Division Multiplexing, OFDM) technology, code division multiple access (Code Division Multiple Access, CDMA) technology, multi-transceiver technology, multi-input multi export (Multiple-Input and Multiple-Output, MIMO) technology etc. and operate.
In exemplary embodiment, communication system 300 can in order to basis such as IEEE 802.16 standard family, third generation partnership project (the 3
rdgeneration Partnership Project, 3GPP) standard, high speed packet access (High-Speed Packet Access, HSPA) standard, Long Term Evolution (Long Term Evolution, LTE) the different communication standard such as standard, Inter Action communication (International Mobile Telecommunications-2000, IMT-2000) standard, IMT-advanced standard, IMT standard family operates.Only for illustration object, assuming that communication system 300 is in order to operate based on OFDM technology according to LTE standard.
In exemplary embodiment, communication system 300 can comprise at least one base station (base station, BS) 302 (are also called Node B (the Enhanced Node B of enhancing, eNB)), at least one relay station (Relay Station, RS) 304 (are also called via node (Relay Node, RN)) and at least one user's equipment (User Equipment, UE)) 306.RS 304 and UE 306 are in the unit 308 (i.e. the area of coverage) of BS 302.
In exemplary embodiment, communication system 300 can also comprise communication device 310, and this communication device 310 is connected to BS 302.Communication device 310 can comprise Mobility Management Entity (Mobility Management Entity, MME) and/or servo gateway (Serving Gateway, S-GW), for the communication in management and communication control system 300.Thus, UE 306 just can carry out communication with BS 302 and communication device 310, to receive such as LTE service.
In exemplary embodiment, BS 302 directly or can transmit data via RS 304 and receive data to UE 306 or from UE 306.For example, BS 302 can transmit data to RS 304, and then RS 304 can relay the data to UE 306.Again for example, UE 306 directly can receive data from BS 302, or receives data via RS 304 from BS 302, or receives data from BS 302 and RS 304 simultaneously.
In exemplary embodiment, data can be sent to UE 306 from control information by BS 302 on different communication channels, and the resource (such as time or frequency resource) that this control information instruction is used for receiving for UE 306 data is distributed.For example, control information can be sent to UE 306 by BS 302 in physical down link control channel (PDCCH), and data are sent to UE 306 in physical down link sharing channel (PDSCH).According to the control information received on PDCCH, UE 306 can determine the institute's Resources allocation in order to receive data on PDSCH.
In exemplary embodiment, the data for relaying to UE 306 can be sent to RS 304 from control information by BS 302 on different communication channels, and this control information is that instruction is for receiving the Resourse Distribute of data of institute's wish relaying for relay station 304.For example, control information can be sent to RS 304 by BS 302 on PDCCH, and the data for relaying are sent to RS 304 on PDSCH.According to the control information received on PDCCH, RS 304 can determine the institute's Resources allocation of data receiving institute's wish relaying on PDSCH.
In exemplary embodiment, RS 304 can relay the data to UE 306, and BS 302 can communicating control information to UE 306, this control information is that instruction receives by the Resourse Distribute of the data of RS 304 relayings for UE 306.For example, data can be relayed to UE 306 by RS 304 on PDSCH, and BS 302 can on PDCCH communicating control information to UE 306.According to the control information received on PDCCH, UE 306 can determine the institute's Resources allocation receiving data on PDSCH.In addition, BS 302 also can transmit data to UE 306 simultaneously on PDSCH.
In exemplary embodiment, RS 304 can in the up link of BS 302 or downlink band, according to time division multiplexing (Time Division Multiplex, TDM) technology or frequency division multiplexing (Frequency Division Multiplex, FDM) technology transfer or receive radio signals.In addition, RS 304 can serve as base station, and when not coordinating with BS 302 communicating control information and data to UE 306.
Fig. 4 is that the one illustrated according to an exemplary embodiment transmits the flow chart of data to the method 400 of RS 304 for making BS 302 (Fig. 3).For example, these data can be the data for relaying to UE 306 (Fig. 3).See Fig. 3 and Fig. 4, RS 304 is by the special signal from BS 302, or by monitoring the information exchanged between BS 302 and UE 306, obtain the mark of UE 306, interim identification symbol (Radio Network Temporary Identifier, RNTI) (402) of such as wireless network.For example, this special signal can comprise medium plan (Media Access Control, MAC) signal, radio link control (Radio Link Control, RLC) signal, radio resource control (Radio Resource Control, RRC) signal or non-access layer (Non-Access Stratum, NAS) information.Again for example, the information exchanged between BS 302 and UE 306 can comprise access request (Random Access Request, RAR) information in RAP or any other comprises the information of the information relevant with the mark of UE 306 (such as RNTI).Thus, namely RS 304 obtains the RNTI of UE 306.
BS 302 communicating control information on PDCCH, this control information instruction is used for the Resourse Distribute (404) receiving data for RS 304.In an exemplary embodiment, BS 302 encodes to control information according to the mark (such as RNTI) of RS 304.Correspondingly, RS 304 can use the RNTI of himself to carry out this control information of decoding, to determine the institute's Resources allocation receiving data.In an exemplary embodiment, BS 302 encodes to control information according to the RNTI of UE 306.Correspondingly, RS 304 can use the RNTI of obtained UE 306 to carry out this control information of decoding, to determine the institute's Resources allocation receiving data.
BS 302 also transmits data to RS 304 (406) on PDSCH.Thus, RS 304 just can receive data from BS 302 in determined resource.In some exemplary embodiment, communication system 300 can comprise multiple UE.Correspondingly, RS 304 can distinguish data PDSCH corresponding to each UE out of the ordinary.In addition, RS 304 such as can use beam forming (beam forming) technology or MIMO technology, for these UE perform advanced transmission.
In addition, RS 304 also can from BS 302 receiving control information, and this control information instruction relays the data to the Resourse Distribute of UE 306 for RS 304.For example, RS 304 can receive this control information on PDCCH or PDSCH.Again for example, RS 304 receives this control information by specific informations such as such as physical layer (physical layer, PHY) information, MAC information or the rrc messages between BS 302 and RS 304.After RS 304 receives the data for relaying to UE 306 and the control information for these data of relaying, RS 304 can relay the data to UE 306 in institute's Resources allocation.
Fig. 5 be according to an exemplary embodiment illustrate for making RS 504 by the data relay that receives from BS 502 to the relay transmission process 500 of UE 506.Only for illustration object, assuming that UE 506 comprises a UE UE1, the 2nd UE UE2 and the 3rd UE UE3.For example, BS 502, RS 504 and UE1 can be respectively BS 302, RS 304 and UE 306 (Fig. 3).
In exemplary embodiment, BS 502 uses the RNTI of RS 504 to encode to control information, and this control information instruction receives the Resourse Distribute (being referred to herein as RS-CI) of data for RS 504.BS 502, also in the subframe N based on sub-frame formats 510, PDCCH transmits RS-CI to RS 504, and on PDSCH, transmits data to RS 504.According to sub-frame formats 510, data on PDSCH comprise data (being called UE1 data, UE2 data and UE3 data in this article) for relaying to UE1, UE2 and UE3 and control information, and this control information instruction is for the Resourse Distribute (being called CI-1, CI-2 and CI-3 in this article) of RS 504 relaying UE1 data, UE2 data and UE3 data.By to receive and RS-CI, the RS 504 that decode can receive PDSCH, and thus receive UE1 data, UE2 data, UE3 data, CI-1, CI-2 and CI-3.
In an exemplary embodiment, BS 502, in the subframe N based on sub-frame formats 512, PDCCH transmits RS-CI to RS 504, and on PDSCH, transmits data to RS 504.Be gathered in the first private resource block on PDCCH or PDSCH according to sub-frame formats 512, CI-1, CI-2 and CI-3, UE1 data, UE2 data and UE3 data are then gathered in the second private resource block on PDSCH.
In an exemplary embodiment, BS 502, in the subframe N based on sub-frame formats 514, PDCCH transmits RS-CI to RS 504, and on PDSCH, transmits data to RS 504.Comprise UE1 data, UE2 data and UE3 data according to the data in sub-frame formats 514, PDSCH, CI-1, CI-2 and CI-3 then transmit on PDCCH.
In exemplary embodiment, in the subframe (such as subframe N+X) transmitted after subframe N, CI-1, CI-2 and CI-3 can be sent to UE1, UE2 and UE3 by BS 502 respectively, and RS 504 can in institute's Resources allocation relaying UE1 data, UE2 data and UE3 data, these Resources allocation are that CI-1, CI-2 and the CI-3 received in subframe N according to RS 504 determines.Thus, according to CI-1, CI-2 and CI-3 of receiving in subframe N+X, UE1, UE2 and UE3 can determine receiving the institute's Resources allocation by the UE1 data of RS504 institute relaying, UE2 data and UE3 data respectively.Fig. 5 shows the example sub-frame formats 520 and 522 of subframe N+X.
Fig. 6 be according to an exemplary embodiment illustrate for making RS 604 by the data relay that receives from BS 602 to the relay transmission process 600 of UE 606.Only for illustration object, assuming that UE 606 comprises a UE UE1, the 2nd UE UE2 and the 3rd UE UE3.For example, BS 602, RS 604 and UE1 can be respectively BS 302, RS 304 and UE 306 (Fig. 3).
In exemplary embodiment, BS 602 uses UE1, UE2 and UE3 RNTI separately to encode to control information, this control information instruction receives the Resourse Distribute of the data relevant to UE1, UE2 and UE3 for RS 604, in this article, this control information is called as UE1-CI, UE2-CI and UE3-CI respectively.BS 602, also in the subframe N based on sub-frame formats 610, PDCCH transmits UE1-CI, UE2-CI and UE3-CI to RS 604, and on PDSCH, transmits data to RS 604.According to sub-frame formats 610, data on PDSCH comprise data (being called UE1 data, UE2 data and UE3 data in this article) for relaying to UE1, UE2 and UE3 and control information, and this control information instruction is for the Resourse Distribute (being called CI-1, CI-2 and CI-3 in this article) of RS 604 relaying UE1 data, UE2 data and UE3 data.By receiving and decode UE-CI, UE2-CI and UE3-CI, RS 604 can receive PDSCH, and thus receives UE1 data, UE2 data, UE3 data, CI-1, CI-2 and CI-3.
In an exemplary embodiment, BS 602, in the subframe N based on sub-frame formats 612, PDCCH transmits UE1-CI, UE2-CI and UE3-CI to RS 604, and on PDSCH, transmits data to RS604.Be gathered in the private resource block on PDSCH according to sub-frame formats 612, CI-1, CI-2 and CI-3.
In an exemplary embodiment, BS 602, in the subframe N based on sub-frame formats 614, PDCCH transmits UE1-CI, UE2-CI and UE3-CI to RS 604, and on PDSCH, transmits data to RS604.Comprise UE1 data, UE2 data and UE3 data according to the data in sub-frame formats 614, PDSCH, CI-1, CI-2 and CI-3 then transmit on PDCCH.
Be similar to mentioned above, in the subframe (such as subframe N+X (scheming not shown)) transmitted after subframe N, BS 602 can transmit CI-1, CI-2 and CI-3 to UE1, UE2 and UE3 respectively on PDCCH, and RS 604 can transmit UE1 data, UE2 data and UE3 data respectively to UE1, UE2 and UE3 on PDSCH.Thus, UE1, UE2 and UE3 just can receive by the data of RS 604 relaying.
Fig. 7 be according to an exemplary embodiment illustrate for making RS 704 by the data relay that receives from BS 702 to the relay transmission process 700 of UE 706.Only for illustration object, assuming that UE 706 comprises a UE UE1, the 2nd UE UE2 and the 3rd UE UE3.For example, BS 702, RS 704 and UE1 can be respectively BS 302, RS 304 and UE 306 (Fig. 3).
In exemplary embodiment, in the subframe N based on sub-frame formats 710 or 712, BS 702 transmits (namely transmitting in different frequency bands or different resource block) respectively for relaying to data (being called UE1 data, UE2 data and UE3 data in this article) and the control information of UE1, UE2 and UE3, and this control information instruction is for the Resourse Distribute (being called CI-1, CI-2 and CI-3 in this article) of RS 704 relaying UE1 data, UE2 data and UE3 data.
In exemplary embodiment, BS 702 uses the RNTI of RS 704 to encode to control information, and this control information instruction receives the Resourse Distribute (being referred to herein as RS-CI) of CI-1, CI-2 and CI-3 for RS 704.BS 702 also transmits RS-CI to RS 704 on PDCCH, and on PDSCH, transmit CI-1, CI-2 and CI-3 to RS 704.
In an exemplary embodiment, according to sub-frame formats 710, BS 702 uses UE1, UE2 and UE3 RNTI separately to encode to control information, and this control information instruction receives the Resourse Distribute of UE1 data, UE2 data and UE3 data for RS 704 and is called UE1-CI, UE2-CI and UE3-CI in this article.BS 702 also transmits UE1-CI, UE2-CI and UE3-CI to RS 704 on PDCCH, and on PDSCH, transmits UE1 data, UE2 data and UE3 data to RS 704.
In an exemplary embodiment, use the RNTI of RS to encode to control information according to sub-frame formats 712, BS 702, this control information instruction receives the Resourse Distribute of UE1 data, UE2 data and UE3 data for RS 704 and is also called as RS-CI in this article.BS 702 also transmits RS-CI to RS 704 on PDCCH, and on PDSCH, transmits UE1 data, UE2 data and UE3 data to RS 704.
Be similar to mentioned above, in the subframe (such as subframe N+X (scheming not shown)) transmitted after subframe N, BS 702 can transmit CI-1, CI-2 and CI-3 to UE1, UE2 and UE3 respectively on PDCCH, and RS 704 can transmit UE1 data, UE2 data and UE3 data respectively to UE1, UE2 and UE3 on PDSCH.Thus, UE1, UE2 and UE3 just can receive by the data of RS 704 relaying.
Fig. 8 be according to an exemplary embodiment illustrate for making RS 804 by the data relay that receives from BS 802 to the relay transmission process 800 of UE 806.Only for illustration object, assuming that UE 806 comprises a UE UE1, the 2nd UE UE2 and the 3rd UE UE3.For example, BS 802, RS 804 and UE1 can be respectively BS 302, RS 304 and UE 306 (Fig. 3).
In exemplary embodiment, in subframe N, BS 802 transmits data to UE1, UE2 and UE3 (being called UE1 data, UE2 data and UE3 data in this article) on PDSCH.BS 802 also receives the Resourse Distribute of UE1 data, UE2 data and UE3 data for UE1, UE2 and UE3 control information (being called as CI-1 ', CI-2 ' and CI-3 ' respectively in this article) to instruction is encoded, and on PDCCH, transmit CI-1 ', CI-2 ' and CI-3 '.
As described above, RS 804, by the special signal from BS 802 or by monitoring in BS 802 and the information that exchanges between each UE1, UE2 and UE3, obtains the RNTI of UE1, UE2 and UE3.Thus, while BS 802 transmits data and control information to UE1, UE2 and UE3, RS 804 also can receive UE1 data, UE2 data and UE3 data according to the RNTI of UE1, UE2 and UE3 respectively.
In exemplary embodiment, UE1, UE2 and UE3 may not correctly receive the data transmitted in subframe N, and therefore ask BS 802 to retransmit this data.Correspondingly, in subframe M, BS 802 is to RS 804 communicating control information, and this control information instruction is for the Resourse Distribute (being called CI-1, CI-2 and CI-3 in this article) of RS 804 relaying UE1 data, UE2 data and UE3 data.Should be understood that and also can transmit subframe M before transmission subframe N.
In an exemplary embodiment, use the RNTI of RS 804 to encode to control information according to sub-frame formats 810, BS 802, this control information instruction receives the Resourse Distribute (being referred to herein as RS-CI) of CI-1, CI-2 and CI-3 for RS 804.BS 802 also transmits RS-CI to RS 804 on PDCCH, and on PDCCH or PDSCH, transmit CI-1, CI-2 and CI-3 to RS 804.In an exemplary embodiment, directly on PDCCH, transmit CI-1, CI-2 and CI-3 to RS 804 according to sub-frame formats 812, BS 802.
Be similar to mentioned above, in the subframe (such as subframe N+X (scheming not shown)) transmitted after subframe N, BS 802 can transmit CI-1, CI-2 and CI-3 to UE1, UE2 and UE3 respectively on PDCCH, and RS 804 can transmit UE1 data, UE2 data and UE3 data respectively to UE1, UE2 and UE3 on PDSCH.Thus, UE1, UE2 and UE3 just can receive the data retransmitted by RS 804.
Fig. 9 be according to an exemplary embodiment illustrate for making RS 904 by the data relay that receives from BS 902 to the relay transmission process 900 of UE 906.Only for illustration object, assuming that UE 906 comprises a UE UE1, the 2nd UE UE2 and the 3rd UE UE3.For example, BS 902, RS 904 and UE1 can be respectively BS 302, RS 304 and UE 306 (Fig. 3).
In exemplary embodiment, be similar to above described in composition graphs 5 to Fig. 8, in subframe N, data (being called UE1 data, UE2 data and UE3 data in this article) for relaying to UE1, UE2 and UE3 and control information are sent to RS 904 by BS 902, and this control information instruction is used for the Resourse Distribute (being called CI-1, CI-2 and CI-3 in this article) of relaying UE1 data, UE2 data and UE3 data.
In exemplary embodiment, in the subframe (such as subframe N+X) transmitted after subframe N, BS902 can transmit CI-1, CI-2 and CI-3 to UE1, UE2 and UE3 respectively on PDCCH.In addition, BS 902 and RS904 can transmit UE1 data, UE2 data and UE3 data respectively to UE1, UE2 and UE3 simultaneously on PDSCH.Thus, UE1, UE2 and UE3 just can receive data from BS 902 and RS 904 simultaneously.Fig. 9 shows the example sub-frame formats 920 and 922 of subframe N+X.
In exemplary embodiment, BS can transmit instruction to the control information of the Resourse Distribute of RS and the control information of instruction to the Resourse Distribute of UE in same resource block.For the control information preventing UE from receiving RS improperly, BS can carry out communicating control information according to the specific indication information of RS or corresponding to the coding method of blind decoding.
Figure 10 be according to an exemplary embodiment illustrate for making BS communicating control information to the specific indication information 1000 of RS of RS.Can comprise following parameter one of them or many persons see the specific indication information of Figure 10, RS 1000: Format Type, it indicates this information 1000 to be for RS; UE identification accords with, the UE of its specified data for being relayed to, and is such as the RNTI of UE, Logic Channel Identifier (Logical Channel Identification, LCID) or online ID; Subframe index, its instruction is used for the subframe of relay transmission; Resource block (Resource Block, RB) assigns, and its indexed resource distributes; Modulation and encoding scheme (Modulation and Coding Scheme, MCS), its instruction institute for use MCS; Redundancy versions (redundancy version); New data indicator, it supplies for mixing automatic request (Hybrid Automatic Request, HARQ) process; Transmitting power control (Transmission Power Control, TPC) for data is ordered; Index (preamble index) above; And other parameter shown in Figure 10.These other parameters are well-known in the art, therefore repeat no more.
In exemplary embodiment, the specific indication information 1000 of RS can be contained in MAC header, control element, information, RLC information or rrc message.
Figure 11 be according to an exemplary embodiment illustrate a kind of for making BS communicating control information to the coding method 1100 of RS and UE.As described above, the control information in many down link control information (Downlink Control Information, DCI) forms can be encoding in multiple control channel element by BS.If the DCI being used for RS is encoding in the CCE of the first number by BS, and be encoding to by the DCI being used for UE in the CCE of the second number being different from the first number, then UE may not correctly decode for the DCI of RS, and only has RS can correctly decode for the DCI of RS.
More specifically, as shown in figure 11, the DCI for RS can be encoded in the CCE of different number from the DCI for UE.For example, the DCI for UE can be encoded in 1/2/4/8 CCE, and can be encoded in 3/5/6/7 CCE for the DCI of RS.Therefore, the DCI for RS can transmit with the DCI for UE on such as PDCCH in same resource block, and UE may not correctly decode for the DCI of RS.Figure 11 also shows the exemplary parameter value of the CCE corresponding to different number, the such as number of PDCCH length type, resource element group and the number of PDCCH position.These parameters are well-known in the art, therefore repeat no more.
In exemplary embodiment, if the DCI for RS transmits in different subframes or different resource block from the DCI for UE, then these DCI also can be encoded in the CCE (such as 2 CCE) of identical number.
Figure 12 be according to an exemplary embodiment illustrate for making BS according to method 1100 (Figure 11) communicating control information to the process 1200 of RS and UE.For example, BS transmits the control information 1202 identical with the DCI being attached with cyclic redundancy check (CRC) (CRC) parity check bit.
See Figure 12, DCI 1202 is encoding in the CCE 1204 (such as 4 CCE) of the first number and is sent to UE in subframe K by BS, and is encoding to by DCI 1202 in the CCE 1206 (such as 3 CCE) of the second number and is sent to RS in subframe N.On UE end, UE can, according to the CCE being assigned to the different numbers that UE uses, use blind interpretation method 200 (Fig. 2) to carry out decoding CCE 1204.On RS end, RS also can, according to the CCE being assigned to the different numbers that RS uses, use blind interpretation method 200 (Fig. 2) to carry out decoding CCE 1206.Thus, UE and RS just can decode CCE 1204 and CCE 1206 respectively, and after CRC, receive DCI 1202.In exemplary embodiment, BS also can transmit CCE 1204 and CCE 1206 in same subframe.
Figure 13 be according to an exemplary embodiment illustrate a kind of for making BS communicating control information to the coding method 1300 of RS and UE.See Figure 13, BS, CRC parity check bit (1302) is added to DCI, and judge whether this DCI will be sent to RS (1304).If BS judges that RS is delivered in this DCI not tendency to develop but UE (1304-"No") is delivered in tendency to develop, then BS uses the mark (RNTI of such as UE) of UE to carry out scrambling (1306) to CRC parity check bit, and also performs chnnel coding to produce coded signal (1308) to DCI.When UE receives the DCI had through the CRC parity check bit of scrambling, UE successfully receives DCI by using the RNTI of himself to carry out descrambling to CRC parity check bit.
And if BS judges that RS (1304-"Yes") is delivered in this DCI tendency to develop, then BS uses the mark (RNTI of such as RS) of RS to carry out scrambling (1310) to CRC parity check bit.BS also judges whether this DCI indicates the Resourse Distribute (1312) for relaying the data to UE.If BS judges that DCI is the Resourse Distribute (1312-"Yes") of instruction for relaying the data to UE, then BS also uses the RNTI of UE to carry out scrambling (1314) to CRC parity check bit.Otherwise (1312-"No"), then BS performs chnnel coding to DCI, to produce coded signal (1308).BS also can perform rate-matched (1316) to these coded signals.When RS receives the DCI had through the CRC parity check bit of scrambling, RS successfully receives DCI by using the RNTI of RNTI and/or UE of himself to carry out descrambling to CRC parity check bit.
Figure 14 be according to an exemplary embodiment illustrate for making BS communicating control information to the process 1400 of RS and UE.For example, the control information being used for UE can transmit as the DCI 1402 being attached with CRC parity check bit by BS, and the control information being used for RS is transmitted as the DCI 1404 being attached with CRC parity check bit.
See Figure 14, BS, DCI 1402 is encoding to for being sent to UE in some CCE 1406 (such as 4 CCE), and DCI 1404 is encoding in the CCE 1408 (i.e. 4 CCE) of identical number for being sent to RS.BS also transmits CCE 1406 and CCE 1408 in different frequency resource.On UE end, UE can use blind interpretation method 200 (Fig. 2) to carry out decoding CCE 1406, and on RS end, RS also can use blind interpretation method 200 (Fig. 2) to carry out decoding CCE 1408.Thus, UE and RS just can decode CCE 1406 and CCE 1408 respectively, and after CRC, receive DCI 1402 and DCI1404.
In an exemplary embodiment, BS transmits CCE 1406 and CCE 1408 in same subframe N.As Figure 13 explain, because BS can use the CRC parity check bit of UE and RS RNTI separately to UE and RS to carry out scrambling, thus UE and RS can distinguish correctly decode CCE 1406 and CCE 1408.
Figure 15 is the calcspar of the base station 1500 illustrated according to an exemplary embodiment.For example, BS1500 can be the arbitrary base station above described in Fig. 3 to Figure 14.Following element one of them or many persons can be comprised: processor 1502, in order to moving calculation machine program command, to perform various handling procedure and method see Figure 15, BS 1500; Random access memory (Random Access Memory, RAM) 1504 and read-only memory (Read Only Memory, ROM) 1506, in order to access and storing information and computer program instructions; Holder 1508, in order to storage data and information; Database 1510, in order to store table, list or other data structure; I/O device 1512; Interface 1514; Antenna 1516 etc.These elements each is wherein well-known all in the art, therefore repeats no more.
Figure 16 is the calcspar of the RS 1600 illustrated according to an exemplary embodiment.For example, RS 1600 can be the arbitrary relay station above described in Fig. 3 to Figure 14.Following element one of them or many persons can be comprised: processor 1602, in order to moving calculation machine program command, to perform various handling procedure and method see Figure 16, RS 1600; Random access memory (RAM) 1604 and read-only memory (ROM) 1606, in order to access and storing information and computer program instructions; Holder 1608, in order to storage data and information; Database 1610, in order to store table, list or other data structure; I/O device 1612; Interface 1614; Antenna 1616 etc.These elements each is wherein well-known all in the art, therefore repeats no more.
Figure 17 is the calcspar of the UE 1700 illustrated according to an exemplary embodiment.For example, UE1700 can be the arbitrary user's equipment above described in Fig. 3 to Figure 14.Following element one of them or many persons can be comprised: processor 1702, in order to moving calculation machine program command, to perform various handling procedure and method see Figure 17, UE 1700; Random access memory (RAM) 1704 and read-only memory (ROM) 1706, in order to access and storing information and computer program instructions; Holder 1708, in order to storage data and information; Database 1710, in order to store table, list or other data structure; I/O device 1712; Interface 1714; Antenna 1716 etc.These elements each is wherein well-known all in the art, therefore repeats no more.
Although be set forth each embodiment according to LTE standard above, but the present invention is not limited only to this.On an equal basis effectively can also implement the present invention by other communication standard.
Although be set forth each embodiment according to downlink transmission (such as from BS to RS or the transfer of data to UE) above, but the present invention is not limited only to this.Also ul transmissions (such as from UE to BS or the transfer of data to RS) can be used effectively to implement the present invention on an equal basis.
By reading the embodiment disclosed by this specification and practice herein, other embodiments of the invention will be apparent for those who familiarize themselves with the technology.Scope of the present invention be intended to contain follow General Principle of the present invention and the present invention is made any change, use or amendment, these are changed, use or amendment can comprise the place different from the present invention belonging to the existing or usual practice in technique.This specification and each example are intended to only to be regarded as exemplary, and true scope of the present invention and spirit should be represented by hereafter claim.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention; anyly have the knack of this those skilled in the art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying claim person of defining.
Claims (18)
1., for making a base station transmit the methods of data, these data are for by relay station relays to user equipment, and it is characterized in that, the method comprises:
According to a mark of this relay station, control information is encoded, the Resourse Distribute of this control information instruction to this relay station; And
This control information transmitted after this control information after coding, the mark of this user's equipment and instruction coding is to this relay station for the parameter of this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
2. method according to claim 1, is characterized in that, this control information is transmitted to this relay station in this base station on a physical downlink control channel, and the method also comprises:
A physical down link sharing channel transmits these data to this relay station.
3. method according to claim 1, is characterized in that, also comprises:
According to this mark of this user's equipment, encode to control information, this control information is the Resourse Distribute of instruction to this user's equipment; And
Transmit instruction this control information to this Resourse Distribute of this user's equipment to this user's equipment.
4. method according to claim 1, is characterized in that, this coding step also comprises:
According to a wireless network interim identification symbol of this relay station or the interim identification symbol of a wireless network of this user's equipment, this control information is encoded.
5., for making base station communicating control information to relay station with a method for relay data to user equipment, it is characterized in that, comprise:
Transmit a specific indication information to this relay station,
Wherein this specific indication information comprises control information, the mark of this user's equipment and a parameter, the Resourse Distribute of this control information instruction to this relay station, and this parameter then indicates this control information to be for this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
6., for making base station communicating control information to user equipment and a relay station with relay data to a method for this user's equipment, it is characterized in that, the method comprises:
According to the control channel element of one first number, instruction is encoded to the control information of the Resourse Distribute of this relay station; And
According to the control channel element of one second number being different from this first number, instruction is encoded to the control information of the Resourse Distribute of this user's equipment;
This control information transmitted after this control information after coding, the mark of this user's equipment and instruction coding is to this relay station for the parameter of this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
7. make base station communicating control information to user equipment and a relay station with relay data to a method for this user's equipment, it is characterized in that, comprising:
With a mark of this relay station, to one first many cyclic redundancy check (CRC) parity check bits of the control information of the Resourse Distribute of this relay station, scrambling is carried out to instruction; And
With a mark of this user's equipment, to one second many cyclic redundancy check (CRC) parity check bits of the control information of the Resourse Distribute of this user's equipment, scrambling is carried out to instruction;
This control information transmitted after this control information after coding, the mark of this user's equipment and instruction coding is to this relay station for the parameter of this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
8. method according to claim 7, is characterized in that, also comprises: with this mark of this user's equipment, carries out scrambling to this more than first cyclic redundancy check (CRC) parity check bit.
9., for making a relay station receive data and a method for these data to one of relaying user equipment from a base station, it is characterized in that, comprise:
This control information after the mark of this base station receiving control information, this user's equipment and instruction coding is the parameter for this relay station, and this control information indicates the Resourse Distribute of this relay station and encodes according to a mark of this relay station; And
By this control information decoding received, to determine the resource distributing to this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
10. method according to claim 9, is characterized in that, also comprises:
Described determined resource receives these data.
11. methods according to claim 9, is characterized in that, also comprise:
By the special signal from this base station, or by monitoring the information in this base station and this user's exchanged between equipment, obtain this mark of this user's equipment.
12. methods according to claim 9, is characterized in that, this relay station receives this control information on a physical downlink control channel, and the method also comprises:
A physical down link sharing channel receives this data from this base station.
13. 1 kinds for making a relay station from a base station receiving control information with the method for relay data to user equipment, it is characterized in that, the method comprises:
A specific indication information is received from this base station,
Wherein this specific indication information comprises control information, the mark of this user's equipment and a parameter, the Resourse Distribute of this control information instruction to this relay station, and this parameter then indicates this control information to be for this relay station;
Wherein, this control information is transmitted to this relay station;
The method makes relay station obtain the control information preparing and send user's equipment to.
14. 1 kinds for making a relay station from the method for a base station receiving control information, wherein communicating control information is carried out according to the control channel element of one first number in this base station, the Resourse Distribute of this control information instruction to user's equipment, it is characterized in that, the method comprises:
This control information after the mark and instruction coding of this base station receiving control information, this user's equipment is the parameter for this relay station, the Resourse Distribute of this control information instruction to this relay station; And
According to the control channel element of one second number being different from this first number, by this receiving control information decoding;
The method makes relay station obtain the control information preparing and send user's equipment to.
15. 1 kinds for making a relay station from the method for a base station receiving control information, wherein this base station carries out scrambling with one of user's equipment mark to one first many cyclic redundancy check (CRC) parity check bits of control information, the Resourse Distribute of this control information instruction to this user's equipment, it is characterized in that, the method comprises:
This control information after the reception instruction of this base station is encoded to the control information of the Resourse Distribute of this relay station, the mark of this user's equipment and instruction is the parameter for this relay station; And
With a mark of this relay station, descrambling is carried out to one second many cyclic redundancy check (CRC) parity check bits of this receiving control information;
The method makes relay station obtain the control information preparing and send user's equipment to.
16. methods according to claim 15, is characterized in that, also comprise:
With this mark of this user's equipment, descrambling is carried out to this more than second cyclic redundancy check (CRC) parity check bit.
17. 1 kinds for transmitting the base station of data, these data are for by relay station relays to user equipment, and it is characterized in that, this base station comprises:
One processor, in order to the mark according to this relay station, encodes to control information, the Resourse Distribute of this control information instruction to this relay station; And
One antenna is to this relay station for the parameter of this relay station in order to this control information after the mark of this control information after transmitting coding, this user's equipment and instruction coding;
This relay station obtains the control information that preparation sends user's equipment to.
18. 1 kinds for receiving data by the relay station of this data relay to one user equipment, it is characterized in that from a base station, this relay station comprises:
One antenna, in order to the parameter that this control information after the mark of this base station receiving control information, this user's equipment and instruction coding is for this relay station, this control information indicates the Resourse Distribute of this relay station and encodes according to a mark of this relay station; And
One processor, in order to by this control information decoding, to determine the resource distributing to this relay station; This relay station obtains the control information that preparation sends user's equipment to.
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| US29223510P | 2010-01-05 | 2010-01-05 | |
| US61/292,235 | 2010-01-05 | ||
| US12/914,208 US9300393B2 (en) | 2010-01-05 | 2010-10-28 | Systems and methods for data relay transmission |
| US12/914,208 | 2010-10-28 |
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| CN103139922B (en) * | 2011-11-25 | 2015-05-13 | 华为技术有限公司 | Method, device and system for transmitting and receiving control channel information |
| CN105792368B (en) * | 2016-02-26 | 2019-08-23 | 上海华为技术有限公司 | A kind of method, relevant device and system controlling information processing |
| CN110166411B (en) * | 2018-02-13 | 2022-05-06 | 华为技术有限公司 | Data transmission method, device and network node |
| CN112088556B (en) * | 2018-05-11 | 2022-01-04 | Oppo广东移动通信有限公司 | Signal transmission method, relay equipment and network equipment |
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