TW200816754A - Method and arrangement for link adaption signalling in a wireless communication network - Google Patents

Abstract

Mobile station (UE), base station (BS) and method for method for link adaptation signalling in a wireless communication network comprising at least one transmitter and at least one receiver including the steps of determining channel quality parameters at the receiver; based on the channel quality parameters determined, allocate radio resources for at least one user in the wireless communication network, select coding and modulation type from the available coding modulation candidates for user data to fully fill the allocated radio resource, inform the receiver about the modulation mode used on user data, further inform the receiver about the size of a source data packet before coding of the user data and code and modulate said user data according to the coding and modulation candidates selected.

Description

200816754 IX. INSTRUCTIONS: FIELD OF THE INVENTION The present invention relates generally to a communication network and a link adaptive signal design that supports continuous code rate adaptation, which is also suitable for a packet center protocol. [Prior Art] Increasing quality of data rates and radio links and mobile use in high-speed versions of wireless communication networks (such as WiMAX) or 3G mobile networks (such as HSPDA (High Speed Data Access)) The number of changes in a cell must conform to an appropriate coding scheme in order to minimize interference between users while allocating a bandwidth suitable for each user on the radio link. The need for strong coding and modulation schemes in 3GPP-LTE (3D-generation partnership project long-term, evolution) is even more pronounced. One of the known concepts in 3 pp_LTE is the use of OFDM technology (Orthogonal Frequency Division Multiplexing) for downlink channels. 〇FDM allows the transmission bandwidth to be divided into closely spaced S-sub-waves, where each user Data can be transmitted on - or more of these subcarriers. The OFDM scheme also allows FDA (step adaptive) strategies to improve user throughput and coverage. FDA is related to scheduling, power allocation (pA) and keys. One of the concepts of Road Adaptability (LA), where 'schedule involves trying to find the radio resource to be used for power allocation among the users to be servoed. Further, the (PA) power allocation process is performed by the user. The available transmit power is more efficiently allocated among the sub-singles assigned to a user in the system to improve system performance during transmission. Finally, the link adaptation process is based on the reported channel quality (cq) 121586.doc 200816754 Choosing the appropriate coding and modulation spheres, which can be expressed by the (SINR) signal to the interference and noise ratio. Theoretically, an FDA can be used, and all three parameters in the 联合 are best combined.

However, due to the number of factors that must be considered at the same time, whether this complex algorithm is practical or not is suspicious. The more current optimization strategy is expected to be #〆 mercury% for the total transmission power and QoS (quality of service) of all users, about 4 m | . u Optimize these three parameters. / In the case of LAs in known communication systems, a discrete code rate and a number of modulation schemes are used. In general, such discrete code rates in existing wireless communication systems are used by _ 稽田知疋;f indicating several code rate candidates in the standard. Along with the modulation candidates, there are a limited number of modulation and code scheme (MCS) candidates in the system. For example, in the simple month of the coffee p8G2.i6e/m2, the regional disk will be the regional network part 16: for the fixed and action of the physical and media access control layer for the combination (4) and the subscription operation in the licensed band The wireless standard service pair described in the Air Interface of the Broadband Line Access System is specified for CTC (Swivel Turbo Code) and QPSK (Fourth Order Phase Shift Keying, i 6Q Shi (i 6th Order Quadrature Amplitude Modulation) With 64QAM (64-order quadrature amplitude modulation), the code rates are 1/2, 2/3, 3/4, and 5/6. The high-speed version of the UMTS standard (HSDpA (High Speed Packet Access)) provides more MCS options. It also covers different numbers of N-days and is in a finer code rate granularity. If Yi Yi Shi - τ A ^ is deducted first, LA is based on channel quality (CQ) feedback from the total MCS candidate selection. Modulation mode and code rate. In the existing system, in order to obtain link adaptation information in the receiver, 121586.doc 200816754 has covered the coded and modulated block size by scheduling signals (as shown in Figure 1). , the source block size is not explicitly given by the signal. —

WiMAX introduces these (10) indices into the link adaptation signal. In HSDPA, the round-trip block size can be calculated based on the combined index of the number of residual bits in the TFRI (Transport Format Resource Index), such as the 3GPP Ts 25·321 media storage in December 2004. The control (10)c) is defined by the protocol specification π(ν5·10·0). The packet size expressed as the MAC PDU (Media Access Control Packet Data Unit) size is different for different services and may even change with time. Using the packet to accurately fill the allocated resource (i.e., the transport block) 'requires additional padding bits (typically zero bits) to be padded to the transport block before the channel encoder to compensate for the discrete code Rate ^ However, the number of padding bits in the transport block is not covered by the physical layer signal. In the case of f, the transmitter must receive the signal by the higher layer signal (ie, through the MAC layer # number). Notifies the MAC pDU size. The issues described in this section apply not only to 3Gpp_LTE (3rd Generation Partnership Project - Long Term Evolution), but also to flexible bandwidth allocation and scheduler (eg WiMAX and WINNER). Any other broadband system 'in which WINNER D2.10 0.81 in December 2005, the final report of the identified magic key technology, system concept and its evaluation" (IST-2003-50758 1) is more detailed Description WINNER. According to the 3GPP-LTE case, the system can operate in an extremely flexible bandwidth from MHz 〇 2 〇 MHz and schedule a user to any size of radio resources, thus almost the size of the coded block. Does not exist 121586.doc 200816754 Limits the requirement that there is no packet size for possible services, which means there is no limit on the size of the transport block. Γ However, in order to maintain the same Mcs granularity as the granularity in HSDPA, there will be Too many MCS candidates. If it is decided to keep only a few Mcs candidates (such as Wl]V [in the case of AX), the number of bits to be filled due to the adaptation of the transmission block to the MAC PDU is caused by the number of bits. MCS granularity limits throughput performance, especially in cellular systems. In addition, the padding bits do not provide any coding gain, which is a waste of extra redundant bits. 'The signal to the link adaptation information is The information of the transmission block size and the MAC PDU size is composed so that the padding bits in the disassembling entity can be removed in the receiver end. In the existing system, the link adaptability is used to determine The number of padding bits added to the transport block and the MCS. The padding bits before the encoder are not suitable for the packet-centric protocol, such as the brilliance, which implements the channel sequel before the platoon (four) link is compliant. In summary, the link-adaptive signal in the existing system has the following disadvantages: • Use the MCS index to calculate the performance of the cellular system. / Rate granularity results in too many MCS candidates and therefore leads to allocation, : 2::: Tiger cost. This is especially the case in flexible bandwidth systems. μ Unlimited broadband on available services • Discrete code rate candidates require additional padding bits to fill the packet. 121586.doc 200816754

Filled in the allocated resources, and thus even using a few MCS candidates due to the number of signals outside the MAC PDU size or the number of right-and-different charges, the cost is still relatively obvious. . True charging does not provide any coding gain, which is a waste of redundant bits. • Before the channel encoder 埴7 A — a True Charge TG makes it impossible to implement channel coding before the schedule and Ο c link adaptability, which is not suitable for a packet center agreement. The purpose is to eliminate at least some of the disadvantages using known techniques. SUMMARY OF THE INVENTION The object of the present invention is achieved by a method for link-adaptive signals in a wireless communication network comprising at least one of a transmitter and a receiver, comprising the steps of: determining a channel of the receiver The quality parameter, based on the determined, heart and stomach> number, allocates radio resources for at least one user in the Shai wireless communication network, wherein a further feature of the method according to the present invention is that the available coding and modulation candidates are Selecting the encoding and user type for the user profile to fully populate the allocated radio resource 'notifying the receiver about the modulation mode for the user profile, notifying the receiver about; the size of the source nurturing packet (by its The encoding rate can be paid before the encoding of the user profile) and the step of encoding and modulating the user profile based on the selected encoding and modulation candidates. In this manner, the signal between the above transmitter and receiver makes it possible to perform channel coding in the MAC layer (Media Access Control Layer) prior to scheduling and link adaptation, thus making it suitable for - Packet Center Agreement. Moreover, it is no longer necessary to fill the bits to adequately fill the allocated resources and thus use the allocated radio resources that would otherwise be wasted by the use of padding bits for data transmission. This result is no longer necessary to separately signal the size of the source packet by the size of the transmission zone, because the size of the source packet is equal to the size of the transmission block according to the second method of the present invention. Therefore, when the cost of the field is similar to that of the existing system, more data can be sent in one source packet because there is no padding. In accordance with a specific embodiment of the method of the present invention, the size of a source data packet is based on a modulation mode for Φ _ . The user's assigned radio resources and the advantages of receiving this dependency technique inform the receiver of the further reduction in the number of jobs required for the size of the source data packet. The supplement can be performed by slanting resources to perform the compilation, selecting the user's radio port for the pair, the flat horse pain type, and the modulation mode selection.

Group C: The user radio of the pin assignment means that the coding rate and the modulation type are selected separately for the eight groups and the groups. The signal of the resource =〗 is performed for each such group or user radio group and the user radio resources allocated for each -f are classified into the same modulation group selection code, and for all such groups The group selects another option as the mode of modulation, and 4 selects the same coding rate for each assigned user radio resource. Ten pairs of all assigned user radio resource selection phases 121586.doc 200816754 ^ ± g s 卩 卩 M $ material selects the equal coding rate and modulation mode for all assigned user helmet edges. The line is used for the remote selection of the code rate. All of these strategies of the half-cycle type change in the amount of time required to complex the four-leaf nose. It is also possible to supplement the number of tweaks, selections, flat code rates and modulation modes in order to fill any allocated radio charges to the maximum allowable amount of radio resources. Therefore, for the size of the transmission block to be vacant, you want to pass k to the user.

U is the upper limit of the maximum allowable transmission block size. The above channel σ.quality can include the parameters sinr (signal to interference = noise ratio), mutual information, RBIR (received bit information rate, throughput, spectral efficiency, BLER (block error rate) or suitable for Characterized one of the other parameters of the kiss channel quality). Since the term BLER will be used further in this description, a definition will be given here. The BLER or block error rate can be defined as the ratio between the number of poorly received blocks and the total number of received data blocks. The BLER that can be supplemented is not a measured parameter but a pure experience. Typically, but not necessarily limited to the type of radio resources described above, the allocated radio resources for each user may include a carrier block, wherein the carrier blocks are one or more subcarrier frequencies in the OFDM channel. In terms of coding and coding rate selection, a plurality of consecutive coding rates can be used for CTC (sked, smart wheel coding), convolutional code, BTC (block turbo coding), LDPC (low density parity check) and other suitable coding. The encoding is selected intermediately, wherein a coding rate is selected to satisfy a predefined 121586.doc • 12 - 200816754 BLER (block error rate) target. The coding rates can be defined as the ratio between the number of information bits and the number of redundant bits. Considering the definition of BLER above, the BLERtarget can be defined as the BLER required to receive the signal, and therefore strictly speaking it is not the upper limit of the stiffness of the BLER. • At the same time, the code can be selected in the middle of a plurality of 〇 discrete coding rates for CTC, convolutional code, BTC (block turbo-horse) LDPC (low privilege, degree parity check) and other suitable coding, the discrete coding rate system One of 1/3, %, 2/3, 3/4, etc., in which the rate of the daring coding that satisfies a predefined Bler target is selected. Can be used in QPSK (Fourth Order Phase Shift Keying), 16 (^8)^ (16th Order Quadrature Amplitude Modulation) and 64QAM (64th Order Quadrature Amplitude Modulation) and is suitable for use in a wireless communication network. The plurality of modulation modes of the other modulation modes of the communication are selected in the middle of the modulation mode. An example of a source packet size in a wireless communication network may include C; the 802 PDU size (media access control packet data) The only constraint on the size of the MAC PDU is the maximum allowable transmission block size by use of the method according to the invention. Preferably, the method according to the invention can be implemented in a wireless communication network. In the road, it belongs to, for example, a wireless LAN, WiMAX, winner, . HiperLan or other group of wireless communication networks suitable for the above-mentioned link adaptation signals. According to another aspect of the present invention, the object of the present invention Implemented by a mobile station for communicating in a wireless communication network, comprising: a 121586.doc 200816754 device for determining channel quality parameters on a radio link; at least transmitting And means for transmitting information indicating channel quality on the radio link to one of the wireless communication networks based on the determined channel quality parameter; at least one receiver for indicating on the radio link Channel quality information is received by a node in the wireless communication network for information indicating radio resources not allocated to the mobile station, wherein the mobile station is progressively configured to negotiate with a node in the wireless communication network To be used for Ο

The number of bits in the source data packet to be transmitted to the node or to transmit a data signal through the node and the information in the source code packet. In accordance with a specific embodiment of the mobile station of the present invention, the mobile station can perform a means for modulating and encoding a data signal in accordance with the modulation type and the number of coded bits negotiated with the Hai node. According to another embodiment of the present invention, the mobile station can be configured to transmit the modulation type of the data signal and the encoded Bellow to the wireless communication. This node in the network. According to the action of the present invention, the mobile station can be further configured to use the information about the section in the wooden communication network of the Mumu. Variable type and encoded information. For example, 'the wireless communication network is crying, and the number of points in the network can be a base station transceiver port, and the W can be adapted to perform the above-mentioned method. Any other node. Another complaint of the month, the purpose of the present invention is to push γ, s, and 9 in the wireless communication network for implementation in a small-receiver: base station, which includes: to ', for receiving the indicated channel quality. Information; at least one of 121586.doc -14-200816754 200816754, for transmitting information indicating a reservation of radio resources for one of the mobile stations in the wireless communication network based on information indicative of channel quality, wherein The base station is further configured to negotiate with the mobile station for the modulation type to be used for the data signal of one of the subscription stations and the source data packet of the source code packet in the code source data packet The number of elements, and wherein the base station further includes means for modulating and encoding a data signal in accordance with the modulation 頮3L 协商, the number of zebra bits negotiated with the node. According to another aspect of the present invention, the object of the present invention is to include at least one of a wireless communication network, a network infrastructure μ, and at least one mobile station and a base station. a hairpin, wherein the at least-the mobile station and the base station further package: ..., a device for deep channel quality parameters, a mobile station and at least a base station, the receiver and the transmitter are configured to be based on the determined channel quality parameter To receive or transmit the indication-channel quality information, the characteristics of the first connection, the good connection is that the at least one mobile station and the base A are configured in one step for negotiating to be used for one, and the incoming package is the second &枓 枓 枓 调 调 调 调 来源 来源 来源 来源 来源 来源 来源 来源 来源 来源 来源 来源 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动 行动The term "door", a flat code - a data signal can be supplemented in accordance with the mobile station in the facility of the present invention and based on the above communication basis, and finally, in accordance with the present invention. In the wireless communication network, the link: the purpose of the dependency:::: is by using the present, which contains: - the instruction set, which is used to determine the program, the channel of the line link 121586. Doc •15- 200816754 ==: "Instruction set, which is used to allocate radio resources to each user in the mouth network based on the determined channel quality parameters; an instruction * 'the heart of the time (four) Selecting the coding and modulation type to fetch the right octave, and the ebony & 隹, 螭1 fills the allocated radio resources with a knife; an instruction...: is used to inform the receiver about the user data. The upper and lower amps are used to pass the size of the source packet before channel coding. The size of the month is lacking, and finally, an instruction set is used for

C; The selected coding and modulation candidates are used to encode and modulate the channel. The computer program according to the invention is particularly suitable for carrying out the steps of the method according to the invention. The invention will be more readily apparent from the following detailed description of embodiments of the invention. [Embodiment] FIG. 1 is a schematic diagram of one of LA (Link Adaptability) signals according to known techniques. The coded and modulated data in the form of information bits (IB) is to be inserted into a transport block of a size that is specially allocated. If the length of the information bit block is less than the allocated transfer block size, the padding bit (pB) is used to fill the remaining space. In the MAC layer (Media Access Control Layer), the number of padding bits is signaled from the transmitter of the user profile to the receiver. The cross-body layer (designated ρ Ή γ) in Figure 1 transmits the thus encoded and modulated symbol block to the receiver over the radio link. Here, a signal regarding the encoding rate and the modulation mode of the user data is executed at the solid layer. When only a few discrete code rates are used to encode the user profile, the coded block may not be adapted to the allocated transport block and will therefore have to add additional padding to the 121586.doc -16-200816754 Bit. Figure 2 illustrates a possible embodiment of one of the methods according to Mu Yuming. The method illustrates a link adaptation signal between a mobile station (UE, user equipment) and a base station in a green line L L,. In this exemplary embodiment of a method in accordance with the present invention, the vocalization illustrates communication between a mobile station (UE) and a base station (BS). The UE is a user device of any class 51 capable of communicating with a UE-like line in a wireless communication network and is therefore not limited to a specific type of mobile device. The base station may be a Node B or a certain A other type of base station device, such as an access point in a wireless communication network. In step 2, the base station measures the quality of the wireless link by comparing the received data with a desired link from the received data. For example, the parameter to be determined may be the s signal pair noise to interference ratio of the _ signal previously received by the Node B and is defined as a CQI (Channel Quality Information). Other parameters used to measure the quality of the wireless link may be mutual information, RBm (received bit information rate), BLER (block error rate) or suitable for: CQ (channel quality) and are familiar to the skilled artisan. Other well-known parameters are followed, for example, at step 110, the determined CQI is transmitted from the UE to a Node B on a selectable channel. According to the received _CQI, the section (4) allocates radio resources, and the basin 2 owes % 4 JN, which can be allocated as a source block or each carrier block in the carrier block can be on the OFDM downlink. Data transmitted - or multiple subcarriers. ... 121586.doc 200816754 In the: step 12 °, the node is to be transmitted to the _ data selection =, . ' flat code rate. This may be a discrete coding rate or a coding rate selected from a range of consecutive programmed horse rates, wherein, for example, the coding rates are expressed as the number of redundant bits and the data bits used for encoding The ratio between the numbers and the range can be between (^ and ... and the step is 〇〇1. ° ^Use CTC (returning thirst wheel code), whirling code, BTC (block coding (low density parity check) Or other suitable η encoding of the signal. Vanadium is ordered as a teleselective-(four) semaphore-coding rate, and the encoded signal must satisfy certain conditions associated with the characteristics of the radio link between the far UE and the node β. For selecting one of the encoding rates, such a condition can be encoded using the highest encoding rate that satisfies =: 'BELLtarget_B〇BLER'. Here, the BLEp block error probability is caused by Tear (area - parameter ° in the previous text) defines BLER as the ratio of the number of defective blocks received to the total number of received data blocks. The unit that receives the data block such as δ hai is the ue. Therefore, you can define BLEP as the expected tear , where several considerations are measured r. = Please transmit the CQI is not completely accurate, b〇bler - ',, limit due to changes in the radio link, transmission and reception (its: well-known frequency This can occur when the impact is changed., # When using the discrete encoding rate, check the selected highest insult rate in step 130 to see if the sanding condition is met. If yes, then in step (10), select to pass L to use. The data signal of the person - the appropriate modulation mode. If not, then select the next highest coding rate among the remaining coding rate candidates and again check whether the above BLEP condition is satisfied. However, when using the continuous coding rate When, the encoding rate that exactly satisfies the BLEP condition is selected.

In step 140, one of the data modulation modes is selected to satisfy the condition of the maximum standardized user delivery amount for each subcarrier, which is defined as N〇rmTP=M〇d〇rder*Cr*(l-BLER), Wherein Mod〇rder=1〇g2M is for a modulation order having a modulation distribution of one of the elements, and the coding speed of the Cr system satisfying the aforementioned condition BLEP<=(BLERtarget-BOBLER) is in the next step 160, Node B checks if the selected modulation mode satisfies the equation such as 〇11丁? 2]\4〇〇1〇1^1*(:]:*(1-:61^11). Here,]^〇〇1171> is the standardized user throughput. The selected modulation mode is not In the case of satisfying the condition of the maximum standardized user delivery amount, the next modulation mode is selected and the check is performed here. 2: If the right-hand modulation mode satisfies the condition of N〇rrnTp, the first selection is used. Encoding rate and modulation mode to encode and modulate data to be transmitted to the O UE. In step 170, the modulation mode and the number of data bits in the data to be transmitted to the UE are transmitted on an available control channel. So far, Node B can pass through several

Signaling from Node B to the UE. When the modulation mode is signaled to the UE, the bit is expressed in the form of a modulation mode index. 121586.doc -19-

200816754 It should be mentioned that the measurement of "^^ at step 丨(10) or some other channel quality parameter performed by the UE is continuously performed because the transmission conditions on the radio link must be constantly changed. - There are still different Available link adaptation schemes with varying computational complexity and link-adaptive semaphores. Five link adaptation schemes are briefly presented below. ~ Assume that multiple carrier blocks are allocated to each in an OFDM system. For a user, the following possible LA schemes are listed: LA0 • The Mcs selection in the carrier block mode, that is, the modulation and marshalling rate is adapted to the channel from carrier frequency block. (4)·· has the carrier frequency block mode Modulating multiple coding rates of adaptation. The carrier blocks are classified into groups to maintain smaller CQ changes within each group. Code rate adaptability is achieved for each group. LA2: Multiple codes Rate, per-coding rate has a single-modulation mode, that is, the group-based Mcs adaptability. The packet procedure is the same as the ^-type LA3 · early one coding rate, with the modulation of the carrier frequency block to adapt to LA4: Target The single mcs of the carrier blocks. The LA0 to LA3 schemes are frequency domain LA, which requires additional signals to support the different McSeLA4 time domain link adaptability, and the common medium will be a common MCS. Used for all such carrier blocks. Before transmitting the modulated and programmed data of the code rate to the UE with the modulation of the signal, the 弋/,,, and the code rate are transmitted to the UE. The mussels in step 170 are adapted to the link of the node B. The signal can also be adjusted to 121586.doc -20-200816754, and the link adaptability signal can be deactivated. Partially, _ is transmitted to the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Road ("wireless or a wire-bonded communication network"), there is a specific transmission (ie, data packet) in the basin, and the child is in the large ® symbol for the one-U-tool and in which the 昧Ο-- The symbol is transmitted using a specific expected quality. In this case and regardless of the number of symbols to be transmitted, there is a modulation and coding method that completely fills the selection of the far-emission. 70王见> 考图3 'Significantly 诵 诵 诵 f f 士 士 丄 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 深 k k k k k k k k k k k k k k One of the signals between a Bs (base station) and the two different signals (not proportional). For the sake of simplicity =, the rest of the network is not displayed. In the specific embodiment depicted in Figure 3, the direction of the bead transmission is in the downlink direction, i.e., from the BS to the UE. The UE includes a receiver/(4) device 21 from which to receive data and to the BS material. Naturally, the receiver and transmitter may also be separate units and the UE may also include multiple receivers and transmitters. In addition to receiving the data from this, the UE also receives a control (four) message on a control channel, where (for example) it informs about the radio resources allocated thereto. In addition, the UE includes a unit 220 for determining the SINRe of the radio link over which the BS communicates, typically using a signal 2SINR received by the receiver/transmitter 210 for decision The SINR in this unit 220 121586.doc 200816754. A data signal is schematically displayed by arrow 240 by which it is transmitted and received at the UE. The unit 22 can also measure any other signal parameters associated with channel quality based on the signal received by the unit. Thus, in addition to measuring only the SINR of the received signal, the UE can also measure other parameters related to the quality of the radio link between 11] and *BS, such as • RBIR (Receive Bit Information Rate), RSSI (Received Signal Strength Indication) and other parameters associated with zeroing the reception and transmission conditions on the radio link. In addition, the UE further includes a unit 23 for selecting a TFRC/Specialized Formatted Resource Combination, which relates to possible transport block sizes, modulation schemes, and other related link adaptation parameters. This unit is compiled to be transmitted (indicated by arrow 242) to the BSi-message channel index via the receiver/transmitter 210). After the BS has received an acknowledgment (indicated by arrow 246), the BS transmits a modulated data signal to the UE in accordance with the modulation obtained by the information message transmitted by the UE, indicated by arrow 248. Additionally, the encoded and modulated data signal can include information indicative of the modulation mode and coding rate for the data signal in a control channel. However, this information can also be transmitted separately in one of the ue-control messages before the data signal is transmitted. The port, the supplementary system, is used to select a unit of a TFRC, and it is not necessary to be in the middle and the equal part is the part of the B S . In this case, the CQI message from the UE to the child BS is simpler and contains the indication of the measured SINR, and the calculation of which coding rate and modulation mode should be selected will be used. - 200816754 is executed by the BS. Moreover, in the case where a data signal is to be transmitted from the UE to the UI, the direction of the link adaptation signal in Figure 3 will be reversed. 4 illustrates communication between a -BS, -UE, and - in accordance with another embodiment of the present invention. • In the case of the specific embodiment illustrated in Figure 3, the g BJ style is not drawn to scale. (1) In the specific embodiment of the present invention, the UE is essentially the same as the one shown in the figure (hence the same reference), but does not have a unit 23 for selecting an appropriate I rate and mode. In fact, the elevation basically only has the ability to transmit, receive and measure the channel quality on the radio link and to transmit information such as CQI to the 33 (not shown). Similarly, the BS has a receiver/transmitter. 3丨〇 for receiving from the UE, 'transporting bedding and control signals' - means 32G for measuring the quality of the radio link and a unit 330 for selecting a data signal for modulation mode : code rate - appropriate combination to adequately fill the transport block and encode the data signal in accordance with such parameters. For the purpose of receiver or transmitter diversity, the BS may contain one or more receivers or transmitters 3 1 0. r is indicated by the arrow 330 to 338 to indicate the link adaptation signal between the ^ and the BS. Assuming that the BS has allocated the necessary radio resources for the UE*, the 8 § "" is transmitted to the UE, indicated by arrow 33〇 After receiving, the UE measures the sigma of the wireless 121586.doc -23-200816754 electrical link by, for example, determining the sinr of the received signal. As a kiss (channel quality indicator), the information is transmitted back as ' Indicated by arrow 332. The received receiver/transmitter 31〇 receives the cqj, and the (10) determines the combination of the encoding rate and the modulation mode in the unit^, which will fully fill one. The product provides the maximum user throughput. While satisfying a given BLER (block error rate) target constraint. ▲ In the same unit 330, then according to the selected combination to encode and adjust f) to change a bedding signal and pass it through the receiver / transmitter 310 is transmitted to the Guhai UE. The advantages of the method, the mobile station and the base station can be summarized as follows: • It provides link adaptation signals to support continuous code rate adaptability, using the transport block size (or MAC) PDU size) and modulation mode index instead of traditional parallel signals for both the MAC PDU size and the Mcs index or compressed transport block size. U • No more need to fill the zero pad for a complete information block , enabling channel coding in the MAC layer before scheduling and link adaptation's, ie adapting to the packet center protocol. • Introducing variable signal bits based on scheduling signals and modulation modes • The transmission block The size (or MAC PDU size) is added to further reduce the signal. _ Select the optimal modulation mode and code rate based on the instantaneous channel quality information to maximize the user throughput. For the continuous code rate adaptability, the selected code The rate exactly meets the BELRTARGET requirement. For this discrete 121586.doc -24-

I 200816754 code rate adaptability, selecting the MCS closest to the BLERtarget among all the Mcs satisfying the BLERTARGET. This part gives the difference between the continuous coding rate adaptability and the discrete coding rate adaptability in different cases. The simulation results of the link adaptation scheme 'assume perfect channel knowledge and loop scheduler. Γ u Figure 5 and Figure 6 show a set of seven cell 2 system efficiencies in the _Μ downlink key with SIS〇 (simple input simple throughput) and 2W bandwidth 80W transmit power, in Figure 5 and Figure 6 The average cell throughput of the 5th percentile user throughput and RR (Radio Resource) scheduler and uniform pA (power adaptability) are displayed at the cell edge, respectively. It can be seen that for different key adaptation schemes, the perpetual code rate adaptability is significantly better than the discrete code rate adaptation f ° compared with the discrete coding rate adaptability, and the cell throughput is increased greatly. The user's throughput is 0.65 Mbps at the cell edge, and the continuous adaptation rate extends the coverage to 4% of the discrete coding rate adaptability. It is also interesting to see that this frequency domain modulation adaptability only results in a high 3% cell throughput gain and no gain or even slight loss in user throughput at the cell edge. Similar results can be observed for the simulation results of Fig. 7 and Fig. 8. Fig. 8 shows that there is 1X2 SIM〇 (single input and multiple delivery) (ie, the 5th percentile for the cell edge (Fig. 7). 7 cell performances with average + zone throughput (Figure 8) - antenna receiver diversity. Even with two antennas, the gain in both capacity and coverage due to the use of contiguous, ., and m code rate adaptations is still significant. BRIEF DESCRIPTION OF THE DRAWINGS 121586.doc -25- 200816754 Figure 1 illustrates a link adaptation signal in accordance with known techniques - schematic diagram Figure 2 illustrates a flow diagram in accordance with one of the methods of the present invention. Figure 3 illustrates a mobile station in accordance with the present invention. Figure 4 illustrates a base station in accordance with the present invention. Figure 5 illustrates the 5th percentile user for the edge of the cell~ for SIS〇 (single-input single-transport homing gamma, hitting and receiving 7 transmitters I, contiguous, code rate adaptability The ratio between the performance and the continuous code rate adaptability of the one-to-one receiver. A second pattern. Figure 7 illustrates the discrete and continuous code rate adaptation of one of the 1X2 SIM0 (single input multi-delivery) receivers/transmits for the 5th percentile user throughput at the edge of the cell. Between sex - performance comparison - third

U Θ. A fourth pattern for the comparison of the effectiveness of one of the discrete and continuous code rate adaptations of one of the 射] SIMs for the average cell throughput. [Main component symbol description] 21〇220 230 Receiver/transmitter unit/device unit/device arrow 121586.doc -26-240 200816754 Ο 242 arrow/information 246 arrow/information 248 arrow 310 receiver/transmitter 320 device 330 Arrow / Unit / Device 332 Arrow 334 Arrow 336 Arrow 338 Arrow BS Base Station / Node UE Mobile / User Equipment 586 121586.doc -27-

Claims (1)

200816754 X. Patent Application Range: A method for link adaptation signals in a network comprising at least a transmitter s receiving, comprising the steps of: a • determining a channel quality parameter at the receiver; For the wireless communication line power resource; b• assigning no features based on the determined at least one user of the channel quality parameter network t is the following further steps: U C. Selecting the choreographer and modulation type for the user profile from the available code modulation candidates to fully fill the allocated radio resources; • Notifying the receiver about the modulation mode for the user profile e) notifying the receiver of the size of the source data packet by which the encoding rate can be obtained prior to encoding of the user data; and f. encoding and modulating the encoding according to the selected encoding and modulation candidates User profile. 2. The method of claim 1, wherein the size of the one-source data packet of a user is based on at least a allocated radio resource and the received modulation mode. 3. The method of claim 1 or 2, characterized in that the code type and modulation mode selection are performed by using a radio lean source for each assigned individual port (7). ° 4. The method of claim 丨 or 2, which is characterized by I2l586.doc 200816754 = other allocated user radio resources are classified into groups, and the pin, ', 〆 such jun _, the group respectively perform the coding And the method of claim 1 or 2, characterized in that the individually assigned users are classified into groups and the coding selection is performed for each type of group, and is the same for all such groups. will. The method of selecting the item 1 or 2 is characterized in that the modulation mode resource of each user radio resource allocated 4 m is individually selected. Selectively for all assigned users wirelessly. 7. The method of claim 1 or 2 is characterized by selecting the encoding rate and the user of the modulation а-, fly & for all assigned users. ..., line electricity source is equal. 8. If the method of one of the claims 1 to 7, the method of selecting the coding rate and the helmet line H ^ ^ 杈 杈 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 以便 任何 任何 任何 任何 任何 任何8 one...,, - the maximum allowable amount of Beiyuan. The < method, wherein the channel quality is related to the noise ratio), the mutual information includes the parameter SINR (signal to interference and 曰ut, receiving bit information rate), wheel inverse, spectrum efficiency, ΒΙ^ Fanbei Idle vehicle) transports πσ 4 error rate) or a combination of other parameters suitable for characterizing 121586.doc 200816754 quality. The method of S-months 1 to 9 wherein the radio resources of the carrier blocks for each user include carrier frequency blocks, such as the method of requesting money, carrier frequency. among them a second coding system selected from a plurality of consecutive coding rates for CTC (cyclotron turbo coding), convolutional codes, 2 thirsty wheel codes, LDpc (low density parity check), and other H codes, the rates satisfying a pre- Define the BLER (block error rate) target. 12. A method as claimed in any one of the preceding claims, wherein the code is selected from the group consisting of (10), convolutional code, coffee (block turbo coding), LDPC (low density parity check), and other suitable codes. The policy, the flat code rate, the discrete coding rate system is /3, %, 2/3, %, etc., wherein the highest programmed stone rate of the full predefined BLER target is selected. A method according to any one of claims 1 to 12, wherein the modulation modes are selected from the group consisting of QpSK (fourth-order phase shift keying), 16QAM (16th-order quadrature amplitude modulation), and 64QAM (64-order positive) Amplitude modulation) and a plurality of modulation modes suitable for other modulation modes of communication in a wireless communication network. 121586.doc 200816754 14. 15. 16.Ο 17. 方法 Method of one of claims 1 to 13 where the source data packet size includes the MAC PDU size (Media Access Control Packet Data Unit). The method of claim 14 wherein the MAC PDU size is constrained by a maximum allowed transport block size. The method of any one of claims 1 to 14, wherein the wireless communication network belongs to a wireless communication network such as a wireless LAN, WiMAX, WINNER, HiperLan, or other wireless communication network suitable for the link adaptive signal. The group of roads. A mobile station (ue) for communicating in a wireless communication network, comprising: a device (220) for determining a channel quality parameter on a radio link; at least one transmitter (21A), It is configured to transmit information indicating the channel quality on the radio link to a node (BS) in the wireless communication network based on the determined channel quality parameters; at least one receiver (210) for Receiving information (2 4 6) indicating the radio resource allocated to the mobile station (UE) by the node (BS) based on the information (242) indicating the channel quality on the radio link, characterized by the action a station (UE) is further configured to negotiate with the node in the wireless communication network for the modulation type to be transmitted to or transmitted by the node and to encode the source data packet The number of bits in a source packet before the message. 121586.doc 200816754 18. The apparatus (10) of claim 17 wherein the mobile station (UE) further includes a code number of the bits to modulate the type and the end of the sequence to encode and encode a data signal. 19. According to the lines of claims 17 to 18, TM, m ^ °, wherein the mobilization station (UE) is further set to be used for the 5 The type of weekly intersection and the coded information are sent to the node in the 5H wireless communication network. The mobile station (UE) is further configured to receive, by the node in the wireless communication network, a modulation about a data. Type and encoded information (246) 21. The mobile station of one of the preceding claims 16 to 18, wherein the node (BS) in the wireless communication network is a base station transceiver. A base station (BS) for communicating in a wireless communication network, comprising: at least one receiver (3 1 〇) for receiving information indicating channel quality; at least one transmitter (3 1 〇), Information for transmitting a reservation indicating radio resources for a mobile station (UE) in the wireless communication network based on the information indicative of channel quality, characterized in that the base station (BS) is further configured to interact with the action The station (UE) negotiates the modulation type to be used for a data signal to be transmitted to the mobile station (UE) and the number of bits in a source data packet before encoding the information in the source data packet, and Wherein the base station further comprises a device (3 3 0 And a method for modulating and encoding a data signal according to the modulation type negotiated with the node and the number of coding bits. 23. A type for including at least one mobile station (UE) and a base station ( BS) 121586.doc 200816754 The network infrastructure of the wireless communication network, the at least one mobile station (1) magic and base station (BS) comprising at least one receiver (21〇, 31〇) and a transmitter (210, 310) The at least one mobile station (UE) and a base station (7) y further comprise means (220, 320) for determining a channel quality parameter of a wireless connection, wherein the at least one mobile station (UE) and the base station The at least one receiver and transmitter (210, 3 10) are configured to be based on the determined The channel quality parameters are used to receive or transmit an indication - the quality information of the channel quality of the wireless connection. The feature is that the at least one mobile station (UE) and the base station (BS) are further configured to negotiate a data to be used. The modulation type of the signal and the number of the bits in a source packet before encoding the information in the packet, and wherein the at least one mobile station (UE) and the base station (BS) each include a device |23〇: 330) for modulating and encoding a data signal according to the type of modulation negotiated and the number of coded bits. A computer program for a chain 4 adaptive signal in a wireless communication network, comprising: a· a set of instructions for determining a channel quality parameter for a radio link; b·= An instruction set for allocating radio resources for allocating radio resources for each user in the communication network based on the determined channel quality parameters; c. one for selecting coding and modulation types An instruction set for selecting a candidate for the user profile from the available code modulation candidates to select 121586.doc encoding and modulation type to use a non-line resource for notifying the n allocation; The modulation and modulation device is used to notify the connection, the user code and modulation on the poor material. e. An instruction for notifying the source packet size... (2) It is known that the receiving (four) is the size of the source packet; and f. 7 is an instruction set for encoding and modulation, which is used to encode and modulate the channel according to the selected encoding and modulation candidates. 200816754 121586.doc