TWI336188B - Method and apparatus for sub-slot packets in wireless communication - Google Patents

Description

1336188 IX. INSTRUCTIONS: TECHNICAL FIELD OF THE INVENTION The present disclosure relates generally to communications, and more particularly to transmission techniques for wireless communication systems. [Prior Art] A wireless communication system is widely used to provide various communication services such as voice, video, packet information, message transmission, broadcasting, and the like. Such systems may be multiple access systems capable of supporting multiple users by sharing available system resources. Examples of such multiple access systems include a code division multiple access (cdma) system, time-sharing multiple access (Phase system, frequency division multiple access (fdma) system, orthogonal FDma (ofdma) system, and single carrier Fdma(sc fdma) 。. The re-access system can utilize - or multiple multiplex mechanisms such as code division multiplexing (cdm), time division multiplexing (TDM), etc. The system can be adopted and can be used as an existing one. Terminals. These multiple access systems may conventionally include packets occupying - or multiple slots in transmission. It may be desirable to improve the performance of the system while maintaining backward compatibility with existing terminals (backward (7) called secret kisses). For example, Lu's need to use space technologies such as Multiple Input Multiple Output (MIM〇) and Multiple Domain Multiple Access (SDMA) to improve throughput by exploiting the additional spatial dimensions provided by multiple antennas. Or reliability. Therefore, there is a need in the art for a transmission technique for forward link packets that can support packets occupying one of the following conventional slots. In addition, there is support for space technology while maintaining the existing Backhaul compatibility transmission of terminal The need for technology. H8974.doc 1336188 SUMMARY OF THE INVENTION Techniques for efficiently transmitting and receiving data in a wireless communication system are described herein. The techniques utilize slot structures that are compatible with existing design tracebacks. And receiving a full-slot forward link packet occupying one or less of the slot structure. The techniques also selectively employ orthogonal frequency division multiplexing (OFDM) to effectively support spatial techniques and/or other advanced communication techniques. According to one aspect, an access point includes a receiver, at least one processor, a memory coupled to the at least one processor, and a transmitter configured to transmit an output waveform. The receiver is configured to self A remote station receives channel information, and the channel information includes ACK/NACK (acknowledgement/negative acknowledgement) information. At least one processor is configured to generate an output waveform comprising at least one slot. Each slot is segmented into two One half of the slots, at least one of which contains one of the data units of the packet. At least one processor is also configured to interpret the Ack/NACK resource to determine whether the data unit should be retransmitted to the remote station. In another aspect, a terminal device includes at least one processor, a memory coupled to the at least one processor, and a transmitter for transmitting channel information including ACK/NACK information. Configuring to process an input waveform comprising at least one slot. Each slot is segmented into two half slots, at least one of which includes a data unit of one packet. At least one processor is further configured to process the data unit Determining whether the data unit is accurate 'and generating ACK/NACK information in response to processing the data unit. According to another aspect, a communication system includes the access points and terminals described above, the access point and The terminals communicate with each other to pass the 118974.doc 1336188 signal output waveform in a forward link and communicate ACK/N ACK information in a reverse link. According to yet another aspect, a method includes generating an output waveform at an access point. The output waveform contains at least one slot. Each slot is segmented into two half slots, at least half of which contain a data unit of one packet. The method also includes processing the output waveform at a terminal to retrieve the data unit, and processing the data unit to determine whether the data unit is accurate. The process of generating ACK/NACK information in response to the result of processing the data unit and the process of transmitting channel information including ACK/NACK information are also performed by the terminal. The method also includes interpreting the ACK/NACK information at the access point to determine if the data unit should be retransmitted. Various aspects and features of the present disclosure are described in further detail below. [Embodiment] The transmission techniques described herein are applicable to various wireless communication systems such as CDMA, TDMA, FDMA, OFDMA, and SC-FDMA systems. The terms "system" and "network" are often used interchangeably. The CDMA system can implement radio technologies such as cdma2000, Universal Terrestrial Radio Access (UTRA), Evolved UTRA (E-UTRA), and the like. Cdma2000 covers the IS-2000, IS-95, and IS-856 standards. UTRA includes Wideband CDMA (W-CDMA) and Low Chip Rate (LCR). A TDMA system can implement a radio technology such as the Global System for Mobile Communications (GSM). The OFDMA system can implement radio technologies such as Long Term Evolution (LTE), IEEE 802.20, Flash OFDM, and the like. UTRA, E-UTRA, GSM, and LTE are described in a document from an organization named "3rd Generation Partnership Project" (3GPP). Cdma2000 is described in documents from an organization named "3rd Generation Partnership Project 118974.doc 1336188 2" (3GPP2). These various radio technologies and standards are known in the art. For the sake of clarity, the following describes various aspects of such techniques for implementing the High Rate Packet Data (HRPD) system of IS-856. HRPD is also known as Evolution Data Optimization (EV-DO), Data Optimization (DO), and High Data Rate (HDR). The terms "HRPD" and "EV-DO" are often used interchangeably. Currently, HRPD revisions (Rev.) O, A and B have been standardized, HRPD revisions 0 and A have been adopted, and HRPD revision C is being developed. HRPD Revisions 0 and A cover single-carrier HRPD (lxHRPD). HRPD Revision B covers multi-carrier HRPD and is compatible with HRPD Revision 0 and A backtracking. The techniques described herein can be incorporated into any HRPD revision. For clarity, the HRPD terminology is used in most of the following descriptions. Figure 1 shows an HRPD communication system 100 having multiple access points 110 and a plurality of terminals 120. The access point is typically in communication with the terminal. Fixed stations, and may also be referred to as base stations, Node B, etc. Each access point 110 provides communication coverage for a particular geographic area and supports communication of terminals located within the coverage area. Access point 11 Connected to a system controller 130 that provides coordination and control for such access points. System controller 130 may include, for example, a base station controller (BSC), a packet control function (PCF), a packet data servo node (PDSN), and the like. Network entity. Terminal 120 can be dispersed throughout In the system, each terminal can be a fixed or mobile terminal. The terminal can also be called an access terminal, a mobile station, a user equipment, a subscriber unit, a station, etc. The terminal can be a hive. Telephone, personal digital assistant (PDA), wireless device 118974.doc Y (8) deV1Ce), handheld device, wireless data machine, laptop, etc., the terminal can support any scratch (10) revision. In the terminal, the terminal can The access point receives the transmission on the forward link at any time; and the transmission can be sent to the "or multiple access points" on the reverse link. The forward key (or downlink) refers to Access point to the communication link of the terminal, and the reverse link (or uplink) refers to the communication link from the terminal to the access point. Figure 2 does not support the iCDM single on the forward link in HRPD The carrier slot structure 200 transmission timeline is divided into slots. Each slot has a duration of 1 gw milliseconds (ms) and spans 2 〇 48 chips. For 1 2288 million chips per second (MCps) The chip rate, each chip has a duration of 8138 nanoseconds (four). It is two identical half slots. Each half slot contains (1) an overhead segment, which includes a pilot segment at the center of the half slot and two on both sides of the pilot segment. Media access control (MAC) segments; and (two traffic segments, which are on either side of the consumption segment. The traffic segment may also be referred to as a traffic channel segment, a data region Segment, data field, etc. The pilot segment carries the pilot and has a duration of 96 chips. Each MAC segment carries a signal (e.g., reverse power control (Rpc) information) and has a duration of 64 chips. Each traffic segment carries traffic information (e.g., unicast data for broadcasts, terminal broadcasts, etc.) and has a duration of 400 chips. HRPD Revisions 0, A, and B use CDM for materials sent in the Traffic Zone. A traffic segment can carry CDM data for one or more terminals served by an access point. The data symbols for the terminal can be processed based on the encoding and modulation parameters to generate data symbols. The encoding and modulation parameters I18974.doc -10· 1336188 are based on the channel feedback received from each terminal. determine. The multiplexable data symbol for the terminal or the terminals is overwritten with a 16-chip Walsh function or code to generate CDM data for the traffic segment. Therefore, the Walsh function is used to generate CDM data in the time domain. The CDM Traffic Zone is the traffic section that carries CDM data. It may be desirable to use OFDM and/or Single Carrier Frequency Division Multiplexing (SC-FDM) for data transmitted in the traffic section. OFDM and SC-FDM partition the available bandwidth into a plurality of orthogonal subcarriers, which are also referred to as tones, bins, and the like. The data can be used to modulate each subcarrier. In general, modulation symbols are transmitted in the frequency domain by OFDM and modulated symbols are transmitted in the time domain by SC-FDM. OFDM and SC-FDM have certain desirable characteristics, such as the ability to easily combat inter-symbol interference (ISI) caused by frequency selective fading. OFDM can also effectively support ΜΙΜΟ and SDMA, and SDMA can be applied independently to each subcarrier and can therefore provide good performance in the frequency selective channel. For clarity, the following description uses OFDM to transmit data. It may be necessary to support OFDM while maintaining backward compatibility with HRPD revisions 0, A, and B. In HRPD, the pilot and MAC segments can be demodulated by all active terminals at any time, and the traffic segments can only be demodulated by the servoed terminal. Therefore, backtracking compatibility can be achieved by maintaining the pilot and MAC segments and modifying the traffic segments. The OFDM data may be transmitted in an HRPD waveform by replacing the CDM data in a given 400 chip traffic segment with one or more OFDM symbols having a total duration of 400 chips or less. 3A shows a single carrier slot structure 300 that supports OFDM in HRPD. 1 l8974.doc 11 For the sake of simplicity, only one half slot is shown in Figure 3A. The half slot includes: (i) a consumable segment including a 96-chip pilot segment at the center of the half slot and two 64-chip MAC regions on either side of the pilot segment And (ii) two traffic segments on either side of the consumable segment. In general, each traffic segment can carry one or more OFDM symbols. In the example shown in Figure 3A, each traffic segment carries two OFDM symbols, and each OFDM symbol has a duration of 200 chips and is transmitted in an OFDM symbol period of 200 chips. Figure 3B shows a single carrier slot structure 302 that supports CDM and OFDM in HRPD. The half slot includes: (1) a consumption segment including a 96-chip pilot segment and two 64-chip MAC segments, and (ii) two traffic segments in the consumption zone On both sides of the segment. In one design, CDM or OFDM can be selected for each traffic segment. In this design, each CDC data can be carried by each of the traffic segments when CDM is selected, or one or more OFDM symbols can be carried by each of the traffic segments when OFDM is selected. In other designs, a traffic segment can carry CDM data and OFDM data. For example, a traffic segment can carry CDM data in one half of the traffic segment and carry one or more OFDM symbols in the other half of the traffic segment. In general, OFDM symbols can be generated based on various OFDM symbol numerologies or designs. Each OFDM symbol is digitally associated with a particular value of a related parameter, such as OFDM symbol duration, number of subcarriers, loop preamble length, and the like. The OFDM symbol duration should be an integer divisor of the 400 chip traffic segment in order to fully utilize the traffic segment. In addition, the sample rate of the OFDM symbol should be an integer multiple of the chip rate of the CDM data 118974.doc 12 1336188 to simplify the handling at the access point and the terminal. Three example OFDM symbolic digits for HRPD are listed. These digital studies are selected to be compatible with the HRPD slot structure and chip rate such that (1) an integer number of OFDM symbols are transmitted in a traffic segment and (ii) the sample rate of the OFDM symbol is the chip rate of the CDM data. Integer multiple. The digits are further selected such that the total number of subcarriers (which determines the discrete Fourier transform (DFT) size) allows efficient generation of OFDM symbols. For these digits, the total number of subcarriers is not a power of two but a small prime factor. For example, 90 subcarriers can be obtained with a quality factor of 2, 3, 3, and 5. A small prime factor may allow for efficient mixed base fast Fourier transform (FFT) implementation to produce OFDM symbols. The numerology shown in Table 1 allows for the efficient embedding of OFDM data in the HRPD forward link waveform. Table 1 Parameter Normal OFDM Symbol Digitology 1 Normal OFDM Symbol Digitology 2 Normal OFDM Symbol Digitology 3 Unit Sample Rate 1·2288χ« 1.2288χ« 1.2288χη Msps Number of Subcarriers i 9〇χ« 18〇xaj 36〇x/ 7 Subcarrier spacing 13.65333.. 6.82666.. 3.41333.. KHz Useful part 90 (73.2421875 με) 180 (146.484375 μβ) 360 (292.96875 μβ) Chip loop preamble length 7.5 («6.10 με) 16 («13.02 μδ) 36 («29.30 με) Chip window protection time 2.5 (»2.03 ps) 4 («3.26 με) 4 («3.26 μ$ chip OFDM symbol duration 100 («81.38 με) 200 («162.76 ps) 400 (»325.52 μδ) Chips Any OFDM symbolic digits in Table 1 can be used to replace CDM data in the 118974.doc •13· 1336188 traffic section with OFDM data. These OFDM symbolic digits provide information on Doppler extensions. (D〇ppler spread) and different tolerances for multipath delay tolerance. Digital 1 has the largest subcarrier spacing and the shortest cyclic preamble compared to digital 2 and 3. Therefore, Digital 1 can provide better Duller tolerance (attributable to Subcarrier spacing) and lower delay tolerance (due to shorter cyclical terms) is the high spectral efficiency in the submarine-enabled south speed vehicle channel. Digital Studies 3 and Digital Studies 1 and 2 Compared to having the smallest subcarrier spacing and the longest cyclic preamble. Therefore, Digital 3 can provide lower Doppler tolerance (due to smaller subcarrier spacing) but higher delay tolerance ( Due to the longer cyclic preamble), it can enable high spectral efficiency in the presence of large multipath delays (such as multipath delays induced by repeaters). Other OFDM symbolic digits can also be used. In the traffic segment. In general, OFDM symbolic digitization can be selected such that: (i) 〇 FDM symbol duration and sample rate are compatible with HRPD slot format and chip rate, respectively, and (ii) DFT size allows for validity 0FDM symbol generation. This can then be used to replace CDM data in the HRpD forward link waveform with 〇FDM data in a valid and backwards compatible manner. Selectively replace CDM data with 〇FDM data in each traffic segment For backward compatibility Consumption holding section. In one design, a fixed number of symbols 〇FDM Department for all segments carrying OFDM TVM information purposes. The terminal can know this OFDM symbolic digits a priori and can demodulate the transformed FDM data without any signal transmission with respect to digital. In another beta, configurable OFDM symbolic digits can be used for a given traffic segment of the FF. Supportable - group digits (for example, the numbers listed in Table 1). Different digital studies can be used for different terminals. A suitable digital science can be selected for the terminal based on the channel conditions of each terminal. For example, Digital 1 can be used for high speed traveling terminals, Digital 3 can be used for terminals with large multipath delay spread, and Digital 2 can be used for terminals with medium speed and/or medium multipath delay spread. machine. 4 shows a multi-carrier slot structure 400 that supports cdm in HRPD. In HRPD Revision b, multiple 1 xhrpd waveforms can be multiplexed in the frequency domain to obtain a multi-carrier HRPD waveform that fills a given spectrum configuration. In the example shown in Figure 4, the three 1 x HRPD waveforms for the three HRPD carriers 1, 2, and 3 are frequency multiplexed in a 5 MHz spectrum configuration. Each lxHRPD waveform is generated for a different carrier and occupies approximately 125 MHz. The three lxHRPD waveforms occupy approximately 3x1.25 = 3.75 MHz, which leaves a relatively large guard band at the two edges of the 5 MHz spectrum configuration. The spacing between adjacent carriers is not specified in the HRPD but is typically chosen to provide a small transition band between adjacent lxHRPD waveforms. As shown in Figure 4, the multi-carrier HRPD waveform contains three consumption segments and six traffic segments for three of the carriers in each half slot. As shown in Figure 4, each traffic segment can carry CDM data. The CDM data in each of the multi-carrier HRPD waveforms can be selectively replaced by OFDM data. In addition, the traffic and consumption segments in the multi-carrier HRPD waveform can be arranged to efficiently utilize the spectrum configuration. Figure 5 shows a multi-carrier slot structure supporting CDM and OFDM in HRPD. 118974.doc •15· 1336188 5 00. In the example shown in Figure 5, three HRPD carriers are transmitted in a 5 MHz spectrum configuration and the equal-equivalent carriers are spaced as closely as possible to improve bandwidth utilization. For each HRPD carrier, each half slot includes: (1) a consumable segment including a pilot segment and a MAC segment; and (ii) two traffic segments on both sides of the consumable segment . The HRPD carrier 1 is included in the traffic segments (TS) la and lb on the left and right sides of the consumption segment, and the HRPD carrier 2 is included in the traffic segments 2a and 2b on the left and right sides of the consumption segment, and the HRPD carrier 3 includes The traffic sections 3a and 3b on the left and right sides of the consumption section. Each of the traffic segments for each HRPD carrier can carry CDM data or OFDM data. For a 3-carrier HRPD in a 5 MHz spectrum configuration, as shown in Figure 5, an OFDM symbol can be generated at a sample rate of 4x1.2288 = 4.9152 Mcps 〇 = 4). The OFDM symbol can then occupy most of the 5 MHz spectrum configuration. Alternatively, an OFDM symbol can be generated at a sample rate of 3 X 1.2288 = 3.6864 Mcps («=3), which is not shown in FIG. An OFDM symbol can be generated for each OFDM symbol period in a traffic time interval. Each OFDM symbol period is 200 chips in the case of OFDM symbol number 2 in Table 1. The OFDM symbols may carry OFDM data in (i) subcarriers corresponding to the traffic segments for OFDM and (ii) remaining available subcarriers at both edges of the spectral configuration. The OFDM symbol can also be made to have a null value on the subcarrier corresponding to the traffic segment having the CDM data. The OFDM symbols can thus carry OFDM data that can selectively replace CDM data for zero or more traffic segments of zero or more HRPD carriers. OFDM allows for better utilization of the available spectrum in a 5 MHz spectrum configuration. H8974.doc -16- 1336188 may select the spacing between HRPD carriers based on various factors such as the pulse shaping filter for CDM, the manner in which CDM data is generated, and/or the OFDM data. The guard subcarriers can be used at both edges of the spectrum configuration, and the guard subcarriers are subcarriers that do not have transmission. The number of guard subcarriers at the edge of the strip can be selected based on spurious emission requirements and/or other factors. 6 shows a multi-carrier slot structure 600 that supports CDM and OFDM in HRPD and more fully utilizes available bandwidth. The trough structure 600 includes all of the traffic segments and consumable segments in the trough structure 500 of FIG. The slot structure 600 further includes OFDM data in a portion of the spectrum of the pilot or MAC segments that are not used in the elapsed time interval of 224 chips. Additional OFDM symbolic digits may be defined for the elapsed time interval covering the 224 chips of the pilot and MAC segments. Such numerology may be selected such that (i) an integer number of OFDM symbols can be transmitted in the elapsed time interval and (ii) the sample rate of the OFDM symbol is an integer multiple of the chip rate. Two examples of OFDM symbolic digitization for the time interval are listed. The OFDM symbol transmitted in the elapsed time interval is referred to as the "long" OFDM symbol because its duration is "normal" sent in the traffic interval than in the case of the corresponding digital science in Table 1. The duration of the OFDM symbol is long. Table 2 Parameter Long OFDM Symbol Digitology 1 Long OFDM Symbol Digitology 2 Unit sample rate 1.2288χη 1.2288χ” Msps Number of subcarriers 10〇χ« 20〇xn Subcarrier spacing 12.288.. 6.144.. KHz Useful part 100 (= 81.38 as) 200 (-162.76 μ8) Chip 118974.doc 17 Loop Preamble Length 8 0=6.51 ps) 20 (-16.28 ^s) Chip Windowing Protection Time 4 (-3.26 μβ) 4 (2.26) Ps) Chip ◦ FDM symbol duration 112 (-91.15 με) 224 (=182.29 ps Chip 1336188 Other OFDM symbolic digits can also be used to consume time intervals. In general, OFDM symbolic digitology can be chosen such that (i The OFDM symbol duration and sample rate are compatible with the HRPD slot format and the chip rate, respectively, and (ii) the DFT size allows for efficient OFDM symbol generation. As described below, each OFDM symbol period can be used in the elapsed time interval. Generating an OFDM symbol. The OFDM symbol can carry OFDM data in subcarriers corresponding to a portion of the bandwidth that is not used for the pilot segment and the MAC segment. The OFDM symbol can be corresponding to the pilot segment and the MAC segment. The subcarrier has a null value. One or more long OFDM symbols are used in the elapsed time interval to improve overall spectrum utilization.In the designs shown in Figures 5 and 6, four logical channels Chi, Ch2, Ch3, and Ch4 can be defined for the traffic segment. These logical channels may also be referred to as data channels, traffic channels, etc. The logical channel Chi may include the traffic segments 1a and 1b transmitted on the HRPD carrier 1, and the logical channel Ch2 may include the information transmitted on the HRPD carrier 2. For the traffic segments 2a and 2b, the logical channel Ch3 may include the traffic segments 3a and 3b transmitted on the HRPD carrier 3, and the logical channel Ch4 may include the traffic segments 4a, 4b and 4c transmitted on the remaining available spectrum. The logical channels Chi, Ch2, and Ch3 thus correspond to subcarriers that overlap with the HRPD carriers 1, 2, and 3. The logical channels Chi, Ch2, and Ch3 can be switched between CDM and OFDM in each slot, each half slot, and the like. Logical channel Ch4 does not have an associated HRPD carrier and can be used to improve bandwidth utilization. Logical Channel 118974.doc • 18· 1336188

Ch4 can also be split into two logical sub-channels, for example, lower Ch4 and upper Ch4, and each logical sub-channel contains a set of connected sub-carriers. These logical channels can be scheduled independently. For example, each logical channel can be scheduled based on channel quality feedback received from the terminal used for the logical channel. In general, any number of HRPD carriers can be transmitted in a given spectrum configuration. For each HRPD carrier, each traffic segment can carry CDM data or OFDM data. The OFDM data may also be transmitted in the remaining available spectrum that is not used by the HRPD carrier. Figure 7 shows a slot structure 700 that supports OFDM and CDM for a single HRPD carrier in a 5 MHz spectrum configuration. In the example shown in Figure 7, a single HRPD carrier is located near one edge of the 5 MHz spectrum configuration. As described above in Figures 2 through 6, the pilot and MAC segments for the HRPD carrier are generated and transmitted at the center of the half-slot. Each traffic segment of the HRPD carrier can carry CDM data or OFDM data. An OFDM spectrum can be defined to include all of the available spectrum in the spectrum configuration (except for HRPD carriers). In the example shown in Figure 7, the OFDM spectrum contains the available spectrum on both sides of the HRPD carrier. Normal OFDM symbols and long OFDM symbols can be extended and used to carry data in the OFDM spectrum. The traffic data, signal transmissions, and pilots can be transmitted in the OFDM spectrum in any manner (e.g., using any of the techniques typically used in systems employing only OFDM or OFDMA). For example, pilot and signal transmissions can be transmitted in any manner over any subcarrier and symbol period. The available subcarriers and symbol periods can also be configured for any number of terminals, and any data can be sent to the scheduled terminal at 118974.doc 19 1336188. In the design shown in FIG. 7, two logical channels Ch 1 and Ch2 ° logical channel Chi are defined to include the traffic segments 1a and 1b transmitted on the HRPD carrier 1, and the logical channel ch2 is included in the OFDM spectrum. Traffic sections 2a to 2f. The logical channel chi can be switched between CDM and OFDM in each slot, every half slot, and the like. The logical channel Ch2 is not limited to any HRPD carrier and can operate in pure OFDM mode to carry only OFDM data. The traffic data, signal transmission, and/or pilot can be transmitted in OFDM in any manner on logical channel Ch2. Figure 8 shows an HRPD slot structure 800 supporting OFDM in a 5 MHz spectrum configuration. In the example shown in Figure 8, the spectrum configuration does not contain HRPD carriers. Normal OFDM symbols and long OFDM symbols can be used to transmit data throughout the available spectrum (except for the protection subband at the edge of the band). The logical channel Ch 1 can be defined to cover the entire available spectrum. The logical channel Chl can be operated (as if it were for an OFDM/OFDMA system) and it can have design elements from other OFDM/OFDMA technologies such as Flash OFDM®, IEEE 802.20, LTE, and the like. The time-frequency resources in the logical channel Chi can be divided into traffic resources for traffic data, signal transmission resources for signal transmission, pilot resources for pilots, and the like. Signal transmission data can be used to schedule terminals and assign traffic resources to scheduled terminals. Signal transmission data can also be used to facilitate hybrid automatic retransmission (H-ARQ) feedback, power control, and the like. Various structural elements and physical layer features of flash OFDM®, IEEE 802.20 'LTE and/or other OFDM/OFDMA systems can be used for the logical channel Chi. 118974.doc • 20- 1336188 FIG. 9 shows a block diagram of one of the access points 110 and the terminal 120, the access point and the terminal being one of the access points and terminals in FIG. For the sake of simplicity, only the processing unit for transmission on the forward link is shown in FIG. At access point 110, TX CDM/OFDM processor 920 receives and processes the traffic data and signal transmissions and provides output samples as described below. Transmitter (TMTR) 922 processes (e.g., converts to analog, amplifies, filters, and upconverts) the output samples and produces a forward link signal transmitted via antenna 924. At terminal 120, antenna 952 receives the forward link signal from access point 110 and provides the received signal to receiver (RCVR) 954. Receiver 954 processes (e. g., filters, amplifies, downconverts, and digitizes) the received signals and provides received samples. The RX CDM/OFDM processor 960 processes the received samples in a manner complementary to the processing by the TX CDM/OFDM 920, as described below, and provides the decoded data to the terminal 120 and the received signal transmission. Controllers 930 and 970 direct operations at access point 110 and terminal 120, respectively. The memory 932 and 972 store the program code and data for the access point 110 and the terminal device 120, respectively. Figure 10 shows a block diagram of a TX CDM/OFDM processor 920a, which is designed for one of the TX CDM/OFDM processors 920 of Figure 1. Processor 920a includes (1) a CDM processor 1010 that generates CDM waveforms that carry CDM data and consumes data, and (ii) an OFDM processor 1050 that generates OFDM waveforms that carry OFDM data. Within the CDM processor 1010, the encoder/interleaver 1012 receives the traffic data to be transmitted using the 118974.doc -21 - 1336188 CDM to encode the traffic data based on the _ encoding mechanism, and interleaves (or reorders) the encoded Information. The mapper mapper maps the interleaved data to the data symbols based on a modulation mechanism. The demultiplexer (Demux) 1〇16 demultiplexes the data symbols into multiple (for example, 16) streams. The Walsh cover unit 1 覆盖 18 covers or channels each data symbol stream with different "chip Walsh codes to obtain a corresponding data chip stream. The summer 1020 pair is used for multiple wales. Multiple (eg, 16) data chip streams are summed and the CDM data is provided at the chip rate. The τχ processor 1G22 receives the signal transmission with the mMAC segment and the pilot for the pilot segment. The data is generated at the chip rate for the consumption segment. The TDM multiplexer (Mux) 1024 receives the CDM data from the summer device and the consumption data from the processor 〇22, and carries the CDM. The CDM data is provided in the traffic section of the data, and the consumption data is provided in the consumption section. The multiplier 1026 multiplies the output of the multiplexer 1024 by the pseudo-noise (pN) sequence for the access point and encodes the code. The slice rate provides an output chip. The pulse shaping filter 1028 filters the output chips and provides a cdm waveform for an HRpD carrier. Multiple execution individuals of the CDM processor can generate multiple HRpD carriers for multiple CDM waveforms. These multiple CDM waveforms can be upconverted to the digital or analog domain to Appropriate frequency. Within the OFDM processor 1050, the encoder/interleaver 1 〇 52 receives the traffic information to be transmitted using OFDM to alpha, encodes the traffic data, and interleaves the encoded data. The symbol mapper 1〇54 maps the interleaved alternatives to the data symbols. The symbol-to-subcarrier mapper 1〇56 maps the data symbols to the subcarriers for OFDM. The zero insertion unit 1〇58 is not used for 118974. Doc -22- OFDM subcarriers (eg, subcarriers, null subcarriers, and guard subcarriers corresponding to the CDM traffic section and the consumption section) are inserted with a zero symbol (which has a signal value of zero). Discrete Fourier An inverse transform (IDFT) unit 1060 performs a K-point IDFT on the data symbols and zero symbols for the K total subcarriers in each OFDM symbol period and provides a useful portion containing K time domain samples. K depends on the OFDM symbol Digitally and given for normal OFDM symbols and long OFDM symbols in Tables 1 and 2. The Cyclic Preamble Insertion Unit 1062 copies the last C samples of the useful portion and appends these C samples to the front of the useful portion so that Form one at sample rate There are K+C samples of OFDM symbols. The sample rate can be n times the chip rate, where η can be equal to 1, 2, 3, 4, etc. The repeated part is called the cyclic preamble and is used against the frequency selection. The ISI caused by the fading. The windowing/pulse shaping filter 1064 windowizes and filters the samples from unit 1062 and provides an OFDM waveform. The summer 1 〇7 〇 pairs the CDM waveforms from the CDM processor 1010 and from the OFDM processor The OFDM waveforms of 1050 are summed and provide an output waveform.Figure 11 shows a block diagram of a TX CDM/OFDM processor 920b, which is another design of the TX CDM/OFDM processor 920 of Figure 1. Processor 920b maps the CDM data to subcarriers for CDM and maps the OFDM data to subcarriers for OFDM. Processor 920b then generates an output waveform based on the mapped CDM data and OFDM data. Within processor 920b, TX CDM processor 1110 receives the traffic data, signal transmissions, and pilots to be transmitted using the CDM and provides output chips. Processor 1110 can include units 1012 through 1026 in FIG. The DFT unit m2 performs an L-point 118974.doc • 23 - 1336188 DFT for the output chips in each OFDM symbol period and provides L frequency-domain symbols for the L sub-carriers. L is the number of subcarriers corresponding to an HRPD carrier and may depend on the number of 〇fdm symbols. The encoder/interleaver 1120 and the symbol mapper 1122 process the traffic data to be transmitted using the FDM and provide the data symbols. The symbol-to-subcarrier mapper 1130 maps the frequency domain symbols from the DFT unit 1 Π 2 to the 钊 carrier for cdm and further maps the data symbols from the symbol mapper 丨丨 22 to the subcarriers for OFDM. Zero insertion unit 1132 inserts a zero symbol on subcarriers (e.g., null and guard subcarriers) that are not used for CDM or OFDM. The IDFT unit 1134 performs a K-point 1DFT on the K symbols for each 0Fdm symbol period and provides a useful portion containing K time-domain samples. The loop preamble insertion unit 丨 136 inserts a loop preamble into the useful portion and provides a 〇 FDM symbol containing K + c samples at the sample rate. Windowing/pulse shaping filter 1138 windowizes and filters samples from unit 1136 and provides an output waveform. Filter 1138 can provide steeper spectral attenuation than filter 1 〇 64 in Figure 1 , which allows for better utilization of the spectrum configuration. Figure 12 shows a block diagram of an RX CDM/〇fdm processor 960a, which is designed for one of the rx CDM/OFDM processors 960 of Figure 9. The processor 96A can be used to receive an output waveform generated by the TX CDM/OFDM processor 920a of FIG. To recover the CDM data, the filter 1212 obtains the received samples from the receiver 954 'filtering the received samples to remove spectral components outside the HRPD carrier of interest, performing a self-sample rate to chip rate conversion, and Provide filtered chips. The multiplier 1214 multiplies the filtered chip by the PN sequence 118974.doc • 24· used by the access point and provides 耠 by incrementing μ and inputting the chip. The TDM demultiplexer ι 216 provides an input chip eight main channel estimator 1218 for the pilot segment, and the input chip of the MAC segment is used to ', 5, and consumes the processor, and is provided for carrying the CDM The input sentence of the pg 〇 ° ° ° segment is sent to the Walsh solution cover unit 1222. Juicer 1218 derives a channel estimate based on the received pilot. Unit 122 _ 222 盍 解 or de-channelization (dechanneiiz is used for parent-used CDM, sb νι_ ^ 夭 什 的 的 的 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且The received symbol y body demodulator (Demod) 1226 of all Walsh codes performs coherent detection on the received symbols with channel estimates and provides a vertical axis _ from the Bayesian 唬 estimate, the data symbol estimates For the estimation of the data symbols transmitted in CDM, the deinterleaver/decoder 1228 deinterleaves and decodes the data symbol estimates and provides decoded data for (10). The RX (four) processor mo processes the MAC segments. Transmitting the chip and providing the received signal transmission. To recover the OFDM data, the cyclic preamble removal unit 1252 obtains K+c received samples in each OFDM symbol period, removing the cyclic preamble, and Providing K received samples for the useful portion. DFT unit 1254 performs a point DFT on the K received samples and provides one received symbol for κ total subcarriers. Symbol to subcarrier demapping Demappe〇1256 obtained for κ The received symbols of the total subcarriers, the received data symbols for the subcarriers for OFDM are provided to the data demodulator 1258, and the received pilot symbols are provided to the channel estimator 1218. The data demodulator 1258 performs data detection on the received data symbols with channel estimates from channel estimator 1218 (eg, matching filtering, etc.) and provides data symbol estimates, which are estimated by pairs of data symbols. Estimation of data symbols transmitted in OFDM. Deinterleaver/decoder 1260 deinterleaves and decodes the data symbol estimates and provides decoded data for OFDM. Figure 13 shows a block diagram of an RX CDM/OFDM processor 960b, the processor Another design of the RX CDM/OFDM processor 960 of Figure 9. The processor 960b can be used to receive an output waveform generated by the TX CDM/OFDM processor 920b of Figure 11. In the processor 960b, the loop preamble The item removal unit 1312 obtains K+C received samples in each OFDM symbol period, removes the cyclic preamble, and provides K received samples for the useful portion. 0? unit 1314 to 1<; The received samples perform 1 and 0 and provide K received symbols for K total subcarriers. The symbol to subcarrier demapper 13 16 obtains received for K total subcarriers. The symbol, the received symbols for the subcarriers for the CDM are provided to the IDFT unit 1320, and the received symbols for the subcarriers for OFDM are provided to the data demodulator 1330. To recover the CDM data, the IDFT unit 1320 performs L-point IDFT on L received symbols for sub-carriers for CDM in an OFDM symbol period and provides L time-domain samples. RX CDM processor 1322 processes time-domain samples and provides received signal transmission And decoded data for CDM. Processor 13 22 may include units 1214 through 1228 in Figure 12. To recover the OFDM data, the data demodulator 1330 performs a data detection on the received symbols from the demapper 13 16 with a channel estimate and provides a data symbol estimate. Deinterleaver/decoder 1332 deinterleaves and decodes the data symbol estimates. And Decoded Data for OFDM is provided 〇 118974.doc -26 - For the sake of clarity, various aspects of the technology have been specifically described for the transmission of CDM and OFDM into the HRPD system. These techniques can also be used in other combinations of Xigong mechanisms, such as sc_FDM, CDM and TDM, and 〇FDM, TDM, and 〇FDM. These techniques can also be used with other wireless communication systems and for forward and reverse links. In wireless systems, ensuring reliable data packet delivery on each individual transmission can be inefficient. Inefficiency is especially evident in systems where the basic channel conditions are transmitted from one transmission to another. For example, in an OFDM system, there may be a wide variation in the received signal-to-noise ratio (SNR) between frames/packets, making it difficult to guarantee a small frame error rate (FER) for each packet transmission. And inefficient. This difficulty and inefficiency also applies to other communication systems employing orthogonal multiple access techniques including, but not limited to, TDMA, FDMA, and CDM. In such communication systems, a packet retransmission mechanism such as an Automatic Retransmission/Repetition Request (ARQ) procedure can be used to help reduce such inefficiencies. However, ARQ procedures may cause higher packet latency because each packet may take an average of longer to pass β. In general, large packet latency may not be a significant problem for data traffic, but It may be detrimental to voice traffic or other types of applications that require low latency in information transmission. In addition, it is expected that the packet transmission latency will increase as the number of users in the system continues to grow. Therefore, to improve system capacity (e.g., based on system throughput or the number of users using the system at the same time, etc.), the transmission latency should be kept low or small. The ARQ typically includes an acknowledgment/negative acknowledgment (ACK/NACK) signal to indicate whether the terminal has successfully received the 118974.doc -27- 1336188 - packet. As a non-limiting example, the terminal machine checks: the check algorithm (such as the hash function two:: the seal... such a hash function is successfully evaluated by the loop c, and (iv) all the bit systems can issue one If the ACKe indicating that the terminal does not need to retransmit the packet is CRC = evaded, it may not be *+ in the packet; all the bits in the 均 are correct and the terminal sends out a different terminal and needs to retransmit the packet. The NACKe uses the packet transmission on the forward keyway, which knows the full slot to the link towel. The half-slot transmission results in a larger granularity of L and (result) a greater chance of successfully transmitting smaller packets. Although the latency may be the same, the smaller granularity means a smaller data size per sub-paeket and a greater chance of transmitting each sub-packet without any transmission of any given sub-packets. The half slot may transmit a packet or sub-packet (ie, a portion of the 'package) depending on the packet size and the half-slot payload size. As used herein, "package" generally refers to the payload or half-slot of the slot. Payload. - familiar with this The skilled artisan will recognize that a packet defined by a slot such as ifcb may include a subpackage of a data packet or a packet of a conventional data packet. Figure 14A illustrates packet transmission for a conventional full slot packet protocol. Figure i4B illustrates the use of an embodiment in accordance with the present invention. Packet transmission of the half-slot packet protocol. In Figure 14A, each packet (or sub-packet) occupies one slot and the transmission channel is configured with four interlaces to indicate that there may be a specified or different terminal in the interlace The data packet is wrapped in four different streams.

Il8974.doc •28· 1336188 As soon as the packet is transmitted from the access point to the terminal, the terminal may have to spend two slots to start responding with an ARQ containing ACK/NACK information. As depicted in Figure 14A, the ARQ can be half a slot in duration and passed back on the reverse link. Therefore, the earliest opportunity for an access point to receive a re-sent packet is the four packets after the original packet is sent. As a result, the four interlaces allow for determining whether any given stream is to send a new packet or resend the previous packet based on the ACK/NACK information.

As shown in FIG. 14A, the access point transmits a packet 封, a packet 2, a packet 3, and a packet 4 in the first interlace. During the packet 4 time, the terminal that receives and decodes the packet responds with the ARQ1 containing the ACK/NACK information for the packet 1. Therefore, using the ACK/NACK information, the access point can receive the ACK. The packet i is sent out as a new packet for the first data stream, or the previously transmitted packet for the first data stream is retransmitted upon receipt of the NACX. Similarly, during packet 1, during the time, one is sent for the second data stream.

The ARQ2 of the packet 2 and the access point may respond with a new packet or a retransmission packet at the time of the packet 2. Figure 14B illustrates packet transmission for use with a half slot packet protocol in accordance with an embodiment of the present invention. In FIG. 14B, each packet (or sub-packet) occupies half of the slot and the transmission channel can be (as a non-limiting example) illustrated with eight interlaces. There may be data packets assigned to the same or different end in the interlace. People have a different stream. Thus, embodiments of the present invention allow for more data streams to be interleaved within a == four-slot block. In addition, the half-slot granularity means a larger chance of the parent-child packet and the larger chance that the packet will be correctly transmitted without any subsequent transmission of any given packet. H8974.doc •29· 1336188

As shown in Figure 14B, the access point sends a packet 8 in the first interlace. During the packet 7 time (which is the same latency as the conventional stream of Figure 14A), the terminal that receives and decodes packet 1 is used for packetization! The ARQ1 containing the Ack/nack information responded. Therefore, using ACK/NACK information, the access point can send out packet 1 as a new packet for the first data stream upon receiving the ACK, or resend the previous transmission for the first data stream upon receiving the NACK. The package. Similarly, during packet 8 time, an ARQ2 for packet 2 from the second data stream is sent, and the access point can respond with a new packet or a retransmission packet at time 2, at time. As described for the eight feet (1) and ARQ4, a similar mechanism can be used for each half slot packet.

In addition, although not shown in a single figure, the configuration of Figure 14A with four interlaces of full slots can be combined with eight interleaving of half-slots as shown in Figure 14B as a non-limiting example, in the figure The half-slot packages 3 and 4 in 14B can be combined into a single-to-slot package. As a result, the ARQ for the full slot packet will appear at ARQ3 time and there will be no ARQ4. Alternatively, any given four-slot section may include four staggered or half-sloted interlaces of the full slot. In other words, as a non-limiting example, four of the full slots may have eight staggered half-slots. The eight-interlace of the half-groove may have four interlaces of the full slot. Figure 15 illustrates various modulation orders associated with the payload size and the number of retryes that may be used in embodiments of the present invention. Whenever an access point has to resend a packet, the access point can change the modulation to have a better chance of successfully transmitting the packet. In addition, the terminal can measure the quality of the forward link channel and transmit the information to the access point. The access point causes ^ to use the received channel conditions to predict the transmission format of the cipherable text and the rate at which the packet is transmitted. As an unrestricted 118974.doc •30· U36188 The example terminal can use the Channel Quality Feedback Channel (CQICH) to deliver the best channel quality measurement to the base station. The channel quality can be measured in terms of carrier interference (C/Ι) ratio based on the received forward link signal. The C/I value can be mapped to the Channel Quality Indicator (CQI) symbol. In addition, the terminal can provide data rate control (DRC) information to access resources based on, for example, CM measurements from previous forward link transmissions. The access point can use the DRC information to determine what type of modulation is used for the packet after receiving the DRC information. The spectral efficiency is determined by a modulation mechanism. Various modulation mechanisms are available for data transfer. Each modulation mechanism is associated with a signal distribution (signal constellati) that contains a 'signal point', among which. Each signal point is identified by a composite value boundary for each signal point and by a B-bit binary value, wherein for the symbol mapping, the code bits 待 to be transmitted are first grouped into B code bits. Each group of the group of β B code bits forms a B-bit binary value mapped to a particular signal point, and then transmits the signal point as a modulation symbol of the same group of code bits. Each modulation symbol thus carries information for B code bits. Some non-limiting example modulation processes that can be used in embodiments of the present invention are quadrature phase shift keying mechanism (Qpsk), 8-phase shift keying mechanism (8_PSK), and 16 quadrature amplitude modulation (i6 qam) and 64. QAM. Therefore, as an example from Fig. 15, for the payload size of 4096 bits when the packet is transmitted for the first time, the packet can be modulated by the modulation order 6 (i.e., QAM). If the packet needs to be resent, the packet can be sent again with a modulation order of 6 (i.e., 64 QAM) when the packet is sent for the second time. However, if 1I8974.doc 31 is required to resend the packet for the first time (that is, the third modification is the modulation order 4 (ie, :transmission)' then the access point will be modulated to recognize that Small effective negative cropping) ° is generally familiar to the person skilled in the art and is still within the range of half-slot packet size. 'You can use a smaller modulation order. The achievable combined rate of the various loads A and the number of retests. The protocol rate on Figure J 6 corresponds to the payload size, number of transmissions, and modulation order from Figure 15. =17 shows - the block diagram of the access point and a terminal. In addition to the operation blocks used for the transmission and reception of the reverse link, this block diagram is shown in Figure 1. The functional description of the forward link described above with respect to Figure 9 is equally applicable to the diagram. 17. For the reverse link, in the terminal, the controller 97() uses the data from the U CDM/OFDM processor 96() and determines if the packet from the half slot has been successfully received as explained earlier. The controller 970 & χ data processor 980 then combines the ARQ and sends it to the transmitter (TMTR) 982 for transmission to the access point via antenna 952. On the access point side, the receiver (RCVR) 942 receives the reverse link information via the antenna 924. The RX data processor 940 and controller 930 decode the ARQ to retrieve information such as ACK/NACK information, such as CQI forward link quality information, and data rate control information such as drc. Using a combination of DRC, CQI, and ACK/NACK information, the controller can decide whether a packet for the next channel should be sent with a different modulation mechanism. Figure 18 shows a process for transmitting and receiving a half slot packet. The process element on the left side is the access point 118974.doc -32- 1336188 process (10)' which is executed by the access point and the process element on the right side is the terminal machine process mo which can be executed by the terminal. The illustrated process is for transmitting and (possibly) retransmitting a given packet for a given data stream. As would be appreciated by those skilled in the art, it will be recognized that there are many Packets and the sending and monitoring of multiple streams involve many other processes.

The packet transmission process can begin at process 1702 by transmitting DRC information from the terminal to the access point. Alternatively, the access point can begin processing a packet without DRC information. This is especially true for subsequent packets in a data stream. From the start-to-start point, process 1752 determines the data rate and modulation mechanism for the packet. This determination can be affected by the DRC information (if it exists) and the payload size. Process 1754 then sends the packet in the half slot to the terminal. Of course, other processes can be occurring to fill other traffic segments or half slots in any given slot to compensate for transmission.

Process 1704 directs the terminal to demodulate and decode the received slot and, in particular, demodulate and decode the half slot of interest for the packet. Process 1706 determines packet integrity, which may include performing a CRC to determine if the data was successfully received, analyzing channel quality to derive a CQI, or a combination thereof. Decision block 1708 indicates that retransmission may be required if a bit error is received. If retransmission is required, then process 1710 defines that a NACK should be sent. If no retransmission is required, then process 1712 defines that an ACKe procedure 1714 should be sent to indicate the transmission of an ARQ containing at least ACK/NACK information. ARQ can also contain other information such as CQI information and DRC information. Decision block 1756 indicates whether the access point determines whether to receive the ACK or is part of the ARQ. If an ACK is received, the process exists because 118974.doc • 33· 1336188 is not required to resend the current packet. For subsequent packets in the data stream, the process will repeat as it enters the access point process 1750 or the beginning of the terminal process 1700. If a NACK is received, the process loops to 1752 to determine the data rate for the packet. The data rate on the reverse loop determines the effect of the combination of the number of retries (not shown in Figure 18), payload size, DRC information (if it exists), and CQI information (if it exists). Those skilled in the art will appreciate that information and signals can be represented using any of a variety of different techniques and techniques. For example, data, instructions, commands, information, signals, bits, symbols may be referred to by the above description by voltage, current, electromagnetic wave, magnetic field or magnetic particle, light field or light particle or any combination thereof. And chips. It will be further appreciated by those skilled in the art that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein can be implemented as an electronic hardware, a computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether the functionality is implemented as hardware or software depends on the particular application and design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in varying ways for each particular application, but should not be construed as a departure from the scope of the disclosure. A general purpose processor, digital signal processor (DSp), special application integrated circuit (ASIC), field programmable gate array (FpGA), or other programmable logic set designed to perform the functions described herein. The discrete logic or electrical 118974.doc • 34- UJ6188 crystal logic, discrete hardware components, or any combination thereof, implements or performs various illustrative logic blocks, modules, and circuits described in connection with the disclosure herein. The general purpose processing H can be a micro-processing, but in the fourth embodiment, the processor can be any conventional processor, controller, microcontroller or state machine. The processor can also be implemented as a combination of computing devices, for example, a Dsp and-microprocessor, a plurality of microprocessors, a combination of one or more Dsp cores, or any other such configuration. . The steps of the method or algorithm described in connection with the disclosure herein may be embodied in a hardware, in a software module executed by a processor, or in a combination of the two. The software module can reside in RAM memory, flash memory, ROM memory, epr〇MB memory, eepr〇m memory, scratchpad, hard disk, removable disk, (:]〇_ 11 or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write to the storage medium. In an alternative embodiment, the storage medium may be integrated into the processing. The processor and the storage medium may reside in the ASIC. The ASIC may reside in the user terminal. In an alternative embodiment 10, the processor and the storage medium may reside as discrete components. In addition, the software module can be transferred to a terminal or access point for storage and execution thereof. While the invention has been described with reference to the specific embodiments, it should be understood that the embodiments are illustrative The scope of the present invention is not limited to the embodiments. Many variations, modifications, additions and improvements to the above-described embodiments are possible. Considering such changes, modifications, additions and improvements are as follows in the following patent application.The scope of the invention as detailed in the following paragraphs 118974.doc -35- 1336188 [Simple description of the diagram], Figure 1 shows a high rate packet data (HRPD) communication system. / Figure 2 shows a single carrier slot structure supporting CDM. Figure 3A shows a single carrier slot structure supporting OFDM. Figure 3B shows a single carrier slot structure supporting CDM and OFDM. Figure 4 shows a multi-carrier slot structure supporting CDM. Figure 5 shows a support for CDM and OFDM. Carrier Slot Structure Figure 6 shows another multi-carrier slot structure supporting CDM and OFDM. Figure 7 shows a slot structure supporting OFDM and CDM. Figure 8 shows a slot structure supporting OFDM in a 5 MHz spectrum configuration. 9 shows a block diagram of an access point and a terminal. Figure 10 shows one design of a transmission (TX) CDM/OFDM processor. Figure 11 shows another design of a TX CDM/OFDM processor. One design of a Receive (RX) CDM/OFDM processor is shown. Figure 13 shows another design of an RX CDM/OFDM processor. Figure 14A shows a packet transmission for a conventional full slot packet protocol. Figure 14B shows a packet transmission according to the present invention. The packet of the embodiment for using the half-slot packet protocol Figure 15 shows the various modulation orders associated with the payload size and the number of retries. Figure 16 shows the various data rates achievable in relation to the payload size and the number of retries. Figure 17 shows an access point and a terminal. Block diagram. 'Figure 18 shows a process for transmitting and receiving half-slot packets. H8974.doc -36- 1336188 [Main component symbol description]

1 a Traffic segment lb Traffic segment 2a Traffic segment 2b Traffic segment 2c Traffic segment 2d Traffic segment 2e Traffic segment 2f Traffic segment 3 a Traffic segment 3b Traffic Section 4a Traffic Section 4b Traffic Section 4c Traffic Section 100 HRPD Communication System 110 Access Point 120 Terminal 130 System Controller 200 Single Carrier Slot Structure 300 Single Carrier Slot Structure 302 Single Carrier Slot Structure 400 Multicarrier Slot structure 500 multi-carrier slot structure 600 multi-carrier slot structure 118974.doc -37- 1336188

700 slot structure 800 HRPD slot structure 920 TX CDM/OFDM processor 920a TX CDM/OFDM processor 920b TX CDM/OFDM processor 922 transmitter (TMTR) 924 antenna 930 controller 932 memory 940 RX data processor 942 receiver (RCVR) 952 Antenna 954 Receiver (RCVR) 960 RX CDM/OFDM Processor 960a RX CDM/OFDM Processor 960b RX CDM/OFDM Processor 970 Controller 972 Memory 980 TX Data Processor 982 Transmitter (TMTR) 1010 CDM processor 1012 encoder/interleaver 1014 symbol mapper 1016 demultiplexer (Demux) 118974.doc -38 - 1336188 1018 Walsh overlay unit 1020 summer 1022 TX processor 1024 TDM multiplexer ( Mux) 1026 Multiplier 1028 Pulse Forming Chopper 1050 OFDM Processor 1052 Encoder/Interleaver 1054 Symbol Mapper 1056 Symbol to Subcarrier Mapper 1058 Zero Insertion Unit 1060 Discrete Fourier Transform (IDFT) Unit 1062 Loop Preamble Insertion unit 1064 windowing/pulse shaping filter 1070 summer 1110 TX CDM processor 1112 DFT unit 1120 encoder/interleaver 1122 No. Mapper 1130 Symbol to Subcarrier Mapper 1132 Zero Insertion Unit 1134 IDFT Unit 1136 Loop Preamble Insertion Unit 1138 Windowing/Pulse Shaping Filter 118974.doc -39- 1336188 1212 Filter, Waver 1214 Multiplier 1216 TDM Solution Multiplexer 1218 Channel Estimator 1220 RX Consumable Processor 1222 Walsh Solution Cover Unit 1224 Multiplexer 1226 Data Demodulator (Demod) 1228 Deinterleaver/Decoder 1252 Cyclic Preamble Removal Unit 1254. DFT Unit 1256 Symbol to Subcarrier Demapper 1258 Data Demodulator 1260 Deinterleaver/Decoder 1312 Cyclic Preamble Removal Unit 1314 DFT Unit 1316 Symbol to Subcarrier Demapper 1320 IDFT Unit 1322 RX CDM Processor 1330 Data Demodulator 1332 Deinterleaver/Decoder Chi Logical Channel Ch2 Logical Channel Ch3 Logical Channel Ch4 Logical Channel 118974.doc -40-

Claims (1)

1336188 Patent Application No. 096106520 Replacement of Chinese Patent Application (September 99) X. Patent Application Range: 1' A type of packet is arranged in a slot for wireless communication - including: 199. 9. 2.-3⁄4 a device for replacing a page; a device that replaces a page, which includes a receiver that receives channel information from a remote station, the channel information including ACK/NACK (acknowledgement/negative confirmation) information; at least one processor, grouped The state is: generating an output waveform comprising at least one slot, each slot being segmented into two half slots, wherein at least half of the slots comprise a traffic segment; and the ACK/NACK information is decoded to determine whether the message should be Transmitting to the remote station; selecting code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM) for each of at least one of the traffic segments, wherein the FDM system Compatible with - high speed packet data (HRPD) time slot format and chip rate to achieve backward compatibility; and wherein the output waveform is included by the at least one traffic segment, each of the traffic areas '^ When the traffic segment selects the CDM, download the CDM data or use it for the service. The case of OFDM segment selection Carriage OFDM data; a memory 'coupled to the at least one processor; and a transmitter, which is configured for transmission via the output waveform. 2. The apparatus of claim 1, wherein the output waveform further comprises at least one additional slot, wherein the at least one additional slot contains another traffic segment selected from the group consisting of a packet and configured for a full slot, The other package is configured for the half slot and is self-contained for another package and configured for a full slot. 118974-990923.doc _1 — — 年 年 年 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Its combination. 4. The device of claim 1, wherein: the channel information further comprises a damage/decibel rate control information; and the second parameter is configured to respond to the data rate control 1 beta selection - Used for the first _ modulation of the traffic segment. 5. The apparatus of claim 1, wherein: the:-processor is further configured to generate the output waveform by a modulation associated with the traffic segment = payload size. 6. The device of claim 1, wherein: the at least one processor enters - .t _ ^ 乂, and is configured to not resend the traffic segment on the ACK/NACK information day -, - n ^ The situation is caused by a different modulation of one of the traffic sections - a new round-out waveform; and the transmitter is further used to transmit the new output waveform. 7. If the device is not selected, its φ Λ ^ "A different modulation system of the new output waveform, and second, the modulation is one at a lower data rate than the output waveform.竿〇8·If the device of the request item ,, complex φ 〃 f the different modulation is selected from the group consisting of quadrature phase shift keying, 8 phase shift keying, 16 groups, positive parental tweezers...4 orthogonal tune 9. The device of claim i, wherein: the channel information further includes a channel quality indicator; the at least - the processor is further configured to: interpret the channel quality indicator; and 118974-990923 .doc -2- 10. On the day of the month, the stomach is responsive to the quality of the channel that has been interpreted, and the new output waveform is generated by a different modulation for the subsequent (4) U; and (4) the device is further grouped. The state is used to transmit the new output waveform. : The device of claim 9 wherein the different modulation is selected from the group consisting of quadrature phase shifting, 8-phase shift keying, 16 quadrature amplitude modulation, and "quadrature amplitude modulation. 11. 12. 13. The device, wherein the at least one processor further comprises: a first signal segment and a second traffic segment and a consumption zone X output waveform, and a first traffic segment and the second Each of the traffic segments carries CDM data or 〇FDM data, and the consuming segment carries the consuming data. The device of claim 1, wherein the at least one processor is further configured to: Selecting cdm or OFDM for each of a plurality of traffic segments of the plurality of carriers; and generating the round-out waveform 'each traffic segment' including the plurality of traffic segments for the plurality of carriers Carrying CDM data or OFDM data. The apparatus of claim 1, wherein the at least one processor is further configured to: generate a first waveform comprising a traffic segment carrying CDM data; generating a message comprising carrying OFDM data a second waveform of the service segment; and based on the first waveform and the second wave The output waveform is generated. H8974-990923.doc m. 9. 93⁄4 一年月日 Revision Replacement Page 14. A device for arranging packets in a sub-time slot for wireless communication, comprising: at least one processor for Processing an input waveform comprising at least one slot, each slot being segmented into two half slots, wherein at least half of the slots comprise a traffic segment of a packet; processing the traffic segment to determine the traffic region Whether the segment is accurate; and generating ACK/NACK (acknowledgement/negative acknowledgement) information in response to processing the result of the traffic segment; wherein the input waveform is selected for use in at least one of the traffic segments Each of them selects code division multiplexing (CDM) or orthogonal frequency division multiplexing (OFDM), wherein the OFDM system is compatible with a high speed packet data (HRPD) time slot format and chip rate for backward compatibility And wherein the output waveform is included by the at least one traffic segment, each traffic segment downloads CDM data when CDM is selected for the traffic segment or downloads OFDM for the traffic segment OFDM data; a memory coupled to The at least one processor; and a transmitter for transmitting channel information including the ACK/NACK information. 15. The apparatus of claim 14, wherein the input waveform further comprises at least one additional slot, wherein the at least one additional The slot contains another traffic segment selected from a packet and configured for one full slot, from one packet and configured for half of the slot, and from another packet and configured for one Full slot. 118974-990923.doc 16. , 00.--^--2 3~ Year Month 曰 Correction replacement page such as request item 〖4 + a*, 'device' where the input waveform is further configured to be abundance The eight slots of the slot are AU 'W 乂 wrong, four slots of the full slot or a combination thereof. 17. 18. 19. 20. 21. The device of claim 14, wherein the at least one processor further generates data rate control information by the group bearer; and the data rate control information is included in the δHai channel information order . The apparatus of claim 14, wherein the at least one processor is further configured to: ~ analyze the received signal quality and generate a channel quality indicator in response to the received signal quality; and in the channel information Contains the channel quality indicator. The apparatus of claim 14, wherein the at least one processor is further configured to use a group of selected free quadrature phase shift keying, 8 phase shift keying, 16 quadrature amplitude modulation, and 64 quadrature amplitude modulation. Change to handle the traffic segment. The apparatus of claim 14, wherein the at least one processor is further configured to: determine whether to use code division multiplexing (CDM) or orthogonal frequency division multiplexing for at least one of the traffic segments in each half slot (〇fdm Processing the received samples to recover the CDM data transmitted in the traffic zone if the CDM is used; and processing the received samples to recover in the traffic zone if OFDiv is used The OFDM data sent in. The device of claim 20, wherein the at least one processor is further configured to: 118974-990923.doc 1336188, Μ, · 9. - Year Month Day Correction Replacement Page Processing §Hai and other received samples for use The received symbols for the subcarriers used by the traffic segment; and processing the received symbols to recover the OFDM data transmitted in the traffic segment. 22. The device of claim 2, wherein the at least one processor is further configured to: transition the received samples to obtain filtered samples for subcarriers for use by the traffic segment; The filtered samples to obtain input samples for the traffic segment; overlaying the input samples with a plurality of orthogonal code solutions to obtain received symbols; and processing the received symbols to recover The CDM data sent in the traffic segment. 23. The device of claim 20, wherein the at least one processor is further configured to: process the received samples to obtain frequency domain symbols for a plurality of subcarriers; processing for the traffic segment Using the frequency domain symbols of the subcarriers to obtain time domain samples; overlaying the time domain samples with a plurality of orthogonal code solutions to obtain received symbols; and processing the received symbols to recover the traffic The CDM data sent in the section. 118974-990923.doc 1336188 DECEMBER MODIFICATION Replacement I 24. A communication system comprising: at least an access point comprising: an access point receiver that receives information including ACK/NACK (acknowledgement/negative acknowledgement) Channel information; at least an access point processor for: • generating a wheeled waveform comprising at least one slot, each slot being segmented into two half slots, wherein at least half of the slots comprise a traffic segment; And # ACK/NACK information to determine whether the traffic segment should be retransmitted; • selecting a chip code (CDM) or orthogonal segment for each of at least one of the primary half slots Frequency multiplex (〇FDM), wherein the OFDM system is compatible with the _ high speed packet data (HRpD) time slot format and the chip rate to achieve backward compatibility; and wherein the output waveform is included by the at least one of the traffic segments , each - the traffic segment downloads CDM data when CDM is selected for the traffic segment or transmits OFDM data when 〇fdm is selected for the traffic segment; - access point memory, the box is connected to The at least one accessor; and an access point transmitter for transmitting the output waveform And at least one terminal, comprising: - a terminal receiver for receiving the output waveform; at least one terminal processor for: processing the output waveform including at least - slot, each slot fine U8974 -990923.doc ”99.. -9. ο ^ Year Month Day Correction Replacement Page is segmented into two half slots, at least half of which contain the traffic segment; processing the traffic segment to determine the traffic zone Whether the segment is accurate; and generating ACK/NACK (acknowledgement/negative confirmation) information in response to processing the result of the traffic segment; a terminal memory coupled to the at least one terminal processor; and a terminal The transmitter 'is used to transmit the channel information including the Ack/NACK information. The communication system of claim 24, wherein the output waveform further comprises at least one additional slot, wherein the at least one additional slot contains another traffic segment selected from a packet and configured for a full slot From one package and through the group for half of the tank, and from another package and configured for a full tank. 26. The communication system of claim 24, wherein the round-out waveform is further configured as eight interlaces of half slots, four interlaces of full slots, or a combination thereof. The communication system of claim 24, wherein: the channel information further comprises data rate control information; and the at least one access point processor is further configured to select a message for the message in response to the data rate control information The first change of the service section. 2 8 _ The communication system of claim 2, wherein: the at least one access point handles the remnant of the vacancy, and the progress is configured by a mouth associated with a payload size of the one of the traffic segments The modulation of μ + j W is turned off to produce the output waveform. 118974-990923.doc 29. The communication system of claim 24, wherein: the /to/access point processor is further configured to: in the ACK/NACK information; ^匕-士丄w, a should not resend the traffic segment In the case, the new output waveform of the seat king is adjusted differently for one of the traffic sections; and the transmitter further fine-tune the energy of the Nikken field. The heart is used to transmit the new output waveform. J〇·If you request item 29, it is a secret. The different modulation of the new output waveform is selected to be a ratio of the number r to the ''-rounded waveform' at one of the lower data rates. 3 1. As requested in item 29, the communication system of Gu Ganshi a ',,, first,, and middle shai is selected from orthogonal phase shift keying, 8-phase shifting batch 1 a X mountain control, 16 The group consisting of positive father amplitude modulation and 64 quadrature amplitude modulation. 32. The communication system of claim 24, wherein: the channel information further comprises a channel quality indicator; the at least one access point processor is further configured to: interpret the channel quality indicator; Responding to the channel σ that has been interpreted by 5 Hai and * wearing the martyrdom. The muzzle does not match and is generated by a different modulation for the subsequent traffic segment - a new round-out waveform: and the transmitter is further configured to pass the new round-out waveform. J3', as in the communication system of claim 32, the bean, T, and T 亥 modulation is selected from the group consisting of orthogonal phase shift keying, 8-phase shift keying, 16 orthogonal %^, and 64 orthogonal amplitude modulation. . 34. The communication system of claim 24, wherein the eve-access point processor is further configured to: generate a first traffic segment and a - _ currency-speaking segment and a consumption I18974- 990923.doc 1336188 A month to correct the output waveform of the replacement f segment, each of the first traffic segment and the second traffic segment carries CDM data or OFDM data, and the consumption region The section carries the consumption data. 35. The communication system of claim 24, wherein the at least one access point processor is further configured to: select CDM or for each of a plurality of traffic segments for the plurality of carriers OFDM; and the packet 3 is generated for the output waveform of the plurality of traffic segments of the plurality of carriers, each of the traffic segments carrying CDM data or OFDM data. The communication system of claim 24, wherein the at least one access point processor is further configured to: generate a first waveform comprising a traffic segment carrying CDM data; generating a traffic segment including the carrier OFDM data a second waveform; and generating the output waveform based on the first waveform and the second waveform. A method in a communication system, comprising: generating an output waveform at an access point, the output waveform comprising at least one slot 'each slot is segmented into two half slots, wherein at least half of the slots are included One of the traffic segments of the packet; selecting a code division multiplexing (CDM) or orthogonal frequency division multiplexing (〇FDM) for each of at least one of the traffic segments in each of the half slots, wherein the FDM system The slot format and the chip rate are compatible with a high speed packet data (hrpd) to achieve backward compatibility; and wherein the output waveform is included by the at least one traffic segment, each of the services I18974-990923.doc -10 · 1336188 ' defeat 9. 2Λ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ At the machine: processing the output waveform to retrieve the traffic segment; processing the traffic segment to determine whether the traffic segment is accurate; and generating an ACK/NACK in response to processing the traffic segment (confirmation/negation Confirmation) information; and transmission including the ACK/NACK information Information; interpreting the ACK / NACK information at the access point to determine whether a retransmission of the traffic segment information. The method of claim 37, wherein the output waveform is further generated to include at least one additional slot, wherein the at least one additional slot contains another traffic area k selected from a packet and configured for One full slot, one from another package, and one configured for half of the slot, and one another from another package and configured for a full slot 0. 39. As for the method of β month 37, where the output The waveform is further produced as eight interlaces of half slots, four interlaces of full slots, or a combination thereof. 40. The method of claim 37, further comprising selecting a first modulation for the traffic segment in response to data rate control information included in the channel ^. 4 1 _ As in the method of claim 3 7 ,, the output waveform is further generated by a modulation associated with the payload size of the signal. 42. The method of claim 37, further comprising: X ACK/NACK information indicating that the traffic segment should be retransmitted 118974-990923.doc 1336188 43. 44. 45. 46. 47. 48. The daily correction replacement page is generated by a different modulation of one of the traffic segments to generate a new round-out; and/or the new output waveform is transmitted. The method of claim 42, wherein the different modulation of the new output waveform is selected to be at a lower data than one of the output waveforms: a method of determining a parameter 42, wherein The different modulation systems are selected from the group consisting of quadrature phase shift keying, 8-phase shift keying, 16 quadrature amplitude modulation, and 64 quadrature amplitude modulation. The method of claim 37, further comprising: decoding a channel quality indicator included in the channel information; generating, in response to the interpretation, a different modulation for the subsequent traffic segment - new Output waveform; and transmit the new output waveform. The method of claim 45, wherein the different modulation is selected from the group consisting of quadrature phase shift keying, 8-phase shift keying, and 16 quadrature amplitude modulation gray 64 quadrature amplitude modulation. The method of claim 37, further comprising: generating the round-out waveform including a first traffic segment and a second traffic segment and a consumption segment, the first traffic segment and the first Each of the two traffic segments carries CDM data or OFDM data' and the consumption segment carries the consumption data. The method of claim 37, further comprising: 118974-990923.doc • 12· 1336188 99. 9. 9. η 月 月 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日 日Selecting cD]Vi or OFDM; and generating the round-out waveform including the plurality of traffic segments for the plurality of carriers, each of the traffic segments carrying CDM data or OFDM data. 49. The method of claim 37, further comprising: generating a first waveform comprising a CD1V [data segment of the data; generating a second waveform comprising a traffic segment carrying the 〇fdm data; and based on the The first waveform and the second waveform generate the output waveform. U8974-990923.doc