KR20070020071A - Method and system for providing autonomous retransmissions in a wireless communication system - Google Patents

Abstract

A transmitter that may have marginal power availability is enabled to autonomously retransmit previously transmitted frames containing the same data. The transmitter sends an initial frame to a base transceiver station (BTS) and immediately retransmits the same frame without regard to any ACK/NAK transmission from the BTS. The retransmissions are accumulated in the receiver and decoded after a sufficient quantity of the frame is transmitted. After receiving the last retransmitted frame the BTS sends an ACK/NAK to the transmitter that is accepted. ® KIPO & WIPO 2007

Description

METHOD AND SYSTEM FOR PROVIDING AUTONOMOUS RETRANSMISSIONS IN A WIRELESS COMMUNICATION SYSTEM}

The present invention relates to a digital wireless communication system. In particular, the present invention relates to a wideband code division multiple access (WCDMA) communication system. More particularly, the present invention relates to data transmission between a user equipment (UE) and a receiver in a WCDMA system.

The physical layer of WCDMA provides one or more transport channels for higher layers. Data from the transport channel is individually coded, multiplexed together and transmitted over the air to the receiving end. The transmission time interval (TTI) for a transport channel is the duration of data for which coding and interleaving are performed. For the frequency division scheme (FDD) mode, this also corresponds to the actual transmission time of the transport block within the transmission time interval TTI given in the air. In general, WCDMA frequency division scheme (FDD) uplinks support transmission time intervals of 10 ms, 20 ms, 40 ms, or 80 ms, and the parameters are configured somewhat fixed per transport channel through higher layer signaling, which is relatively slow.

In the case of packet data transmission, data typically arrives at the physical layer in the form of a transport block with a fixed size of 336 bits, for example. This size cannot be changed easily or quickly and is typically fixed at the same value for all users in the system. One transport block is the smallest nonzero amount of data that can be transmitted on a transport channel within one transmission time interval, which provides the lowest nonzero data rate that can be supported. For a given transport block size, the longer the transmission time interval, the lower the non-zero data rate. At the same time, low latency is always important for packet data systems. Therefore, the shorter the transmission time interval, the better the probability of delay.

In a wireless communication system, the higher the data rate, the greater the received power that must be maintained to maintain the appropriate received energy per information bit. Therefore, there is a maximum, terminal-to-base station distance, where any data rate can be reliably supported. At this distance, the terminal transmits at full power to overcome the propagation loss from the terminal to the base station and also maintains the maximum required received power for reliable communication at the data rate considered. Therefore, the further the terminal is from the base station, the lower the maximum possible data rate. Typically, cellular networks are planned for any minimum (uplink) bit rate, such as 64 kbit / s, by placing the base stations at a suitable distance from each other.

In order to ensure error-free delivery of received packets to the application layer, (wireless) communication systems typically use hybrid automatic response requests (ARQs). In a system using a hybrid automatic response request (ARQ), the data is coded and sent to the receiver. The receiver attempts to decode the received data and if an error is found in the received data, the receiver requests retransmission of the data unit from the transmitter. If no error is found in the decoding process, the received data unit is considered to be received correctly, the receiver sends an acknowledgment signal to the transmitter, and the received data unit passes through the higher layer. Therefore, (almost) error-free delivery of data units to higher layers can be provided.

Hybrid automatic response request (ARQ) mechanisms can be further enhanced by performing soft combining, i.e., the receiver buffers the wrongly received data unit and combines the buffered soft information with the soft information received due to retransmission (s). do.

A simplified diagram of the operation of the Automatic Response Request (ARQ) protocol is shown in FIG. To illustrate the purpose, this figure uses multiple independent stop-and-wait protocols in a similar manner, as is done for high speed downlink packet access (HSDPA).

The transmitter transmits one unit of data in the first frame. Along with the data, control information such as a hybrid automatic response request (ARQ) process number and a new data indicator are transmitted. Upon reception, the receiver attempts to decode the received signal and sends an ACK or NAK to the transmitter. In Fig. 1, the decoding process fails and the NAK is sent to request retransmission from the transmitter. The transmitter retransmits the data and this time with the new data indicator is set to indicate that this is a retransmission and the received signal must be soft coupled with the already buffered information to improve the likelihood of successful decoding. The concept of supporting process numbers is that multiple parallel stop-and-wait protocols can be used. Therefore, while attempting to decode the data that is sent in frame 1 and intended for the hybrid automatic response request (ARQ) process 1, the frames 2-4 are arranged in another hybrid automatic response request (ARQ) process, for example. Can be used for transfer to process 2-4.

In the Third Generation Partnership Project (3GPP), there is generally a discussion of how to enhance the performance of packet data services in the uplink. One of the main considerations is to reduce the delay. Substantial delay reduction is possible if a hybrid automatic response request (ARQ) with soft coupling is introduced and located at the base station, in which case the base station is incorrectly received from the terminal instead of trusting the slower, higher layer retransmission protocol. You can request a resend of. Additional delay reduction is possible if the minimum transmission time interval (TTI) is reduced to 10 ms to 2 ms.

In general, neither hybrid auto-response requests (located at the base station) nor 2ms transmission time intervals are supported by the uplink in WCDMA, but the introduction is generally discussed in 3GPP. The introduction of soft combining hybrid automatic response request (ARQ) is conceptually simple. The somewhat fixed transmission time interval (TTI) of 2 ms may be largely based on the current structure.

As described above, when the transmission time interval TTI is short, the non-zero minimum data rate is higher. Therefore, assuming that the maximum terminal transmission power does not change, the coverage of the terminal using the new 2 ms transmission time interval (TTI) may be affected compared to the terminal using the current 10 ms transmission time interval (TTI). With the example number above, the minimum transport block size of 336 bits, the smallest non-zero unit that can be transmitted on the uplink, is 33.6 kbit / s for the 10 ms transmission time interval (TTI) and in the 2 ms transmission time interval (TTI). For a minimum data rate of 168 kbit / s. Assuming that the network is planned for the typical value of 64 kbit / s coverage, data transmission at the cell edge can be guaranteed for a 10 ms transmission time interval (TTI), but not for a 2 ms transmission time interval (TTI). . This is inappropriate because when new features are introduced herein, there is no hope of replanning the network. In addition to coverage issues, it may also be the reason from the point of view of a radio resource management (RRM) point that can use non-zero data rates, which are significantly smaller than 168 kbit / s.

One solution to this problem is to switch from a 2 ms transmission time interval (TTI) to a 10 ms transmission time interval (TTI) while the terminal is in limited power. Because the transmission time interval (TTI) is generally a rather fixed parameter, higher layer signaling makes up the terminal in the case of slow processes that cannot adapt to the rapid power limitations occurring at the terminal due to rapid channel conditions. It is necessary for that. In addition, a network that typically does not consider the power state at the terminal must initiate reconfiguration; Situations in which the terminal cannot inform the network about restricting itself may prevent the terminal from communicating with the network reliably. Dynamic transmission time interval (TTI), that is, having the terminal autonomously change the transmission time interval (TTI) whenever there is a power limitation may be one solution. However, dynamic transmission time intervals (TTIs) are not suitable for the current WCDMA specification and can be an issue and / or complicated to introduce herein. This may also cause buffer handling problems at the time of switching the transmission time interval (TTI), e.g., if the transmission time interval (TTI) is switched to 2ms, retransmission of outstanding packets with a 10ms transmission time interval (TTI) That's how to handle it.

Another possibility may be to maintain a 2 ms transmission time interval (TTI) and may follow a hybrid automatic response request (ARQ) protocol and soft coupling. In this approach, the terminal will transmit data using a 2 ms transmission time interval (TTI) at the lowest non-zero rate even in a power-limited state. Since the received power is not large enough, the data cannot be reliably detected and almost always the terminal will request a retransmission. When retransmission occurs, the base station may perform soft combining of the retransmissions, and soft information buffered from previous transmissions is attempted. For each retransmission attempt, the energy collected per bit of information increases, and eventually the base station will be able to successfully decode the data. This solution follows the hybrid automatic response request (ARQ) mechanism; The mechanism is also proposed to be introduced for other reasons. This approach is therefore simple because it does not require any change in the configured transmission time interval (TTI). However, the drawback is that the additional delay from each retransmission attempt is a drawback, and it is a relatively serious drawback as one of the main reasons for introducing a hybrid automatic response request (ARQ) mechanism, and the 2 ms transmission time interval (TTI) reduces the overall delay. It is to let.

The present invention describes some possibilities for achieving longer transmission intervals, for example, in situations where the data rate is very high, other than minimum zero. Since the present invention is also based on hybrid automatic response request (ARQ) with soft coupling needed for other reasons, the transmitter can autonomously and quickly use a lower data rate than would otherwise be possible. An alternative to using higher layers to reconfigure transmitters / receivers can result in significantly slower and inefficient use of available resources. Although recognized as more complex than aspects of the present disclosure and (maybe) implementations, there are other alternatives that support multiple transmission time intervals (TTIs) (frame lengths) for a channel and allow the transmitter to autonomously select which TTI to use. It is possible. In addition, the described scheme can easily recognize a wide range of transmission intervals without any additional complexity. It is also possible to have the transmitter perform the initial transmission using multiple autonomous retransmissions (i.e. scanning multiple frames) and using conventional retransmissions that only scan a single frame (based on the received ACK / NAK). .

New features contemplating the nature of the invention are set forth in the appended claims. The present invention, however, can best be understood by reference to the detailed description of the illustrated embodiments, as well as in the preferred mode of use, as well as when reading the additional objects and advantages thereof with reference to the accompanying drawings.

1 is a diagram showing the operation of a conventional hybrid automatic response request (ARQ);

2 illustrates "autonomous" retransmission from a terminal not waiting for an ACK / NAK signal from a network, in accordance with a preferred embodiment of the present invention;

3 illustrates autonomous retransmission from a terminal that does not wait for an ACK / NAK signal from the network by including the remaining data flags, in accordance with a preferred embodiment of the present invention;

4 illustrates autonomous retransmission from a terminal without waiting for an ACK / NAK signal from the network by including the remaining transmission fields, in accordance with a preferred embodiment of the present invention;

5 shows the remaining data flags, such as part of TFCI signaling, in accordance with a preferred embodiment of the present invention;

6 is a block diagram of an ACK / NAK signal including whether data can be decoded from the (re) transmission received at the time the ACK / NAK signal is transmitted, in accordance with a preferred embodiment of the present invention.

The present invention is applicable to uplink enhanced WCDMA, which is generally in accordance with the standard of 3GPP. It can also be applied to other future standards. In the following description, which is for purposes of explanation and not limitation, specific details are set forth, such as specific architecture, interface description, and the like, for a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods omit unnecessary details in order not to obscure the description of the present invention.

Figure 2 illustrates autonomous retransmission from a terminal that does not wait for an ACK / NAK signal from the network in accordance with a preferred embodiment of the present invention. A method is proposed to solve the problem of the highest non-zero minimum data rate following hybrid automatic response request (ARQ), but there is no additional delay associated with waiting for ACK / NAK feedback from the receiver. The transmitter (user equipment) performs autonomous retransmission without waiting for the receiver to transmit the ACK / NAK signal and without causing a delay associated with the ACK / NAK signal. The transmitter transmits one data unit in frame 1 and repeats the data unit in successive frames. Data may be retransmitted in any number of frames in accordance with an implementation of the present invention; Note that the use of three frames in the figures is merely an illustrative example.

After receiving the first frame, if it contains a data unit (along with a hybrid automatic response request (ARQ) process number), the receiver starts to decode the first frame. When receiving a second frame that includes a repetition of the data unit, note that "autonomous retransmission" proceeds, noting that the transmitter indicates a transmission using the same hybrid automatic response request (ARQ) process number as in the previous frame. It is shown. Upon detecting “autonomous retransmission” in the second frame, the receiver stops decoding the first frame (unless decoding has already been completed), soft combines the second frame with the first frame, Start decoding the signal. Similarly, upon detection of the third autonomous retransmission, the receiver stops decoding, combines all three signals, and initiates a new decoding attempt. As noted above, using three frames is shown only for ease of understanding and does not mean limiting the number of frames that can be transmitted autonomously.

The hybrid automatic response request (ARQ) process number different from the previous frame is transmitted in the fourth frame, and when another process number is detected, the receiver determines that no additional autonomous retransmissions related to the second three frames are expected. The decoder completes the decoding of the combined data. The result of the decoding attempt is represented to the transmitter via ACK / NAK (or similar status report) as any hybrid automatic response request (ARQ) scheme.

3 illustrates retransmission from a terminal, where each of the retransmissions includes the remaining data flags, according to a preferred embodiment of the present invention. The method already shown in the graph enables the use of autonomous retransmissions, which will unnecessarily start the decoder of the receiver even if the frame is part of autonomous retransmissions. This can be solved by including the rest of the data flag along with the control information needed for the operation of the hybrid answering request scheme, such as, for example, a hybrid answering request (ARQ) process number and a new data indicator. If the remaining data flag is set to 'true', the receiver recognizes that autonomous retransmission will continue in the next frame and does not have to start the decoder, but only buffers the soft bits for this autonomous retransmission. In the third frame, the 'rest of data' flag is set to 'false', which indicates a receiver that is not followed by any autonomous retransmission. The receiver can then start the decoder and process the data as in any hybrid automatic response request (ARQ) scheme. The 'rest of data' flag can therefore be seen as an 'do not start decoder' indicator to the receiver.

4 illustrates a frame structure including a "Remaining Transmission" field according to a preferred embodiment of the present invention. The 'Remaining Transmission' field may be included in the frame instead of the remaining data flags. Field indicates how much additional autonomous retransmission is expected. In the first frame, the transmitter indicates that the next two frames will include autonomous retransmission and therefore must be soft combined with the initial transmission before decoding. In the second frame, the 'remaining transmission' field is set to indicate that one additional autonomous retransmission follows, and finally in the third slot, the remaining transmission field is set to zero as the last frame, and three frames The decoder must be started after soft combining.

The advantage with the 'Remaining Transfer' field is the best handling for error cases. If the second frame is lost, ie in FIG. 3, the receiver does not know whether or not the decoding process should begin after frame 3. On the other hand in FIG. 4, the remaining data fields indicate to the receiver that decoding should not be initiated until the end of frame 3, and an additional condition is that initiating the decoding process is not necessary for soft combining frames (1, 2, 3). Is based.

In order to further increase robustness for the error case, it is possible to send a feedback signal (ACK / NAK) for the last autonomous transmission even if the receiver does not delete the particular transmission. This means, for example, that no retransmission may be needed unless the last transmitted transmission time interval (TTI) is deleted. This is only possible if the receiver knows how much autonomous transmission the transmitter performs.

In the above description, it has been assumed that a hybrid automatic response request (ARQ) process number and a new data indicator (or similar information) RK are sent with each data frame. In general, it is possible to send a process number and a new data indicator only in the autonomous reception of the first frame. Some transmit power can be saved with this approach and can be used instead of data transmission, but the scheme can also be more sensitive to error cases since the first frame is crucial for receiving.

5 shows the remaining data flags, such as part of TFCI signaling, in accordance with an embodiment of the invention. The 'rest of data' flag (or field) has been shown as separate signaling in the figure. Although this is one possibility, it is desirable to show flags / fields as part of TFCI signaling. Autonomous reception is typically only useful at the lowest data rates. Therefore, the 'rest of data' flag / field, such as part of the TFCI, can reduce the total number of bits needed, as shown in FIG.

In general, retransmissions are any well-known for hybrid automatic response requests (ARQs), such as CHASE combining or incremental redundancy, whether they are autonomous or not. Can be used. In addition, there are no assumptions about the code rate used, and for example the value given for a transmission time interval (TTI) should only be visible by way of example. After all, although the principle is described in the cellular update case, it can also be applied to the downlink as a whole.

6 is a block diagram of an ACK / NAK signal including whether data can be decoded from the (re) transmission received at the time the ACK / NAK signal is transmitted, in accordance with a preferred embodiment of the present invention. In the above-described embodiment, the transmission of the ACK / NAK signal is done at the end of the decoding process, and the ACK / NAK indicator is indicated by a dotted line as shown in Figs. The question is that the ACK / NAK is ignored by the receiver (or not all sent). However, the performance of the scheme can be further enhanced if such an ACK / NAK indicator is used, i.e. if the feedback signal transmitted for each frame is incremental. For each frame, the transmitted ACK / NAK indicates whether the data can be decoded. If only a single decoder is available, the decoding of the previous frame must be stopped (unless decoding has already been completed) and an ACK / NAK is generated indicating whether or not the data can be decoded at the break time. Another possibility is that when autonomous retransmission is deleted, the decoding of data is not interrupted; Instead, decoding continues as shown. When autonomous retransmission is deleted, this retransmission is soft combined with the data already received and the combined data is decoded in a separate decoding process.

For example, the smallest possible data unit is 320 bits, and with a 2 ms transmission time interval (TTI), the minimum data rate is 160 kbit / s. The required DPCCH power offset associated with the DPCCH is X. If the terminal cannot provide a power offset of X due to power limitations, the terminal may decide to transmit the same data unit with a power offset of X / 2 in one transmission time interval (TTI), thus autonomously following the transmission time interval. Retransmit the data unit (with a power offset of X / 2). The overall result is 320 bits transmitted at 2 + 2 = 4 ms, which is an 80 kbit / s data rate with a power requirement of X / 2 dB (related to DPCCH). Note also that there may be additional demands for autonomous retransmission. As mentioned above, the network needs to limit the terminal data rate (power offset) for interference reasons. Therefore, even if the terminal provides a high data rate, it may not be allowed to use it due to network constraints.

In determining whether retransmission is needed, the transmitter can consider all received feedback signals and enhance the robustness to errors in the feedback signals. As in the example, the receiver may consider each received feedback signal after the first received ACK (the first few feedback signals are always NAK-capable) and make a decision according to the ratio of received ACK / NAK. Decisions can be made based on soft information or from the received feedback signal. Another example may consider the last 'k' received feedback signal and make a joint decision from them.

Claims (35)

A wideband code division multiple access using a hybrid automatic response request (ARQ) and comprising at least one user equipment (UE) and a transmit / receive base station (BTS), the user equipment (UE) in communication with the transmit / receive base station (BTS) A method of application layer delivery of received packets in a (WCDMA) telecommunication system, The base transceiver station (BTS) is Transmit a first frame comprising a data unit from the user equipment (UE) to the transmit / receive base station (BTS); Transmit the next frame before the acknowledgment message is received at the user equipment (UE), each next frame from the user equipment (UE) to the transmit / receive base station (BTS), the repetition of the data unit in the first frame. It includes; And In the wideband code division multiple access (WCDMA) telecommunications system, after receiving the frame (s) is arranged to initiate a decoding process at the transmitting and receiving base station (BTS). Application layer delivery method for received packets. The method of claim 1, Receiving the first frame is followed by the transmit / receive base station (BTS) initiating decoding on the first frame. The method of claim 1, Receiving a repeated frame combines the data unit from the last received frame (s) with the data unit of the other received frame (s). The method of claim 3, Further comprising determining whether the precondition is met, if so, Initiating a decoding process of combined data units from the received frames. The method of claim 1, And said user equipment (UE) for determining that the power available to said user equipment (UE) is not sufficient to support a high data rate. The method of claim 4, wherein The precondition is that the hybrid automatic response request (ARQ) process of the current frame is different from the hybrid automatic response request (ARQ) of the preceding frame. The method of claim 6, And the base station (BTS) transmits an ACK / NAK signal indicating the result of the decoding process to the user equipment (UE). The method of claim 4, wherein The precondition includes the user equipment (UE) for transmitting the remaining data flag, set to a first value, in all frames except the last frame indicating that each frame is transmitted autonomously, wherein in the last frame, the And the user equipment (UE) transmits the remaining data flag set to the second value, indicating no additional autonomous transmission. The method of claim 8, The precondition further includes when receiving the remaining data flag set to the second value, the receiving base transceiver station (BTS) begins to decode the data unit collected from the first frame to the last frame, and ACK / And a NAK signal is transmitted to the user equipment (UE). The method of claim 4, wherein The precondition comprises a remaining transmission field in every frame indicating the subsequent number of additional autonomous retransmissions. The method of claim 10, The precondition further comprises the remaining transmission field in a second frame set smaller than the first frame. The method of claim 11, The precondition further comprises the remaining transmission field set to 0 indicating that the decoder should be started after soft combining is completed in the last frame and then an ACK / NAK signal is sent to the user equipment (UE). Application layer delivery method for received packets. The method of claim 1, Upon receiving a signal constraining the use of a high data rate, the user equipment (UE) determines whether autonomous retransmission is initiated. Means for application layer delivery of received packets in a wideband code division multiple access (WCDMA) telecommunications system using a hybrid automatic response request (ARQ) and comprising at least one user equipment (UE) and a transmit / receive base station (BTS) Wherein the user equipment (UE) is in communication with the base transceiver station (BTS), the base transceiver station (BTS) of a wireless telecommunication system, The base transceiver station (BTS) is Receive, from the user equipment (UE), to the transmit / receive base station (BTS), a first frame comprising a data unit; Receive a next frame, each next frame comprising a repetition of the data unit in the first frame from the user equipment (UE) to the transmit / receive base station (BTS); And a receiver for coupling means for soft combining the data units received in the first and next frames. And And a decoder for decoding said soft combined data unit, said decoding process being initiated according to a precondition. The method of claim 14, And the decoder starts decoding the first frame upon reception of the first frame. The method of claim 15, The decoder stops decoding the first frame upon receiving a second frame comprising the same data unit of the first frame and combines the data units of the first and second frame. Transmission and reception base stations of communication systems. The method of claim 14, Further comprising means for determining whether the precondition is met, if so Means for initiating a decoding process of the combined data unit from the first and subsequent frames. The method of claim 17, And the precondition comprises a hybrid automatic response request (ARQ) process of a next frame different from the hybrid automatic response request (ARQ) process of the preceding frame. The method of claim 18, And a base station (BTS) transmits an ACK / NAK signal to indicate a result of the decoding process. The method of claim 14, The precondition includes the transmit / receive base station (BTS) receiving the remaining data flag set to a first value, in all frames except the last frame indicating that each frame is autonomously transmitted, wherein in the last frame, the The remaining data flag is set by the transmit / receive base station (BTS), set to a second value, wherein the user equipment (UE) transmits the remaining data flag set to a second value, indicating no additional autonomous transmission. Transmitting and receiving base station of a wireless telecommunication system, characterized in that. The method of claim 20, Upon receiving the remaining data flag set to the second value, the receiving base transceiver station (BTS) begins decoding the data unit collected from the first frame to the last frame, and the base transceiver station (BTS) A base station for transmission and reception of a wireless telecommunication system, characterized by transmitting ACK / NAK to a user equipment (UE). The method of claim 14, The precondition comprises a remaining transmission field in the received first frame indicating the number of additional autonomous retransmissions following the first transmission. The method of claim 22, The precondition may further include the remaining transmission field in a second frame set smaller than the first frame. The method of claim 23, wherein And further comprising the remaining transmission field in the last frame set to zero indicating that the decoder should be initiated after the soft combining is completed and then an ACK / NAK signal is sent to the user equipment (UE). Transmission and reception base stations of communication systems. The method of claim 14, Means for transmitting to the user equipment (UE) a signal constraining the use of a higher data rate. A wideband code, wherein a user equipment (UE) device communicates with the transmit / receive base station (BTS), using a hybrid automatic response request (ARQ), and including at least one user equipment (UE) and a transmit / receive base station (BTS). A user device (UE) device capable of operating in a split multiple access (WCDMA) telecommunication system, comprising: The user device (UE) Transmitting a first frame including a data unit from the user equipment (UE) to the transmit / receive base station (BTS), and repeat the data of the first frame from the user equipment (UE) to the transmit / receive base station (BTS). Transmit a next frame comprising a; Transmitting means for transmitting the last frame; And And receiving means for receiving and accepting an ACK / NAK signal from the transmit / receive base station (BTS) indicating that the transmit / receive base station (BTS) has received a notification and determined that the prerequisite for the received transmission has been met. A user device device capable of operating in a wideband code division multiple access telecommunication system. The method of claim 26, The user device ignoring an ACK / NAK responsive to the base transceiver station (BTS) receiving the first frame and ignoring any ACK / NAK receiving the next frame transmitted by the user device (UE) ( A user equipment device operable in a wideband code division multiple access telecommunication system. The method of claim 26, The precondition sends an end frame having a hybrid automatic response request (ARQ) process different from the hybrid automatic response request (ARQ) process of the progress frame and responds to receipt of the different hybrid automatic response request (ARQ) process. Means for receiving a NAK signal, wherein the user equipment device is operable in a wideband code division multiple access telecommunication system. The method of claim 26, The user equipment (UE) device sends an ACK / NAK signal to the user equipment (UE) in response to receiving the different hybrid automated response request (ARQ) from the transmitter base station (BTS) indicating that the precondition is met. And a user equipment device operable in a wideband code division multiple access telecommunication system. The method of claim 26, Means for setting a 'rest data' flag, set to a first value, in all frames except the last frame indicating that each frame is autonomously transmitted, in which the user equipment (UE) A user device device operable in a wideband code division multiple access telecommunications system characterized by transmitting a remaining data flag, set to a value of 2, to indicate no additional autonomous transmission. The method of claim 30, Wideband code division multiple access telecommunication, characterized in that after transmitting the remaining data flag, currently set to the second value, a corresponding ACK / NAK signal is accepted by a user equipment (UE) indicating that a precondition is met; A user device device capable of operating in a system. The method of claim 26, The precondition may be operable in a wideband code division multiple access telecommunication system, comprising means for setting the remaining transmission fields included in every frame and indicating the number of additional autonomous retransmissions following the first frame transmission. User device devices. The method of claim 32, And wherein the precondition further comprises setting the remaining transmission field of a second frame less than the first frame. The method of claim 33, The precondition further comprises setting the remaining transmission field to zero indicating that the decoder should be started after soft combining is completed in the last frame and then an ACK / NAK signal is sent to the user equipment (UE). A user equipment device operable in a wideband code division multiple access telecommunication system. The method of claim 26, And means for accepting a signal limiting the use of a high data rate.

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