WO2013166990A1

WO2013166990A1 - Method and apparatus for increasing channel power

Info

Publication number: WO2013166990A1
Application number: PCT/CN2013/075475
Authority: WO
Inventors: 赵悦莹; 马雪利
Original assignee: 华为技术有限公司
Priority date: 2012-05-10
Filing date: 2013-05-10
Publication date: 2013-11-14
Also published as: CN102685871B; CN102685871A

Abstract

The present invention relates to the technical field of wireless communications. Disclosed are a method and an apparatus for increasing channel power, which can be used to increase the channel power of a terminal device adopting a multi-input multi-output technology. The method of the present invention comprises: a terminal device judging whether a main stream and an auxiliary stream exist in an uplink data stream to be transmitted by the terminal device; and if the main stream and the auxiliary stream exist in the data stream, the terminal device increasing the power of a control channel of the main stream and the power of a channel corresponding to an auxiliary pre-coding vector, the control channel of the main stream being corresponding to a main pre-coding vector. The present invention is suitable for increasing the channel power of the terminal device adopting the multi-input multi-output technology.

Description

Method and device for improving channel power

The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for improving channel power. Background technique

Among the existing wireless communication technologies, single-input multiple-output technology and multiple-input multiple-output technology are two commonly used uplink data transmission technologies.

As shown in FIG. 1a, the general flow of the single-input multiple-output technology includes: The terminal device processes one data stream at a time, and the data stream is transmitted by one physical data channel, and a physical control channel is required to bear the data flow in the physical Attribute information on the data channel (such as the size information of the data packet, etc.), but the physical control channel does not participate in the demodulation, power control, etc. control of the data stream by the pilot channel in this case. The terminal device performs processing such as spreading, superimposition, scrambling, and modulation on the data stream, and then transmits the data to the wireless network through the antenna. When the service rate of the data channel is large, the terminal device usually needs to increase the power of the control channel, and the control channel with the increased power is added to the control of demodulation and power control of the data stream to ensure that the terminal device processes the data stream. Performance at the time. Boosting (power enhancement mode under the 3GPP protocol) is a common method for improving channel power based on single-input multiple-output technology, in which increasing the channel power is to increase the power of signals on the channel. The general process includes: the terminal device determines whether the service rate of the physical data channel is greater than a preset threshold, and if the service rate is greater than a preset threshold, the terminal device can increase the power of the physical control channel, and the physical control channel with the enhanced power and The pilot channel jointly performs demodulation and power control operations on the data stream, so that the channel participating in the control work is increased from the original one to two, thereby satisfying the demodulation of the data stream by the terminal device at a large service rate. Control operations such as power control, for example: As shown in Figure la, the terminal device can increase the power of the physical control channel.

The main differences between multi-input multi-output technology and single-input multi-output technology are:

终端Multi-input and multi-output technology terminal devices process multiple data streams at a time, when they are located When the data stream includes one mainstream and at least one auxiliary stream, the terminal device needs to use at least two physical data channels, and the service rate of the data channel where each data stream is located may be different. For example, as shown in FIG. 1b, the terminal device simultaneously Processing a primary stream and a secondary stream, wherein the data channel in which the mainstream is located is a physical data channel, the data channel in which the auxiliary stream is located is a physical data channel 2, and the service rate of the physical data channel Γ and the physical data channel 2 is generally not the same.

Due to the above differences, the following main problems have been caused to make it impossible for the terminal device using the MIMO system to directly apply the existing Boosting:

A terminal device using multiple-input multiple-output technology needs to process multiple data streams at a time, and the service rate of the data channel in which each data stream is located may be different. The existing Boosting can only cope with the service rate of one data channel. The problem is that the service rate of multiple different data channels cannot be coped with, that is, how the terminal device needs to improve the power of the signal on the channel in the scenario where the auxiliary stream exists, resulting in directly using the existing Boosting to improve the channel power. The terminal device will have many problems such as program errors in the stage of determining the start and stop of the channel power increase, and the subsequent process of improving the channel power and allowing the channel of the enhanced power to participate in the demodulation and power control of the data stream is also performed. Unable to proceed.

Invented content

Embodiments of the present invention provide a method and apparatus for improving channel power, which enable a terminal device using multiple input multiple output technology to improve channel power.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In one aspect, an embodiment of the present invention provides a method for improving channel power, where the method is applied to a multiple input multiple output technique, including:

The terminal device determines whether there is a mainstream stream and an auxiliary stream in the uplink data stream to be sent;

If there is a mainstream and a secondary stream in the data stream, the terminal device increases the power of the mainstream control channel and the power of the channel corresponding to the secondary precoding vector, and the mainstream control channel corresponds to the primary precoding vector.

In another aspect, an embodiment of the present invention provides an apparatus for improving channel power, the apparatus being used for a multiple input multiple output technique, including: a determining unit, configured to determine whether a mainstream stream and a secondary stream exist in an uplink data stream to be sent by the current terminal device;

a power boosting unit, configured to: when the determining unit determines that there is a mainstream and a secondary stream in the data stream, increase a power of a mainstream control channel and a power of a channel corresponding to the secondary precoding vector, where the mainstream control channel corresponds to the master Precoding vector.

In still another aspect, an embodiment of the present invention provides a terminal device including the above apparatus for improving channel power.

In a further aspect, an embodiment of the present invention provides a network side network element, including: a receiving unit, configured to receive a data stream sent by the terminal device;

a processing unit, configured to determine the number of received data streams, and the data stream includes only the mainstream, including only the auxiliary stream or the mainstream and the auxiliary stream, and the power is improved by using the channel of the demodulated power boost according to the determination result. The channel is demodulated.

The method and device for improving channel power provided by the embodiments of the present invention, the terminal device using the multiple input multiple output technology can determine whether it is necessary to improve the power of the signal on the channel in the presence of the auxiliary stream, and find that the channel needs to be improved. After the result of the power, the power of the corresponding channel is selected and increased, so that the channel with increased power participates in the control of demodulation, power control, and the like of the data stream. Compared to the prior art, the present invention enables a terminal device to increase channel power in a dual stream or multi-stream scenario of multiple input multiple output techniques. Attachment

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the embodiments and the drawings that need to be used in the prior art will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

Figure la is a schematic flow diagram of a specific example of a single input multiple output technique in the prior art;

Figure lb is a schematic flow diagram of a specific example of a multi-input multiple-output technique in the prior art;

2a is a flowchart of a method for improving channel power according to Embodiment 1 of the present invention; FIG. 2b is a schematic diagram of a method for improving channel power according to Embodiment 1 of the present invention; FIG. 3 is a flowchart of a method for improving channel power according to Embodiment 2 of the present invention; FIG. 3b is a flowchart of a method for improving channel power according to Embodiment 2 of the present invention; A flow chart of a method for boosting channel power in the case where the transmitted data is a retransmission;

4 is a flowchart of a specific example provided by Embodiment 2 of the present invention;

Figure 5 is a flowchart of a specific example provided by Embodiment 2 of the present invention;

6 is a schematic structural diagram of an apparatus for improving channel power according to Embodiment 3 of the present invention;

7 is a schematic structural diagram of an apparatus for improving channel power according to Embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram of a network side network element according to Embodiment 5 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to make the advantages of the technical solutions of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Example 1

The embodiment of the present invention provides a method for improving channel power. The method is applied to a multiple input multiple output technology, and the method flow of the present invention may be performed by a terminal device using multiple input multiple output technology. The terminal device may be a user equipment (UE, User Equipment), or other device that communicates with the network side network element through wireless. The network side network element may be a base station, and in different communication systems, for example, Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple access (WCDMA, Wideband Code Division Multiple Access Wireless), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc., the base station can have different forms and names, for example, it can be Base station in GSM or CDMA (BTS, Base Transceiver Station), which may be an access point (AP, Access Point) in a Femtocell, a base station (NodeB) in WCDMA, or an evolved base station (eNB in LTE). Or e-NodeB, evolved Node B), the invention is not limited.

As shown in FIG. 2a, the method may specifically include:

Step 201: The terminal device determines whether the primary stream and the auxiliary stream exist in the uplink data stream to be sent.

Specifically, in the present invention, the terminal device that uses the multiple input multiple output technology to determine whether there are mainstream and auxiliary streams may be various, for example: the terminal device may detect the number of currently existing data streams by using prior art means. Therefore, it is determined whether there is a mainstream stream and a secondary stream, for example: when the data stream is sent for the first time, the terminal device can acquire the current rank value, and determine the number of data streams according to the obtained rank value. If the rank value is equal to 1, it means that only the primary stream exists and there is no auxiliary stream; the rank value is equal to 2, indicating that there are currently two data streams, that is, the mainstream and one auxiliary stream. The terminal device obtains the current rank value, which may include receiving signaling sent by the network side, such as physical layer signaling, where the signaling includes a value of rank. When the data stream is retransmitted, the terminal device may obtain, according to the message sent by the network side network element, the data stream to be retransmitted, to obtain the data stream to be sent, which is only the mainstream, and only the auxiliary stream or the mainstream and the auxiliary stream. .

Step 202: If there is a mainstream and a secondary stream in the data stream, the terminal device increases the power of the mainstream control channel and the power of the channel corresponding to the secondary precoding vector.

The mainstream control channel corresponds to a primary precoding vector.

Specifically, there are various methods for the terminal device to increase the power of the mainstream control channel. For example, the terminal device can adjust the power offset value of the mainstream control channel to a multiple of the original value by using existing means, thereby enabling mainstream control. The channel operates at a power several times the original channel power, and the terminal device enables the mainstream control channel and the pilot channel to simultaneously perform demodulation and power control operations on the data stream. The terminal device increases the power of the channel, that is, increases the power of the signal on the channel, and the method may be: the terminal device outputs a power boosting instruction to the power amplifying unit, such as a power amplifier, according to the channel to be boosted, and the command may be A signal.

Further, if the auxiliary stream does not exist in the data stream, it means that only the mainstream, that is, the single-stream scenario in the multi-input and multi-output technology exists in the data stream. At this time, the terminal device can be improved through the existing single-stream scenario. The channel power method is used to increase the channel power, which will not be described here.

Specific means for improving channel power may be, but not limited to, prior art hands Segment: Figure 2b is the drawing involved in the 3GPP protocol. According to the protocol, the data stream is multiplied by some parameters during the processing on each channel, so that the size of these parameters directly affects the signal on the channel. Power, such as E-DPCCH (E-DCH (Enhanced Dedicated Channel) Dedicated Physical Control Channel, E-DCH dedicated physical control channel)

p _ec proportional, i.e., the larger the value, the greater p _ec of the E-DPCCH channel power.

The method for improving the channel power provided in this embodiment, the terminal device using the multiple input multiple output technology can determine whether it is necessary to improve the power of the signal on the channel in the presence of the auxiliary stream, and obtain the result that the channel power needs to be improved. After that, select and increase the power of the corresponding channel. Compared with the prior art, the present invention enables a terminal device to increase channel power in a dual stream or multi-stream scenario of multiple input multiple output technology.

Example 2

An embodiment of the present invention provides a method for improving channel power, where the method is applied to a multiple input multiple output technology, and the method includes:

Specifically, in this embodiment, a specific method for improving channel power of the terminal device is described in the case where there is one auxiliary stream.

In this embodiment, there are two specific ways in which the terminal device using the MIMO system can determine whether it is necessary to increase the power of the signal on the channel in the presence of one auxiliary stream. The first is the flow corresponding to step 301a and step 302a included in Fig. 3a; the second is the flow corresponding to step 301b included in Fig. 3b.

The first method of increasing the power of a signal on a channel can include:

Step 301a: The terminal device determines whether there is a mainstream and an auxiliary stream in the uplink data stream to be sent.

If there is a main stream and a secondary stream, step 302a is performed. If no auxiliary stream exists, step 306 is performed: a process of boosting channel power in a single stream scenario. Specifically, if there is no auxiliary stream currently, it indicates that the data stream processed by the terminal device when transmitting the uplink data is the mainstream data stream, and the terminal device can exist only in the existing single input multiple output technology according to the existing one. The channel power improvement method in the mainstream case is to increase the power of the mainstream control channel and the power of the tuner channel.

Step 302a: The terminal device detects whether the service rate of the data channel where the mainstream of the uplink data stream to be sent by the current terminal device is greater than a preset threshold. If the terminal device detects that the service rate of the data channel where the main stream is located is less than or equal to a preset threshold, the terminal device does not process.

In this embodiment, for example, FIG. 4 is a schematic diagram of a general process of transmitting uplink data by a terminal device using multiple input multiple output technology. The current mainstream data channel is physical data channel 1, and the mainstream control channel is physical control channel 1. For example, the physical data channel 1 may be an E-DPCH Dedicated Physical Data Channel (E-DCH Dedicated Physical Data Channel), and the physical control channel 1 may be an E-DPCCH. At this time, the terminal device detects the current terminal device. Whether the service rate of the data channel where the main stream is located in the sent uplink data stream is greater than a preset threshold may be, but is not limited to, obtaining the E-DPDCH from the attribute information of the data stream included in the E-DPCCH by using prior art means. The value of the service rate E-TFCI (E-DCH Transport Format Combination Indicator), and whether the E-TFCI is greater than a preset threshold E-TFCI _ec , _b00St .

If there is a mainstream and a secondary stream in the uplink data stream sent by the current terminal device, and the service rate of the data channel where the mainstream is located is greater than a preset threshold, the process of increasing the channel power may continue to be performed, for example, in some channels. For example, the method flow corresponding to step 303 or step 304 is performed. If the auxiliary stream is not present in the uplink data stream to be sent by the current terminal device, the method flow corresponding to step 306 is performed.

A second method of increasing the power of a signal on a channel can include:

Step 301b: The terminal device determines whether there is a mainstream and an auxiliary stream in the uplink data stream to be sent.

That is, the terminal device may not determine the service rate of the data channel where the main stream is located, but directly determine whether it is necessary to increase the power of the signal on the channel according to whether the main stream and the auxiliary stream are present.

If the current and the auxiliary stream are sent by the current terminal device, the process of increasing the channel power may be performed, for example, performing power upgrade on some channels, for example, further performing step 303 or step. The method flow corresponding to step 304: If there is no auxiliary stream in the uplink data stream sent by the current terminal device, the method flow corresponding to step 306 may be further performed.

Step 303 is directed to a manner of improving the power of the channel when the control channel of the auxiliary stream corresponds to the primary precoding vector, and step 304 is for the control channel of the auxiliary stream to correspond to the secondary precoding. In the case of a vector, the way in which the power of the channel is boosted.

Specifically, it can be: Step 303: Simultaneously increase the power of the mainstream control channel and the power of the tuner channel.

The mainstream control channel corresponds to a primary precoding vector, and the supplementary frequency channel corresponds to the secondary precoding vector.

For example: As shown in FIG. 4, there are two precoding vectors, namely a primary precoding vector and a secondary precoding vector, where physical control channel 1, physical data channel 1, physical control channel 2, and dominant frequency channel correspond to primary precoding. The vector, the pilot channel and the physical data channel 2 correspond to the secondary precoding vector. In actual application, the physical control channel 1 may be an E-DPCCH, the physical data channel 1 may be an E-DPDCH, the physical control channel 2 may be an SE-DPCCH (Secondary-E-DPCCH), and the physical data channel 2 may be The SE-DPDCH, the pilot channel may be a DPCCH, and the pilot channel may be an S-DPCCH. Moreover, the control channel of the auxiliary stream is the physical control channel 2, the control channel of the mainstream is the physical control channel 1, and the physical control channel 2 corresponds to the primary precoding vector. In this case, the terminal device increases the power and the frequency of the physical control channel 1. The power of the channel.

Step 304: Simultaneously increase the power of the mainstream control channel and the power of the control channel of the auxiliary stream.

For example, as shown in FIG. 5, the control channel of the auxiliary stream is the physical control channel 2, the mainstream control channel is the physical control channel 1, and the physical control channel 2 corresponds to the secondary precoding vector. In this case, the terminal device improves the physical control. The power of channel 1 and the power of physical control channel 2.

It should be noted that, in the foregoing embodiment, the method for improving channel power determines how the terminal device determines whether to perform channel power boosting (such as steps 301a and 302a, and further, step 301b), and specifically on which channels the power boost is performed. The method (such as step 303 or step 304), the two methods correspond to two stages in the method flow for improving channel power, which may be applied separately or combined with each other.

The above description is the case where the data to be sent by the terminal device is the first transmission. In the actual application of the existing multiple input multiple output technology, there is a case where the secondary stream needs to be retransmitted, for example: the first time the terminal device transmits the mainstream In the process of the auxiliary stream, it is often the case that only the main stream, only the auxiliary stream, or the mainstream and the auxiliary stream fail to be transmitted due to wireless signal interference or other factors. In this case, the terminal device performs data in a targeted manner. Stream resend.

The following further describes that the data to be sent by the terminal device is retransmitted, and is promoted. The method for the channel power, as shown in FIG. 3C, may specifically include:

Step 402: The terminal device determines whether the data stream to be sent is a retransmission state. After the terminal device sends the data stream to the network element on the network side in a single-stream or dual-stream manner, it determines whether it needs to retransmit the sent data stream according to the indication of the network element on the network side.

If it is determined that only the mainstream is in the retransmission state, step 403 may be performed to improve the channel power when the main stream is retransmitted according to the process of boosting the channel power in the single-stream scenario.

If it is determined that only the auxiliary stream is in the retransmission state, step 404 may be performed according to the method: increasing the power of the control channel and the pilot channel of the retransmitted auxiliary stream, and improving the channel power when the auxiliary stream is retransmitted. For example, as shown in FIG. 4, the control channel of the auxiliary stream is the physical control channel 2, and when the terminal device retransmits the auxiliary stream, the power of the physical control channel 2 and the tuner channel can be improved. In this case, the retransmission mode used in the embodiment of the present invention can improve the channel power, and the channel with improved power participates in the control of demodulation and power control of the auxiliary stream, thereby improving the service quality of the communication.

If it is determined that the main stream and the auxiliary stream are in the retransmission state, step 303 or step 304 may be performed to improve the channel power when the main stream and the auxiliary stream are retransmitted according to the process of improving the channel power in the dual stream scenario. The manners provided in the embodiments of the present invention are not described herein.

The method for improving the channel power provided in this embodiment, the terminal device using the multiple input multiple output technology can determine whether the channel power needs to be increased in the presence of one auxiliary stream, and after obtaining the result that the channel power needs to be improved, according to The precoding vector corresponding to the control channel of the auxiliary stream and the transmission state select and increase the power of the corresponding channel. Compared with the prior art, the present invention enables a terminal device to increase channel power in a dual stream scenario of multiple input multiple output technology.

The above is a description of the embodiment of the present invention from the terminal device side, and the multi-transmission may include:

The physical control channel 1 is E-DPCCH, and the physical control channel 2 is S-E-DPCCH as an example:

A method for the terminal device to determine whether the main stream and the auxiliary stream are present is based on signaling sent by the network side, that is, indicating the number of data streams used by the terminal device, such as signaling of the carried rank value. The decision is made, but because the terminal device finally uses the dual stream or more to transmit data, it may be affected by other factors, such as: Whether the analysis of the rank value in the signaling sent by the network side is correct, whether the terminal device itself supports the dual stream or the like, and the network element on the network side can first determine whether the data received by the network side has the mainstream and the auxiliary stream. For example, it is detected whether E-DPCCH and SE-DPCCH exist at the same time.

When only E-DPCCH or S-E-DPCCH is detected, the terminal device is considered to be sent according to rank=l. When only E-DPCCH is detected, it can be processed according to the existing single-stream scenario, such as: Decoding the E-TFCI field of the E-DPCCH, and decoding the E-TFCI value and the preset valve. The values are compared. If the E-TFCI is greater than the threshold, the mainstream data is demodulated according to boosting (ie, channel power boost mode). When only the S-E-DPCCH is detected, it can be determined that the secondary stream is retransmitted at this time, and the auxiliary stream data is demodulated according to the boosting in the secondary stream retransmission scenario. In the demodulation of boosting in the secondary stream retransmission scenario, the S-E-DPCCH and the S-DPCCH which are demodulated again can be channel-estimated to obtain a channel fading factor. Due to boosting, the power of these two channels is higher, and the channel fading factor estimated again is more accurate.

When E-DPCCH and S-E-DPCCH are detected, it can be determined that the terminal device transmits according to rank=2, and the mainstream data and the auxiliary stream data can be processed according to dual-stream boosting.

In the scenario where the S-E-DPCCH is sent on the primary precoding, the network side network element will use the demodulated E-DPCCH and S-DPCCH for channel estimation again in the boosting demodulation to obtain the channel fading factor. Due to boosting, the two channels are more powerful, so the channel fading factor estimated again is more accurate.

In the scenario where the S-E-DPCCH is transmitted on the secondary precoding, in the demodulation of boosting, the demodulated E-DPCCH and S-E-DPCCH are used again for channel estimation, thereby obtaining the channel fading factor. Due to boosting, the power of these two channels is higher, so that the channel fading factor estimated again is more accurate.

Through the processing flow of the network side network element above, the channel power can be improved in the case of dual stream or multi-stream, and the channel after the power is boosted, and the channel to be increased in power can be demodulated, power control, etc. The process of controlling work.

Example 3

An embodiment of the present invention provides a device for improving channel power. The device is used for multiple input multiple output technology. As shown in FIG. 6, the device 600 includes:

The determining unit 61 is configured to determine whether there is a mainstream and an auxiliary stream in the uplink data stream to be sent by the current terminal device.

a power boosting unit 62, configured to determine, in the determining unit, that a main exists in the data stream When the stream and the auxiliary stream are used, the power of the mainstream control channel and the power of the channel corresponding to the secondary precoding vector are increased.

The mainstream control channel corresponds to a primary precoding vector.

The apparatus for improving channel power provided in this embodiment, the terminal equipment using the multiple input multiple output technology can determine whether the channel power needs to be increased in the presence of the auxiliary stream by the determining unit, and after obtaining the result that the channel power needs to be improved The power of the corresponding channel is increased by the power boosting unit. Compared with the prior art, the present invention enables a terminal device to increase channel power in a dual stream or multi-stream scenario of a multiple input multiple output technique. The apparatus provided in this embodiment may be used to implement the method provided by the embodiment of the present invention. For the specific implementation method, reference may be made to other embodiments of the present invention, and details are not described herein.

Example 4

An embodiment of the present invention provides an apparatus for improving channel power. The apparatus is used for multiple input multiple output technology. As shown in FIG. 7, the apparatus 700 includes:

The determining unit 71 is configured to determine whether there is a mainstream and an auxiliary stream in the uplink data stream to be sent by the current terminal device.

The power boosting unit 72 is configured to: when the determining unit determines that the primary stream and the auxiliary stream are present in the data stream, increase the power of the mainstream control channel and the power of the channel corresponding to the secondary precoding vector.

The mainstream control channel corresponds to a primary precoding vector.

Further, the foregoing apparatus may further include a receiving unit 70, configured to receive signaling sent by the network side, so that the determining unit 71 determines, according to the signaling, whether there is a mainstream and an auxiliary stream in the uplink data stream to be sent. . The signaling may be signaling for indicating the number of data streams used by the terminal device, or signaling indicating retransmission of the data stream.

Further, in a scenario where the control channel of the auxiliary stream corresponds to the primary precoding vector, the power boosting unit 72 includes: a first power boosting subunit 721, configured to improve power and counseling of the mainstream control channel. The power of the frequency channel. The counseling frequency channel corresponds to a secondary precoding vector.

Further, in a scenario where the control channel of the auxiliary stream corresponds to the secondary precoding vector, the power boosting unit 72 includes: a second power boosting subunit 722, configured to improve power and location of the mainstream control channel. The power of the control channel of the secondary stream.

Further, in the scenario of only the secondary stream retransmission, the power boosting unit 72 includes: a third power boosting subunit 723, which is used to improve the control channel and the redirection of the retransmitted auxiliary stream. The power of the frequency channel. The receiving unit 70 in the device for improving the channel power may further be configured to further receive a message for indicating retransmission of the data stream, such as an ACK/NACK message, from the network side network element, where the determining unit may further be used according to The message received by the receiving unit to indicate retransmission of the data stream, determining whether to retransmit, and the data stream to be retransmitted. The power boosting unit 72 is further configured to perform channel power improvement according to a determination result of the determining unit regarding whether to retransmit, and a data stream that needs to be retransmitted, for example, in a case where it is determined that only auxiliary stream retransmission is performed, The third power boosting subunit 723 described above operates.

Further, the power boosting unit 72 may further include: a lifting instruction sending subunit 724, configured to send a power boosting instruction to a power amplifying unit, such as a power amplifier, according to the channel to be boosted. The power boost command can be a signal.

The apparatus for improving channel power in the embodiment of the present invention may be a terminal device. The terminal device may be a user equipment (UE), or other device that communicates with the network side network element through the wireless.

The embodiment of the present invention further provides a terminal device, which communicates over the wireless side and the network side, and may include any device for improving channel power provided in the foregoing embodiments.

The apparatus for improving channel power and the user equipment provided by this embodiment, the terminal equipment using the multiple input multiple output technology can determine whether it is necessary to improve the channel power through the determining unit, and after obtaining the result that the channel power needs to be improved, the power boosting is performed. The unit selects and increases the power of the corresponding channel according to the precoding vector corresponding to the control channel of the auxiliary stream and the transmission state. Compared to the prior art, the present invention enables a terminal device to increase channel power in a dual stream scenario of multiple input multiple output techniques. The apparatus provided in this embodiment may be used to implement the method provided by the embodiment of the present invention. For the specific implementation method, reference may be made to other embodiments of the present invention, which are not described herein.

Example 5

The embodiment of the present invention further provides a network side network element. As shown in FIG. 8, the network element 800 may include:

The receiving unit 82 is configured to receive a data stream sent by the terminal device;

The processing unit 83 is configured to determine the number of received data streams, and the data stream includes only the mainstream, including only the auxiliary stream or the mainstream and the auxiliary stream, and the power is improved by using the channel of the demodulated power boost according to the determination result. The channel is demodulated.

Further, the network element 800 may further include: a sending unit 81, configured to send signaling for specifying the number of data streams used by the terminal device to the terminal device. Further, the processing unit 83 may be further used to:

In the case where it is determined that both the mainstream and the auxiliary stream are included, the processing of mode one or mode two is performed: mode one, in the case where the main control channel and the control channel of the auxiliary stream correspond to the main precoding vector, the main control channel and The pilot frequency channel is demodulated. In the second mode, the main control channel corresponds to the primary precoding vector, and the control channel of the auxiliary stream corresponds to the secondary precoding vector, and the control channels of the mainstream control channel and the auxiliary stream are demodulated.

Determining the control channel and the tuner channel of the auxiliary stream in the case where it is determined that only the auxiliary stream exists;

In the case where it is determined that only the mainstream exists, the corresponding channel with the boosted power is demodulated in a single stream scenario, for example, demodulation of the mainstream control channel and the dominant channel.

Further, the processing unit may be further configured to determine whether the received data stream needs to be retransmitted, and if the retransmission is needed, send, by the sending unit, an instruction for indicating retransmission of the data stream to the terminal device.

The above network side network element may be a base station.

Through the network element on the network side, the channel power can be improved in the case of dual-stream or multi-stream, and the channel after the power is boosted, and the channel with the increased power can participate in the demodulation and power control of the data stream. process. The same or similar parts may be referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the device embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Claim

A method for improving channel power, characterized in that the method is applied to a multiple input multiple output technique, comprising:

The terminal device determines whether there is a mainstream and a secondary stream in the uplink data stream to be sent; if there is a mainstream and a secondary stream in the data stream, the terminal device increases the power of the mainstream control channel and the corresponding secondary precoding vector. The power of the channel, the main control channel corresponding to the main precoding vector.

The method for improving the channel power according to claim 1, wherein the control channel of the auxiliary stream corresponds to the primary precoding vector, and the power of the channel corresponding to the secondary precoding vector is improved: The power of the frequency channel, the supplementary frequency channel corresponding to the secondary precoding vector.

The method for improving the channel power according to claim 1, wherein the control channel of the auxiliary stream corresponds to the secondary precoding vector, and the power of the channel corresponding to the secondary precoding vector is increased: The power of the control channel of the stream.

The method for improving channel power according to claim 1, wherein the method further comprises: if there is only a secondary stream in the sent uplink data stream, and the auxiliary stream is retransmitted In the state, the power of the control channel and the pilot channel of the auxiliary stream is increased.

The method for improving the channel power according to any one of claims 1 to 4, wherein the determining, by the terminal device, whether the mainstream stream and the auxiliary stream are present in the uplink data stream that are sent by the terminal device include:

The terminal device receives a message sent by the network side for specifying retransmission of the data stream, and determines, according to the message, whether there is a mainstream and an auxiliary stream in the uplink data stream that is to be resent.

The method for improving the channel power according to any one of claims 1 to 3, wherein the determining, by the terminal device, whether the mainstream stream and the auxiliary stream are present in the uplink data stream that are sent by the terminal device include:

The terminal device receives a signal sent by the network side for specifying the number of data streams used by the terminal device, and determines whether there is a mainstream and a secondary stream in the uplink data stream to be sent according to the signaling.

The method of increasing channel power according to any one of claims 1 to 6, further comprising: transmitting a power boost command to the power amplifier according to the channel to be boosted.

The method for improving channel power according to any one of claims 1 to 7, wherein the mainstream control channel is an E-DCH dedicated physical control channel (E-DPCCH), and the auxiliary stream control channel is supplemented. The E-DCH dedicated physical control channel (SE-DPCCH), the supplementary frequency channel is a secondary dedicated physical control channel (S-DPCCH).

9. A device for improving channel power, characterized in that the device is used for multiple input multiple output technology, comprising:

a determining unit, configured to determine whether the primary stream and the auxiliary stream exist in the uplink data stream to be sent by the current terminal device;

The device for improving the channel power according to claim 9, wherein the control channel of the auxiliary stream corresponds to the primary precoding vector, and the power boosting unit comprises: a first power amplifying subunit, The pilot frequency channel corresponds to the secondary precoding vector to improve the power of the mainstream control channel and the power of the pilot channel.

The device for improving the channel power according to claim 9, wherein the control channel of the auxiliary stream corresponds to the secondary precoding vector, and the power boosting unit comprises: a second power amplifying subunit, The power of the control channel of the main stream and the power of the control channel of the auxiliary stream are increased.

The device for improving channel power according to claim 9, wherein the power boosting unit further comprises: a third power amplifying subunit, configured to determine, in the determining unit, that only the data stream exists When the auxiliary stream is in the retransmitted state, the power of the control channel and the pilot channel of the retransmitted auxiliary stream is increased.

The device for improving channel power according to any one of claims 9 to 12, wherein the device further comprises: a receiving unit, configured to receive a message sent by the network side to indicate retransmission of the data stream. The determining unit is further configured to determine, according to the message, whether there is a mainstream and an auxiliary stream in an uplink data stream that is to be retransmitted.

The device for improving the channel power according to any one of claims 9 to 11, wherein the device further comprises a receiving unit, configured to receive data sent by the network side for indicating the data used by the terminal device. The signaling unit is further configured to determine, according to the signaling, whether there is a mainstream and an auxiliary stream in an uplink data stream to be sent according to the signaling.

The device for improving channel power according to any one of claims 9 to 14, wherein the power boosting unit further comprises a boosting instruction transmitting subunit for using a channel according to a power to be boosted. The power amplifier sends a power boost command.

The apparatus for improving channel power according to any one of claims 9 to 15, wherein the mainstream control channel is an E-DCH dedicated physical control channel (E-DPCCH), and the auxiliary channel control channel is supplemented. The E-DCH dedicated physical control channel (SE-DPCCH), the supplementary frequency channel is a secondary dedicated physical control channel (S-DPCCH).

A terminal device, comprising: means for increasing channel power according to any one of claims 9 to 16.

18. A network side network element, characterized in that

a receiving unit, configured to receive a data stream sent by the terminal device;

The network side network element according to claim 18, wherein the processing unit is further configured to:

In the case where it is determined that both the main stream and the auxiliary stream are included, the main control channel and the tuner channel are demodulated in the case where the main control channel and the control channel of the auxiliary stream correspond to the main precoding vector.

The network side network element according to claim 18 or 19, wherein the processing unit is further configured to:

In the case where it is determined that only the auxiliary stream exists, the control channel and the tuner channel of the auxiliary stream are demodulated.

The network side network element according to any one of claims 18 to 20, wherein the processing unit is further configured to:

In the case where it is determined that only the mainstream exists, the corresponding channel with the boosted power is demodulated in a single stream scenario.

The network side network element according to any one of claims 18 to 21, wherein the network side network element is a base station.