WO2013097455A1

WO2013097455A1 - Method, system, and device for transmitting and receiving uplink data

Info

Publication number: WO2013097455A1
Application number: PCT/CN2012/079234
Authority: WO
Inventors: 徐婧; 潘学明; 沈祖康
Original assignee: 电信科学技术研究院
Priority date: 2011-12-30
Filing date: 2012-07-27
Publication date: 2013-07-04
Also published as: CN102413081A

Abstract

The embodiments of the present invention relate to the technical field of wireless communications, and more particularly to a method, a system, and a device for transmitting and receiving uplink data, so as to solve the problem in the prior art of poor transmission performance of an LTE system. The method for transmitting uplink data according to an embodiment of the present invention comprises: a user equipment multiplying data on a subcarrier or on an OFDM symbol by an orthogonal spreading sequence, to obtain spread data; if the data on a subcarrier is multiplied by the orthogonal spreading sequence, the user equipment mapping the spread data to M subcarriers for transmission, and if the data on an OFDM symbol is multiplied by the orthogonal spreading sequence, the user equipment mapping the spread data to M OFDM symbols for transmission, M being the length of the orthogonal spreading sequence. The method according to the embodiment of the present invention improves the transmission performance.

Description

Method, system and device for transmitting and receiving uplink data The present application claims to be Chinese patent filed on December 30, 2011, the Chinese Patent Office, application number 201110457515.0, and the invention entitled "Methods, systems and devices for transmitting and receiving uplink data" Priority of the application, the entire contents of which are incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for transmitting and receiving uplink data. Background technique

The LTE (Long Term Evolution) system has been selected by many operators as the main solution for the latter 3G. This means that the application scenarios, deployment scenarios and spectrum allocation of LTE are more complicated, far beyond the initial discussion of the LTE standard. Assumption.

Although LTE-A (Long Term Evolution-Advanced) introduces many new technologies, such as multi-carrier aggregation, high-order multi-antenna technology (MIMO) and multi-point coordinated transmission (CoMP), it is mainly used to solve high rates. And high spectral efficiency issues. However, in the actual network deployment process, small interval interference and network throughput are still a more difficult problem.

At present, the interference between cells in the LTE system is very serious, which affects the coverage range; Moreover, the throughput of the LTE system is relatively low.

In summary, the interference between cells in the LTE system is very serious and the throughput is relatively low, which affects the transmission performance of the LTE system. Summary of the invention

The method, system and device for transmitting and receiving uplink data provided by the embodiments of the present invention are used to solve the problem that the transmission performance of the LTE system existing in the prior art is relatively low.

A method for transmitting uplink data provided by an embodiment of the present invention includes:

The user equipment multiplies the data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain the spread spectrum data;

If the data on one subcarrier is multiplied by the orthogonal spreading sequence, the user equipment maps the spread data to M subcarriers for transmission;

If the data on one OFDM symbol is multiplied by the orthogonal spreading sequence, the user equipment maps the spread data to M OFDM transmissions;

Where M is the length of the orthogonal spreading sequence. Preferably, the orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.

A method for receiving uplink data according to an embodiment of the present invention includes:

The network side device determines that the user equipment maps uplink data on the M subcarriers; the network side device receives the mapped uplink data on the M subcarriers, where the uplink data is data on one subcarrier multiplied by an orthogonal spreading sequence. The resulting spread spectrum data; or

The network side device determines that the user equipment maps the uplink data on the M OFDM symbols; the network side device receives the mapped uplink data on the M OFDM symbols, where the uplink data is data on one OFDM symbol multiplied by orthogonal expansion. The spread spectrum data obtained after the frequency sequence;

Where M is the length of the orthogonal spreading sequence.

Preferably, the orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.

The embodiment of the present invention multiplies data on one subcarrier or OFDM symbol by an orthogonal spreading sequence, and maps the spread data to M subcarriers or OFDM symbols for transmission, thereby improving transmission performance;

Preferably, if the orthogonal spreading sequence is a cell-specific configuration, the embodiment of the invention reduces the interference between the systems and improves the transmission performance; further enhances the uplink coverage;

Preferably, if the orthogonal spreading sequence is a user-specific configuration, the embodiment of the present invention improves throughput and thereby improves transmission performance. DRAWINGS

1 is a schematic structural diagram of a system for transmitting uplink data according to an embodiment of the present invention;

2 is a schematic diagram of symbol level data multiplied by an orthogonal spreading sequence according to an embodiment of the present invention;

3 is a schematic diagram of time domain spreading according to an embodiment of the present invention;

4 is a schematic diagram of frequency domain spreading according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

6 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

7 is a schematic flowchart of a method for transmitting uplink data according to an embodiment of the present invention;

FIG. 8 is a schematic flowchart of a method for receiving uplink data according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the user equipment multiplies data on one subcarrier or OFDM (Orthogonal Frequency Division Multiplexing) symbol by an orthogonal spreading sequence, and maps the obtained spread data to M sub-subsequences. Transmitted on a carrier or OFDM symbol, where M is the length of the orthogonal spreading sequence. Since the embodiment of the present invention multiplies data on one subcarrier or OFDM symbol by an orthogonal spreading sequence, the spread data is mapped on M subcarriers or OFDM symbols for transmission, thereby improving transmission performance. Preferably, if the orthogonal spreading sequence is a cell-specific configuration, that is, the orthogonal spreading sequences of different cells may be different, and the orthogonal spreading sequences of different users of the same cell are the same, the embodiment of the present invention reduces the number between the systems. Disturbance, improve transmission performance; further enhance uplink coverage;

Preferably, if the orthogonal spreading sequence is configured by the user, that is, the orthogonal spreading sequences of different users in the same cell are different, the embodiment of the invention improves the throughput, thereby improving the transmission performance.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

In the following description, the implementation of the cooperation between the network side and the user equipment side will be described first. Finally, the implementations from the network side and the user equipment side will be described separately, but this does not mean that the two must be implemented together. In fact, When the network side is implemented separately from the user equipment side, the problems existing on the network side and the user equipment side are also solved, but when the two are combined, a better technical effect is obtained.

As shown in FIG. 1, the system for transmitting uplink data in the embodiment of the present invention includes: a user equipment 10 and a network side device 20. The user equipment 10 is configured to multiply data on one subcarrier or OFDM symbol by an orthogonal spreading sequence to obtain data that is spread; if the data on one subcarrier is multiplied by an orthogonal spreading sequence, the spectrum is spread. The subsequent data mapping is transmitted on M subcarriers; if the data on one OFDM symbol is multiplied by the orthogonal spreading sequence, the spread data is mapped on M OFDM transmissions; where M is the length of the orthogonal spreading sequence ;

The network side device 20 is configured to determine that the user equipment maps uplink data on M subcarriers or OFDM symbols, and receives mapped uplink data on M subcarriers or OFDM symbols.

Specifically, if the user equipment 10 transmits data on the M subcarriers, the network side device 20 receives the mapped uplink data on the M subcarriers;

If the user equipment 10 transmits data on M OFDM symbols, the network side device 20 receives the mapped uplink data on the M OFDM symbols.

The orthogonal spreading sequence is a cell-specific configuration or a user-specific configuration.

If the orthogonal spreading sequence is a cell-specific configuration, the user equipment 10 selects an orthogonal spreading sequence according to the home cell identity and/or the home cell configuration information;

For example, the user equipment 10 obtains the orthogonal spreading sequence number by using the Cell ID mod N, where the Cell ID is the home cell identifier, and N is the orthogonal spreading sequence length;

For example, the network side places the orthogonal spreading sequence number in the home cell configuration information, and the user equipment 10 determines the orthogonal spreading sequence number according to the received home cell configuration information.

Correspondingly, the network side device 20 determines the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices (the principle determined is: the orthogonal spreading sequence configured by the neighboring cell is different) And notifying the user equipment 10; and/or the network side device 20 receiving the orthogonal spreading sequence information configured by the central node to determine the orthogonal spreading sequence of the local cell, and notifying the user equipment; and/or

The network side device 20 determines the orthogonal spreading sequence of the current cell according to the identifier of the current cell configuration. If the orthogonal spreading sequence is configured by the user, the user equipment 10 selects an orthogonal spreading sequence according to the user identifier and/or the home cell configuration information, or determines an orthogonal spreading sequence according to the notification of the network side device 20;

For example, the user equipment 10 obtains the orthogonal spreading sequence number by using the UE ID mod N, where the UE ID is the user identifier, and N is the orthogonal spreading sequence length;

Correspondingly, the network side device 20 autonomously configures the orthogonal spreading sequence of the user equipment (the configuration principle is: the user equipments allocating the same resource are configured with different orthogonal spreading sequences to ensure orthogonality between user equipments), And notifying the user equipment; and/or the network side device 20 determines the orthogonal spreading sequence of the user equipment according to the identifier of the user equipment.

Preferably, the network side device 20 notifies the user equipment of the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter through the high layer signaling or the physical layer signaling; correspondingly, the user equipment 10 according to the received high layer signaling or physical Layer signaling, determining the manner in which uplink data is transmitted and/or orthogonal spreading sequence parameters.

In an implementation, after determining that the uplink channel shield of the user equipment 10 cannot meet the communication requirement, the network side device 20 configures the solution of the embodiment of the present invention for the user equipment. For example, the identifier corresponding to the solution of the embodiment of the present invention is PUSCH Format 2, and the network side device 20 configures the PUSCH Format 2 for the user equipment after determining that the uplink channel shield of the user equipment 10 cannot meet the communication requirement; correspondingly, the user equipment 10 It is known to use the solution of the embodiments of the present invention.

The network side device 20 may determine the uplink channel shield of the user equipment according to at least one of the following information: an uplink SRS signal of the user equipment, feedback information of the user equipment, and location information of the user equipment.

Specifically, if it is determined that the information of the uplink channel shield of the user equipment 10 includes the uplink SRS signal of the user equipment 10, the network side device 20 monitors the uplink SRS signal of the user equipment 10, and determines the user equipment 10 according to the orthogonal spreading sequence. Whether the uplink channel shield meets the communication requirements.

If it is determined that the information of the uplink channel shield of the user equipment 10 includes the feedback information of the user equipment 10, the NACK (Negative ACKnowledge) of the feedback information of the user equipment 20 received by the network side device 20 within the set time period After the number of times is greater than the set threshold, it is determined that the uplink channel shield of the user equipment 20 does not meet the communication requirement, otherwise it is determined that the uplink channel shield of the user equipment 10 satisfies the communication requirement.

If it is determined that the information of the uplink channel shield of the user equipment 10 includes the location information of the user equipment 10, the network side device 20 determines the uplink channel shield of the user equipment 10 after determining that the user equipment 10 is at the cell edge according to the location information of the user equipment 10. The quantity does not satisfy the communication requirement, otherwise it is determined that the uplink channel shield of the user equipment 10 satisfies the communication requirement.

The foregoing three methods for determining whether the uplink channel shield of the user equipment 10 meets the communication requirement may be used independently; or may be comprehensively determined by multiple methods.

It should be noted that, in the embodiment of the present invention, whether the uplink channel shield quantity of the user equipment 10 satisfies the communication requirement is not limited to the foregoing three modes, and other methods capable of determining whether the uplink channel shield quantity of the user equipment 10 meets the communication requirement are also the same. Embodiments of the invention are applicable. Preferably, when the network side device 20 configures the PUSCH Format 2 to the user equipment 10, the PUSCH Format 2 configuration information (that is, the manner in which the uplink data is transmitted and/or orthogonal) may be transmitted to the user equipment through high layer signaling or physical layer signaling. Spreading sequence parameters).

It should be noted that, in the embodiment of the present invention, the PUSCH Format is not limited to the high layer signaling or the physical layer signaling manner, and the other embodiments that can configure the PUSCH Format for the user equipment are applicable to the embodiments of the present invention.

Preferably, in the embodiment of the present invention, the data mapping manner of symbol level spreading may be used.

Specifically, the data mapping manner of the symbol level spread spectrum in the embodiment of the present invention is that the symbol level data is multiplied by the orthogonal spread spectrum sequence, and then mapped to the physical resource block according to the time domain spread spectrum or the frequency domain spread spectrum manner; correspondingly, the user After multiplying the symbol level data by the orthogonal spreading sequence, the device 10 maps to the physical resource block according to time domain spreading or frequency domain spreading.

In implementations, the orthogonal spreading sequence may be a walsh sequence. In order to ensure the orthogonality of the data, preferably, the sequence length is 2 (other lengths are also applicable to the embodiments of the present invention). Taking walsh code length=2 as an example, the process of spreading can be seen in Figure 2; the time domain spreading can be seen in Figure 3; the frequency domain spreading can be seen in Figure 4. Where 6k=n, k is the number of RE (Resource Element) carried by a symbol.

It should be noted that the embodiments of the present invention are not limited to the walsh sequence, and other orthogonal spreading sequences are also applicable to the embodiments of the present invention.

Preferably, the user equipment 10 and the network side device 20 can determine the size of the transport block carrying the data according to the following manner:

The user equipment 10 and the network side device 20 determine the size TBsize of the transport block according to the MCS (Modulation and Coding Scheme) level I _TBS , the number of scheduled physical resource blocks N _PRB and the length of the orthogonal spreading sequence N.

Specifically, the network side device 20 and the user equipment 10 determine, according to the correspondence between the I _TBS , the NPRB and the transport block size, the transport block size corresponding to the ITBS and the N _PRB /N, where N is the length of the orthogonal spreading sequence.

Wherein, LTE 3GPP 36.213 protocol specified I _TBS, N _PRB / N correspondence and three transport block size, I _{_TBS} I _TBS embodiment of the present invention and the embodiment with N _PRB LTE 3GPP 36.213 protocol, and N _PRB is defined In the same manner, in the size mapping of the transport block, in addition to considering the above two factors, the impact of the spread spectrum mapping on the resource mapping needs to be considered. Therefore, the embodiment of the present invention can determine the corresponding fast transmission according to I _TBS and N _PRB /N. size.

In the implementation, the correspondence between the I _TBS , the N _PRB /N and the transport block size in the embodiment of the present invention is similar to the correspondence between the I _TBS , the N _PRB and the transport block size specified in the LTE 3 GPP 36.213 protocol. .

Preferably, the network side device 10 configures a reference signal for the user equipment 20 by using the following rules: The network side configures different cyclic shifts for at least two user equipments or at least two groups of user equipments; or

The network side configures different OCC (Orthogonal Convolutional Code) sequences for at least two user equipments or at least two groups of user equipments.

For example, the scenario where the resources scheduled for at least two (group) user devices are identical may be at least two. The (group) group user equipment is configured with different cyclic shifts ns to ensure the orthogonality of the pilots between user equipments (the different cyclic shifts are not limited to the scenes with the same resources, and other scenarios are also applicable).

For example, for different scenarios in which resources are scheduled by at least two (groups) of user equipments, different OCC sequences may be configured for at least two (group) group user equipments to ensure orthogonality of inter-terminal pilots. The OCC sequence is not limited to scenarios with different resources, and other scenarios are equally applicable.

In an implementation, at least two (group) user equipments may be system level or cell level.

Preferably, if the network side device 20 configures the PUSCH format 2 mode for the user equipment 10, that is, the solution of the embodiment of the present invention, the network side device 20 performs symbol level despreading on the data, and then detects the data by using the existing method. Different device manufacturers have different detection methods for PUSCH format 2, and the specific detection methods are related to the device manufacturer).

Of course, the detection method of the PUSCH format 2 in the embodiment of the present invention can also use more advanced detection technologies, such as joint detection.

As shown in FIG. 5, the user equipment in the system for transmitting uplink data in the embodiment of the present invention includes: a spread spectrum module 500 and a transmission module 510.

The spreading module 500 is configured to multiply data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain the spread spectrum data;

The transmission module 510 is configured to: if the spreading module 500 multiplies the data on one subcarrier by the orthogonal spreading sequence, the spread data is mapped on the M subcarriers; if the spreading module 500 is to be on an OFDM symbol Multiplying the data by an orthogonal spreading sequence, and mapping the spread data to M OFDM for transmission;

Where M is the length of the orthogonal spreading sequence.

Preferably, the orthogonal spreading sequence is a cell-specific configuration.

Correspondingly, the spreading module 500 determines the orthogonal spreading sequence according to the following steps:

The orthogonal spreading sequence is selected according to the home cell identity and/or the home cell configuration information.

Preferably, the orthogonal spreading sequence is a user-specific configuration.

The orthogonal spreading sequence is selected based on the user identity and/or the home cell configuration information.

Preferably, the transmission module 510 determines the size of the transport block according to the following steps:

The size of the transmission block is determined according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.

Preferably, the spreading module 500 determines the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameters according to the received higher layer signaling or physical layer signaling.

As shown in FIG. 6, the network side device in the system for transmitting uplink data in the embodiment of the present invention includes: a determining module 600 and a receiving module 610. The determining module 600 is configured to determine that the user equipment maps the uplink data on the M subcarriers or the OFDM symbol, and the receiving module 610 is configured to receive the mapped uplink data on the M subcarriers or the OFDM symbol, where the uplink data is a subcarrier or an OFDM The data on the symbol is multiplied by the spread spectrum data obtained after the orthogonal spreading sequence, and Μ is the length of the orthogonal spreading sequence.

If the determining module 600 determines that the user equipment maps the uplink data on the subcarriers, the receiving module 610 receives the mapped uplink data on the subcarriers, where the uplink data is data on one subcarrier multiplied by the orthogonal spreading sequence. After the obtained spread spectrum data;

If the determining module 600 determines that the user equipment maps the uplink data on the OFDM symbols, the receiving module 610 receives the mapped uplink data on the M OFDM symbols, where the uplink data is data on one OFDM symbol multiplied by the orthogonal spreading sequence. The resulting spread spectrum data.

Preferably, the orthogonal spreading sequence is a cell-specific configuration.

Correspondingly, the receiving module 610 determines the orthogonal spreading sequence according to the following steps:

Determining the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices, and notifying the user equipment; and/or

Determining an orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence information configured by the received central node, and notifying the user equipment; and/or

The orthogonal spreading sequence of the current cell is determined according to the identifier of the configuration of the cell.

Preferably, the orthogonal spreading sequence is a user-specific configuration.

Preferably, the receiving module 610 determines the orthogonal spreading sequence according to the following steps:

Autonomously configuring an orthogonal spreading sequence of the user equipment and notifying the user equipment; and/or

The orthogonal spreading sequence of the user equipment is determined according to the identity of the user equipment.

Preferably, the receiving module 610 determines the size of the transport block according to the following steps:

Preferably, the receiving module 610 is further configured to:

Before receiving the uplink data, notify the user equipment of the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter through the high layer signaling or the physical layer signaling.

Preferably, the receiving module 610 is further configured to:

After receiving the uplink transmission data, the data is subjected to symbol level despreading before the data is detected.

Based on the same inventive concept, the embodiment of the present invention further provides a method for transmitting uplink data. The method for solving the problem is similar to the user equipment in the system for transmitting uplink data. Therefore, the implementation of the method can be implemented by referring to the implementation of the device. , the repetition will not be repeated.

As shown in FIG. 7, the method for transmitting uplink data in the embodiment of the present invention includes the following steps: Step 701: The user equipment multiplies data on one subcarrier or one OFDM symbol by an orthogonal spreading sequence to obtain the spread data.

Step 702: If the data on one subcarrier is multiplied by the orthogonal spreading sequence, the user equipment maps the spread data to M subcarriers. If the data on one OFDM symbol is multiplied by the orthogonal spreading sequence. The user equipment maps the spread data to M OFDM for transmission;

Where M is the length of the orthogonal spreading sequence.

Preferably, the orthogonal spreading sequence is a cell-specific configuration.

Correspondingly, in step 701, the user equipment determines the orthogonal spreading sequence according to the following steps:

The user sets the orthogonal spreading sequence according to the home cell identity and/or the home cell configuration information.

Preferably, the orthogonal spreading sequence is a user-specific configuration.

The user equipment selects an orthogonal spreading sequence based on the user identity and/or the home cell configuration information.

Preferably, in step 702, the user equipment determines the size of the transport block according to the following steps:

The user equipment determines the size of the transport block according to the MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.

Preferably, before step 701, the method further includes:

The user equipment determines the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter according to the received high layer signaling or physical layer signaling.

Based on the same inventive concept, the embodiment of the present invention further provides a method for transmitting uplink data. The method for solving the problem is similar to the network side device in the system for transmitting uplink data. Therefore, the implementation of the method can be referred to the device. Implementation, repetition will not be repeated.

As shown in FIG. 8, the method for transmitting uplink data in the embodiment of the present invention includes the following steps:

Step 801: The network side device determines that the user equipment maps the uplink data on the M subcarriers or the OFDM symbol. Step 802: The network side device receives the mapped uplink data on the M subcarriers or the OFDM symbol, where the uplink data is a subcarrier or an OFDM. The data on the symbol is multiplied by the spread spectrum data obtained after the orthogonal spreading sequence, and M is the length of the orthogonal spreading sequence.

Specifically, if the user equipment transmits data on the M subcarriers, the network side device receives the uplink data that is mapped on the M subcarriers;

If the user equipment transmits data on M OFDM symbols, the network side device receives the mapped uplink data on the M OFDM symbols.

Preferably, the orthogonal spreading sequence is a cell-specific configuration.

Correspondingly, the network side device determines the orthogonal spreading sequence according to the following steps: The network side device determines the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices, and notifies the user equipment; and/or

The network side device determines the orthogonal spreading sequence of the current cell according to the received orthogonal spreading sequence information configured by the central node, and notifies the user equipment; and/or

The network side device # ^ determines the orthogonal spreading sequence of the current cell according to the identifier of the local cell configuration.

Preferably, the orthogonal spreading sequence is a user-specific configuration.

Correspondingly, the network side device determines the orthogonal spreading sequence according to the following steps:

The network side device independently configures the orthogonal spreading sequence of the user equipment, and notifies the user equipment; and/or

The network side device determines the orthogonal spreading sequence of the user equipment according to the identifier of the user equipment.

Preferably, the network side device determines the size of the transport block according to the following steps:

The network side device determines the size of the transport block according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.

Preferably, before step 802, the method further includes:

The network side device notifies the user equipment of the manner of transmitting the uplink data and/or the orthogonal spreading sequence parameter through high layer signaling or physical layer signaling.

Preferably, after step 802, the method further includes:

The network side device performs symbol level despreading of the data before detecting the data.

In FIG. 7 and FIG. 8, a process may be synthesized to form a method for transmitting uplink data, that is, step 701 and step 702 are performed first, and then step 801 and step 802 are performed.

The scheme of the present invention will be described in detail below by way of two examples. It is assumed that the mode corresponding to PUSCH format 2 is the solution of the present invention.

Example 1: It is necessary to reduce the number of rooms between the four districts.

Configure the PUSCH format 2 for the edge user equipment, and the PUSCH format 2 spreading code is the community agency.

The equivalent code rate corresponding to the PUSCH format 2 (including the spread spectrum effect) of the user equipment is the same as the equivalent code rate of the PUSCH format 1 configured by the user equipment, that is, the code rate corresponding to the PUSCH format 2 MCS is PUSCH format2 MCS. Corresponding code rate is 2 times.

Example 2: The system capacity needs to be increased. The PUSCH format 2 spreading code is a user equipment special, and the users mapped on the same resource are configured with different spreading codes.

The equivalent code rate corresponding to the PUSCH format 2 (including the spread spectrum effect) is the same as the equivalent code rate corresponding to the PUSCH format 1 configured by the user equipment, that is, the code rate corresponding to the PUSCH format 2 MCS is PUSCH format 2 MCS. The code rate is 2 times.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Thus, the present invention can be implemented in terms of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. The form of the case. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for transmitting uplink data, the method comprising:

Where M is the length of the orthogonal spreading sequence.

2. The method according to claim 1, wherein the orthogonal spreading sequence is a cell-specific configuration.

3. The method according to claim 2, wherein the user equipment determines the orthogonal spreading sequence according to the following steps:

The user equipment selects an orthogonal spreading sequence according to the home cell identity and/or the home cell configuration information.

4. The method according to claim 1, wherein the orthogonal spreading sequence is a user-specific configuration.

5. The method according to claim 4, wherein the user equipment determines the orthogonal spreading sequence according to the following steps:

The user equipment selects an orthogonal spreading sequence according to the user identity and/or the home cell configuration information.

6. The method according to claim 1, wherein the user equipment determines the size of the transport block according to the following steps:

The user equipment determines the size of the transport block according to a modulation and coding mode MCS level, a number of scheduled physical resource blocks, and an orthogonal spreading sequence length.

The method according to claim 1, wherein before the user equipment transmits the uplink data, the method further includes:

The user equipment determines a manner of transmitting uplink data and/or an orthogonal spreading sequence parameter according to the received high layer signaling or physical layer signaling.

8. A method for receiving uplink data, the method comprising:

The network side device determines that the user equipment maps the uplink data on the M OFDM symbols; the network side device receives the mapped uplink data on the M OFDM symbols, where the uplink data is data on one OFDM symbol multiplied by orthogonal expansion. The spread spectrum data obtained after the frequency sequence; Where M is the length of the orthogonal spreading sequence.

9. The method according to claim 8, wherein the orthogonal spreading sequence is a cell-specific configuration.

10. The method according to claim 9, wherein the network side device determines the orthogonal spreading sequence according to the following steps:

Determining, by the network side device, the orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information exchanged between the network side devices, and notifying the user equipment; and/or

Determining, by the network side device, the orthogonal spreading sequence of the current cell according to the received orthogonal spreading sequence information configured by the central node, and notifying the user equipment; and/or

The network side device #^ determines the orthogonal spreading sequence of the current cell according to the identifier of the local cell configuration.

11. The method according to claim 8, wherein the orthogonal spreading sequence is a user-specific configuration.

12. The method according to claim 11, wherein the network side device determines the orthogonal spreading sequence according to the following steps:

The network side device autonomously configures an orthogonal spreading sequence of the user equipment, and notifies the user equipment; and/or the network side device determines an orthogonal spreading sequence of the user equipment according to the identifier of the user equipment.

13. The method according to claim 8, wherein the network side device determines the size of the transport block according to the following steps:

The network side device determines the size of the transport block according to a modulation coding mode MCS level, a number of scheduled physical resource blocks, and an orthogonal spreading sequence length.

The method of claim 8, wherein before the network side device receives the uplink data, the method further includes:

The network side device notifies the user equipment of the manner of transmitting uplink data and/or the orthogonal spreading sequence parameter by using high layer signaling or physical layer signaling.

The method according to claim 8, wherein after the network side device receives the uplink transmission data, the method further includes:

The network side device performs symbol level despreading on the data before detecting the data.

16. A user equipment for transmitting uplink data, the user equipment comprising:

a spread spectrum module, configured to multiply data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain spread spectrum data;

a transmission module, configured to: if multiplying data on one subcarrier by an orthogonal spreading sequence, mapping the spread data to M subcarriers; if multiplying data on one OFDM symbol by an orthogonal spreading sequence And mapping the spread data to M OFDM transmission;

Where M is the length of the orthogonal spreading sequence.

The user equipment according to claim 16, wherein the orthogonal spreading sequence is a cell-specific configuration.

The user equipment according to claim 17, wherein the spreading module determines the orthogonal spreading sequence according to the following steps:

The user equipment according to claim 16, wherein the orthogonal spreading sequence is a user-specific configuration.

The user equipment according to claim 19, wherein the spreading module determines the orthogonal spreading sequence according to the following steps:

The user equipment according to claim 16, wherein the transmission module determines the size of the transport block according to the following steps:

The size of the transport block is determined according to the modulation coding mode MCS level, the number of scheduled physical resource blocks, and the length of the orthogonal spreading sequence.

The user equipment according to claim 16, wherein the spreading module is further configured to: determine, according to the received high layer signaling or physical layer signaling, a manner of transmitting uplink data and/or orthogonal spreading Sequence parameters.

A network side device that receives uplink data, where the network side device includes:

a determining module, configured to determine that the user equipment maps uplink data on the M subcarriers;

a receiving module, configured to receive the mapped uplink data on the M subcarriers, where the uplink data is the spread data obtained by multiplying the data on the subcarrier by the orthogonal spreading sequence;

Or,

a determining module, configured to determine that the user equipment maps uplink data on M OFDM symbols;

a receiving module, configured to receive the mapped uplink data on the M OFDM symbols, where the uplink data is the spread data obtained by multiplying the data on one OFDM symbol by the orthogonal spreading sequence;

Where M is the length of the orthogonal spreading sequence.

The network side device according to claim 23, wherein the orthogonal spreading sequence is a cell-specific configuration.

The network side device according to claim 24, wherein the receiving module determines the orthogonal spreading sequence according to the following steps:

Determining an orthogonal spreading sequence of the current cell according to the orthogonal spreading sequence configuration information of the interaction between the network side devices, and notifying the user equipment; and/or Determining, according to the received orthogonal spreading sequence information of the central node, the orthogonal spreading sequence of the current cell, and notifying the user equipment; and/or

The network side device according to claim 23, wherein the orthogonal spreading sequence is a user-specific configuration.

The network side device according to claim 26, wherein the receiving module determines the orthogonal spreading sequence according to the following steps:

The network side device according to claim 23, wherein the receiving module determines the size of the transport block according to the following steps:

The network side device according to claim 23, wherein the receiving module is further configured to: notify the user equipment to transmit uplink data by using high layer signaling or physical layer signaling before receiving uplink data. And/or orthogonal spreading sequence parameters.

The network side device according to claim 23, wherein the receiving module is further configured to: after receiving the uplink transmission data, performing symbol level despreading on the data before detecting the data.

31. A system for transmitting uplink data, characterized in that the system comprises:

a user equipment, configured to multiply data on one subcarrier or one orthogonal frequency division multiplexing OFDM symbol by an orthogonal spreading sequence to obtain data after spreading, if multiplying data on one subcarrier by orthogonal expansion a frequency sequence, the spread data is mapped on M subcarriers, and if the data on one OFDM symbol is multiplied by the orthogonal spreading sequence, the spread data is mapped on M OFDM transmissions; where M is Orthogonal spreading sequence length;

The network side device is configured to receive the mapped uplink data on the M subcarriers or the OFDM symbol.