WO2016183739A1

WO2016183739A1 - Frequency resource determination method and apparatus

Info

Publication number: WO2016183739A1
Application number: PCT/CN2015/079082
Authority: WO
Inventors: 唐浩
Original assignee: 华为技术有限公司
Priority date: 2015-05-15
Filing date: 2015-05-15
Publication date: 2016-11-24
Also published as: CN107534971A; CN107534971B

Abstract

Provided is a frequency resource determination method. In the method, frequency hopping is not performed between all the sub-frames in the same transmission time interval bundle, and frequency hopping is performed between different transmission time interval bundles. Also provided is a frequency resource determination method. In the method, frequency resource positions of all the sub-frames in a sub-band in a transmission time interval bundle are the same, and frequency hopping is performed between different sub-bands in a transmission time interval bundle. Also provided is an apparatus corresponding to the method. In the technical solution provided in the application, a TTI bundling technique can be correctly combined with a frequency hopping technique, and the transmission quality of uplink data is improved, thereby improving the experience with a user equipment.

Description

Method and device for determining frequency resource

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a frequency resource determining method and apparatus.

Background technique

In the wireless communication system, in order to improve the transmission quality of the uplink data of the user equipment (UE) on the uplink between the serving base station and the serving base station, the transmission time interval bundling (TTI Bundling) is performed on the one hand. The user equipment sends the uplink data carrying the same service data information to the serving base station at a plurality of consecutive transmission time intervals to reduce the time delay caused by the uplink data sent by the user equipment being retransmitted multiple times. On the other hand, the user equipment uses a hopping technique to retransmit the same uplink data to the serving base station in different frequency domain locations, and improves the transmission quality of the uplink data by using the obtained frequency diversity gain.

However, when combining TTI Bundling technology with frequency hopping technology, the prior art does not provide a solution that can accurately determine the location of TTI Bundling frequency resources.

Summary of the invention

The embodiment of the invention provides a method and a device for determining a frequency resource, which are used to solve the problem of determining a TTI Bundling frequency resource.

A first aspect of the embodiments of the present invention provides a method for determining a frequency resource, where the method is used for a user equipment or a base station that serves the user equipment, and includes:

Determining a frequency hopping mode of a transmission time interval binding that includes multiple subframes is an Inter-bundle hopping frequency hopping;

Determining, in the frequency hopping mode, a transmission time interval binding that includes multiple subframes a frequency resource location, where the frequency resource location bound to the transmission time interval includes a frequency resource location of the multiple subframes, wherein a frequency resource location of each of the multiple subframes is equal to a frequency resource location of the subframe k, The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and the frequency hopping variable of the subframe k is determined by a time domain location of the subframe k, and the subframe k is One of the plurality of subframes.

Based on the first aspect, in a first possible implementation of the first aspect,

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, and n _s is the slot number of one of the slots included in the subframe k.

Based on the first aspect, in a second possible implementation of the first aspect,

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data.

According to a second possible implementation of the first aspect, in a third possible implementation of the first aspect, a frequency hopping variable of the subframe k is caused by a time domain location of the subframe k and a current transmission of the uplink data Determined by the number of times, including:

Where i is the frequency hopping variable of the subframe k, n _s is the slot number of one of the slots included in the subframe k, and CURRENT_TX_NB is the current number of transmissions of the uplink data.

Based on the first aspect, in a fourth possible implementation of the first aspect,

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.

Based on the fourth possible implementation of the first aspect, in a fifth possible implementation of the first aspect,

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval, including:

Where i is the frequency hopping variable of the subframe k, SFN _k is the system frame number of the radio frame in which the subframe k is located, and n _s is the slot number of one of the slots included in the subframe k, TTI_BUNDLING_SIZE is the size of the transmission time interval binding, and K is a fixed constant.

In any of the fifth possible implementations of the first aspect to the first aspect, in a sixth possible implementation of the first aspect,

The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:

The frequency resource location of the subframe k is determined by the following formula:

among them,

Where n _PRB is the frequency resource location of the subframe k, and N _sb is the number of subbands used for physical uplink shared channel transmission.

For the number of physical resource blocks included in the subband, n _VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station,

For the number of physical resource blocks occupied by the physical uplink control channel, i is the frequency hopping variable of the subframe k, and f _hop (i) is the subband offset corresponding to the subframe k, f _m (i) The mirror value corresponding to the subframe k.

A second aspect of the embodiments of the present invention provides a frequency resource determining method, where the method uses The base station of the user equipment or the user equipment, including:

Determining the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;

Determining, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands, where the frequency resource locations of all subframes in the subband m are the same, and the frequency resource location of the subband m is equal to the The frequency resource position of the sub-frame k in the sub-band m, the sub-band m is one of the N sub-bands, and the sub-frame k in the sub-band m is one of the sub-bands m.

Based on the second aspect, in a first possible implementation of the second aspect,

The frequency resource location of the subframe k in the subband m is determined by a frequency hopping variable of the subframe k in the subband m;

The frequency hopping variable of the subframe k in the subband m is determined by the following formula:

or

Where i is the frequency hopping variable of the subframe k in the subband m, n _s is the slot number of one of the slots included in the subframe k of the subband m, and CURRENT_TX_NB is the current transmission of the uplink data The number of times; SFN _k is the system frame number of the radio frame in which the subframe k in the subband m is located; Intra_bundle_size is the frequency hopping interval, and K is a fixed constant.

Based on the second aspect or the first possible implementation of the second aspect, in a second possible implementation of the second aspect,

among them,

Based on the second aspect, in a third possible implementation of the second aspect,

When m is an odd number, the frequency resource position of the sub-band m is different from the frequency resource position of the sub-band m when m is an even number.

According to a third possible implementation of the second aspect, in a fourth possible implementation of the second aspect,

When m is an odd number, the frequency resource position of the sub-band m is indicated by the base station

When m is an even number, the frequency resource position of the sub-band m is determined by the following formula:

among them,

The number of physical resource blocks occupied by the physical uplink control channel,

When m is an odd number, the sub-band m is a frequency resource location, and RB _START is a location of a physical resource block indicated by the base station,

The number of physical resource blocks used for physical uplink shared channel transmission,

The frequency resource position at which the sub-band m is when m is an even number.

According to a third possible implementation of the second aspect, in a fifth possible implementation of the second aspect,

When m is an even number, the frequency resource position of the sub-band m is indicated by the base station

When m is an odd number, the frequency resource position of the sub-band m is determined by the following formula:

among them,

The frequency resource position of the sub-band m when m is an even number.

A third aspect of the embodiments of the present invention provides a device for determining a frequency resource, where the device user equipment or a base station that serves the user equipment is characterized by:

a first determining unit, configured to determine a frequency hopping mode of the transmission time interval binding of the multiple subframes as an Inter-bundle hopping frequency hopping;

a second determining unit, configured to determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of the multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes the multiple subframes a frequency resource location, where a frequency resource location of each of the plurality of subframes is equal to a frequency resource location of the subframe k, and a frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, The frequency hopping variable of the sub-frame k is determined by the time domain position of the sub-frame k, and the sub-frame k is one of the plurality of sub-frames.

Based on the third aspect, in the first possible implementation of the third aspect,

Based on the third aspect, in a second possible implementation of the third aspect,

According to a second possible implementation of the third aspect, in a third possible implementation of the third aspect, the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current transmission of the uplink data. Determined by the number of times, including:

Based on the third aspect, in a fourth possible implementation of the third aspect,

Based on a fourth possible implementation of the third aspect, in a fifth possible implementation of the third aspect,

In any of the fifth possible implementations of the third aspect to the third aspect, in a sixth possible implementation of the third aspect,

among them,

A fourth aspect of the embodiments of the present invention provides a frequency resource determining apparatus, where the device is a user equipment or a base station that serves the user equipment, and includes:

a first determining unit, determining that the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;

a second determining unit, configured to determine the N subband neutrons in the frequency hopping mode a frequency resource location with m, the frequency resource locations of all subframes in the subband m are the same, the frequency resource location of the subband m is equal to the frequency resource location of the subframe k in the subband m, the subband m is one of the N subbands, and the subframe k in the subband m is one of the subbands m.

Based on the fourth aspect, in a first possible implementation manner of the fourth aspect,

or

Based on the fourth aspect or the first possible implementation of the fourth aspect, in a second possible implementation of the fourth aspect,

among them,

Based on the fourth aspect, in a third possible implementation of the fourth aspect,

According to a third possible implementation of the fourth aspect, in a fourth possible implementation of the fourth aspect,

among them,

According to a third possible implementation of the fourth aspect, in a fifth possible implementation of the fourth aspect,

among them,

The frequency resource position of the sub-band m when m is an even number.

A technical solution provided by the embodiment of the present invention can implement frequency-hopping between transmission time interval bundling or transmission time interval binding between intra-bind hopping, thereby correctly combining TTI bundling technology and frequency hopping technology. Improve the transmission quality of uplink data, thereby improving the user experience.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also determine other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of a frame structure of a transmission time interval binding in an LTE system;

2A is a schematic flow chart of a method for determining a frequency resource;

2B and 2C are schematic diagrams showing a position of a frequency resource;

FIG. 3A is a schematic flowchart diagram of a method for determining a frequency resource;

3B and 3C are schematic diagrams showing a position of a frequency resource;

4 is a schematic structural diagram of an apparatus 400 for frequency resource determination;

FIG. 5 is a schematic structural diagram of an apparatus 500 for frequency resource determination.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments determined by those skilled in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

In the embodiment of the present invention, the base station may be an evolved Node B (eNB). The base station can provide communication coverage for UEs in a particular geographic area. The base station may be a macro base station and a small base station according to the size of the communication coverage, and the small base station may include a micro base station, a pico base station, and a home base station.

In an embodiment of the invention, the UE is located in a particular geographic area covered by the communication provided by the base station. The UE can be static or mobile. The UE may be referred to as a terminal, a mobile station (Mobile Station, MS), a subscriber unit (Subscriber Unit), a station (Station), and the like. The UE can be a Cellular Phone, a Personal Digital Assistant (PDA), a wireless modem (Modem), a wireless communication device, a handheld device, a laptop computer, a cordless phone (Cordless). Phone), Wireless Local Loop (WLL) station, etc.

Various embodiments of the present invention are applicable to long term evolution (LTE) systems. In order to enable a person skilled in the art to better understand the technical solution of the present invention, FIG. 1 shows a schematic diagram of a frame structure of a transmission time interval binding in an LTE system.

When the UE sends uplink data to the base station in a certain frequency and a certain subframe allocated to the UE by the base station serving the UE, the base station may not receive or cannot correctly decode due to the low uplink coverage strength. The uplink data (for example, voice data) sent by the UE is out. The TTI Bundling technology transmits the uplink data carrying the same information to form a plurality of uplink data of different coding forms (still carrying the same information) in consecutive uplink subframes, and the consecutive subframes constitute a transmission time interval. Therefore, as shown in Figure 1, TTI binding 1 (consisting of subframes 0-3) and TTI binding 2 (consisting of subframes 6-9) are composed of 4 consecutive uplink subframes, TTI binding 1 and TTI binding 2 has the same frequency domain location. In an LTE system, one TTI corresponds to one subframe. The number of TTIs included in one transmission time interval binding may be determined by the transmission time interval binding size TTI_BUNDLE_SIZE, and the TTI_BUNDLE_SIZE may be configured by the base station for the UE. When the number of consecutive uplink subframes is greater than or equal to 2 (it is deduced that the minimum value of TTI_BUNDLE_SIZE is configured to be 2), the transmission time interval binding can be implemented. In the current LTE system, the base station sets the size of TTI_BUNDLE_SIZE to 4, but does not exclude other values. After the transmission of the binding time interval is completed, the base station feeds back an ACK (correct reception)/NACK (incorrect reception) for the transmission of the transmission time interval binding, without binding the transmission time interval. Each TTI in the feedback ACK/NACK. When the transmission of a TTI Bundle is not correctly received by the base station, the UE may use the next transmission time interval binding to retransmit the uplink data. The initial transmission and at least one retransmission of the transmission time interval binding of the uplink data carrying the same information are handled by the same hybrid automatic repeat request (HARQ) process. However, even if the transmission time interval binding technology is adopted, the base station still needs the UE to perform multiple retransmissions of the transmission time interval binding due to the poor quality of the uplink coverage, which undoubtedly causes an increase in the time delay for processing the uplink data. Obtaining the frequency diversity gain according to the frequency hopping technology can improve the accuracy of the base station acquiring the uplink data, thereby reducing the number of retransmissions of the UE, and reducing the time delay of the uplink data. Therefore, how to determine the frequency resource location bound by the transmission time interval is a technical problem discussed in various embodiments of the present invention.

An embodiment of the present invention provides a method for determining a frequency resource, such as a method for determining a frequency resource, as shown in FIG. 2A, where the method is used for a UE or a base station that serves the UE, and the method includes the following content.

201. Determine a frequency hopping mode of the transmission time interval binding that includes multiple subframes as an Inter-bundle hopping frequency hopping.

In 201, the base station may determine that the frequency hopping mode configured for the UE is a frequency hopping between transmission time intervals. The frequency hopping mode may be that the base station randomly selects the UE, or the frequency hopping mode may be selected by the base station according to channel state information reported by the UE, or may be selected according to the number of UE cell handovers. . For example, if the channel state information indicates that the channel quality between the UE and the base station is greater than a certain preset threshold, then the transmission time interval bundling is selected. If the number of UE cell handovers is less than a certain threshold, the frequency hopping between the transmission time interval bindings is selected.

The eNB may send RRC signaling to the UE by using a radio resource control (RRC) connection established between the UE and the base station, where the RRC signaling is used to indicate the frequency hopping The mode is mode indication information for frequency hopping between transmission time intervals. For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE switches to the base station, the base station may pass the RRC letter. Let the mode indication information be sent.

The base station may also send downlink control information (DCI) to the UE in the physical downlink control channel, where the DCI is used to indicate that the frequency hopping mode is a frequency hopping between transmission time intervals. Mode indication information.

The UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals.

202. Determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes a frequency resource location of the multiple subframes, where a frequency resource location of the multiple subframes is equal to a frequency resource location of the subframe k, and a frequency resource location of the subframe k is represented by a frequency hopping variable of the subframe k It is determined that the frequency hopping variable of the subframe k is determined by the time domain position of the subframe k, and the subframe k is one of the multiple subframes.

The base station or the UE determines that the frequency hopping mode is a frequency hopping between transmission time intervals, and the base station or the UE may learn that there is a frequency hopping between the transmission time interval bindings, at one transmission time interval. The frequency resource locations of all subframes in the binding are the same, and there is no frequency hopping between subframes and subframes in a transmission time interval binding. Therefore, the frequency resource location bound by one transmission time interval is determined by the frequency resource location of one subframe within the transmission time interval (which may be assumed to be subframe k for convenience of reference). The frequency resource location bound by the transmission time interval may be determined according to the frequency hopping variable of the subframe k, and the frequency hopping variable of the subframe k is related to the time domain location of the subframe k.

As an example, the frequency hopping variable of the subframe k can be determined only by the time domain position of the subframe k, and the specific formula is as follows:

As another example, the frequency hopping variable of the subframe k may be determined by the time domain location of the subframe k and the current number of transmissions of the uplink data to be sent by the UE, and the specific formula is as follows:

Where i is the frequency hopping variable of the subframe k, n _s is the slot number of one slot included in the subframe k, and CURRENT_TX_NB is the current number of transmissions of the uplink data.

It should be noted that one subframe includes two slots, and the slot number of the subframe k takes two consecutive values from 0 to 19. The frequency hopping variable of the subframe k calculated using the slot number of any one of the slots included in the subframe k according to the above formula is unique. The current number of transmissions of the uplink data CURRENT_TX_NB is the number of times the uplink data is retransmitted by the UE. in case The uplink data is initially transmitted by the UE, and the current transmission number of uplink data CURRENT_TX_NB is 0.

As another example, the frequency hopping variable of the subframe k may be determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding. The specific formula is as follows:

Where i is the frequency hopping variable of the subframe k, SFN _k is the system frame number of the radio frame in which the subframe k is located, and n _s is one of the time slots included in the subframe k of the subband m The slot number, TTI_BUNDLING_SIZE is the size of the transmission time interval binding, and K is a fixed constant.

For example, K is 10 or 20.

According to the existing LTE system, the system frame number is taken from 0 to 1023, and the frequency hopping variable i is taken from 0 to 9, or 0 to 19, so the value of the frequency hopping variable is limited to the range by K, so that Compatible with the calculation of the frequency hopping variable i of the existing LTE system.

Calculating a frequency hopping variable of the subframe k, determining a frequency resource location of the subframe k according to a frequency hopping variable of the subframe k, and the specific formula is as follows:

among them,

Step 202: The base station and the UE may obtain a frequency resource location where the transmission time interval is bound in a transmission transmission time interval binding intra-hop frequency. The UE may retransmit the uplink data to the base station by using the physical uplink shared channel at the frequency resource location bound to the transmission interval, where the base station passes the physical uplink shared channel at the frequency resource location bound to the transmission interval. Receiving uplink data retransmitted by the UE.

According to the method shown in FIG. 2A, a schematic diagram of the frequency resource locations shown in FIGS. 2B and 2C can be obtained. As shown in FIG. 2B and FIG. 2C, in the case of frequency hopping between transmission time intervals, all the subframes in the same transmission time interval are not hopped, and hops between adjacent transmission time interval bindings. Frequency, the frequency resource location bound to each transmission time interval is determined by the method shown in FIG. 2A, and the time domain location in each transmission time interval binding may be indicated by the base station by RRC signaling or DCI (the base station may indicate At least one of each transmission time interval binding, thereby obtaining a physical resource location bound for each transmission time interval.

In the embodiment of the present invention, when the frequency hopping mode is frequency hopping between transmission time interval bindings, multiple subframes included in one transmission time interval binding occupy the same frequency resource location, and therefore, the transmission time interval is bound. The frequency resource location is equal to the frequency resource location of the subframe k in the multiple subframes, and the frequency resource location bound by the transmission time interval can be obtained according to the frequency hopping variable of the subframe k. The technical solution provided by the embodiment of the present invention can implement frequency hopping between all subframes in the same transmission time interval binding, and frequency hopping between different transmission time interval bindings, thereby correctly implementing TTI bundling technology and hopping. The combination of frequency technologies can improve the transmission quality of uplink data, thereby improving the user equipment experience.

Another aspect of the present invention provides a method for determining a frequency resource, such as a method for determining a frequency resource, as shown in FIG. 3, the method is used for a user equipment or a base station serving the user equipment, and the method includes The following content.

301. Determine a frequency hopping mode in which the transmission time interval is bound to a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands.

In 301, the base station may determine that the frequency hopping mode configured for the UE is a transmission time interval binding inner-binding frequency hopping. The frequency hopping mode may be that the base station randomly selects the UE, or the frequency hopping mode may be selected by the base station according to channel state information reported by the UE, or may be selected according to the number of UE cell handovers. . For example, if the channel state information indicates that the channel quality between the UE and the base station is less than a certain preset threshold, then the transmission time interval bundling is selected. If the number of UE cell handovers is greater than a certain threshold, the frequency hopping between the transmission time interval bindings is selected.

The eNB may send RRC signaling to the UE by using a radio resource control RRC connection established between the UE and the base station, where the RRC signaling carries a signal indicating that the frequency hopping mode is tied to a transmission time interval. Mode indication information between the inbound and the binding. For example, when the UE has initially accessed the base station through a random access procedure, when the UE fails to the radio link of the base station, or when the UE occurs to switch to the base station, The base station may send the mode indication information by using RRC signaling.

The base station may also send a DCI to the UE in a physical downlink control channel, where the DCI carries mode indication information for indicating that the frequency hopping mode is a binding time interval binding inner-binding. For example, when the UE initially accesses the base station by using a random access procedure, the base station carries the mode indication information in the DCI sent in response to the UE.

The UE may determine, according to the received mode indication information, that the frequency hopping mode is a transmission time interval binding inner-binding frequency hopping.

302. Determine, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands. The frequency resource locations of all subframes in the subband m are the same, and the frequency resource location of the subband m Equal to the frequency resource location of the subframe k in the subband m, the subband m is one of the N subbands, and the subframe k in the subband m is one of the subbands m.

The base station or the UE determines that the frequency hopping mode is a transmission time interval binding intra-bundling frequency hopping, and the base station or the UE may learn that a transmission time interval binding is composed of N subbands. Each of the first N-1 subbands is composed of hopping intervals of Y subframes. Since the total number of all subframes in the transmission time interval binding may not be divisible by Y, the number of subframes constituting the last subband is the total number of subframes in one transmission time interval binding minus Y*(N-1). The frequency resource positions of all subframes in each subband are the same (that is, there is no frequency hopping between subframes in one subband), and the different subbands calculate the frequency resource locations of different subbands by the frequency resource location formula (may be the same, May be different) to achieve frequency hopping between subbands. The base station or the UE determines a frequency resource location of one subframe in one subband (eg, subframe k in the subband m), and determines a frequency resource location of the subband.

It should be noted that the hopping interval Y is configured by the base station, and the eNB may carry the hopping interval Y in RRC signaling or DCI and send the hopping interval to the UE.

As an example, the frequency resource position of the subframe k in the subband m is determined by the frequency hopping variable of the subframe k in the subband m; the frequency hopping variable of the subframe k in the subband m is determined by the following formula determine:

or

It should be noted that one subframe includes two slots, and the slot number of the subframe k is in the value Two consecutive values from 0 to 19. The frequency hopping variable of the subframe k calculated using the slot number of any one of the slots included in the subframe k according to the above formula is unique.

As an example, the frequency resource location of the subframe k is determined according to the frequency hopping variable of the subframe k, and the specific frequency resource location formula is as follows:

among them,

As another example, unlike the above example, the frequency resource location of the subband m may not be determined by the frequency resource location of the subframe k in the subband m. In this example, the N subbands in a transmission time interval binding include an odd subband and an even subband, an odd subband and an even subband frequency resource position, thereby implementing a transmission time interval binding inner-bundle jump. frequency. Optionally, the frequency resource locations of all the even subbands in the multiple transmission time interval bindings are the same, and the frequency resource locations of all the odd subbands are the same. In this case, the even subbands in the transmission time interval binding are determined. The frequency resource locations of the odd subbands can obtain the frequency resource locations of the even subbands and the odd subbands in all the transmission time interval bindings.

Optionally, the frequency resource location of an odd subband is indicated by the base station

The frequency resource position of the even subband is determined by the following formula:

Optionally, the frequency resource location of the even subband is indicated by the base station

The frequency resource position of the odd subband is determined by the following formula:

In the above formula,

In step 302, the base station and the UE may obtain a frequency resource location where the transmission time interval is bound in a transmission transmission time interval binding intra-hop frequency. The UE may retransmit the uplink data to the base station by using the physical uplink shared channel at the frequency resource location bound to the transmission interval, where the base station passes the physical uplink shared channel at the frequency resource location bound to the transmission interval. Receiving uplink data retransmitted by the UE.

According to the method shown in FIG. 3A, a schematic diagram of a frequency resource position shown in FIG. 3B and FIG. 3C can be obtained. As shown in FIG. 3B and FIG. 3C, in the case that the transmission time interval is bound to the intra-bundle frequency hopping, the frequency resource positions of all the subframes in one subband within one transmission time interval are the same, and one transmission time interval is tied. Frequency hopping between different subbands, the frequency resource location bound to each transmission time interval is determined by the method shown in FIG. 3A, and the time domain location in each transmission time interval binding may be RRC by the base station. A command or DCI indication (the base station may indicate at least one of each transmission time interval binding) to obtain a physical resource location bound for each transmission time interval.

The technical solution provided by the embodiment of the present invention can implement the same frequency resource location of all subframes in a subband within one transmission time interval binding, and frequency hopping between different subbands within one transmission time interval, thereby correctly Combining TTI bundling technology with frequency hopping technology can improve the transmission quality of uplink data, thereby improving the user equipment experience.

Another aspect of an embodiment of the present disclosure provides a device 400 for frequency resource determination, such as the structure of the device 400 shown in FIG. 4, which may be a user equipment or a base station serving the user equipment, the device 400 includes a first determining unit 401 and a second determining unit 402.

The first determining unit 401 is configured to determine that the frequency hopping mode of the transmission time interval binding of the multiple subframes is a frequency hopping between transmission time intervals.

The first determining unit 401 is used to implement the step 201 in the foregoing method embodiment, and the step 201 and the description of the step 201 can be implemented by the first determining unit 401.

a second determining unit 402, configured to determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of the multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes the multiple subframes a frequency resource location, wherein a frequency resource location of each of the plurality of subframes is equal to a frequency resource location of the subframe k, the subframe k The frequency resource location is determined by the frequency hopping variable of the subframe k, the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and the subframe k is the multiple subframes One of the sub-frames.

The second determining unit 402 is used to implement the foregoing method, and the step 202 and the description of the step 202 are implemented by the first determining unit 402. For details, refer to the description of the method embodiment.

Optionally, the device may further include a transceiver unit 403. The transceiver unit 403 is configured to send and receive any information transmitted between the base station and the UE, such as uplink data or other control information (RRC signaling or DCI, etc.).

When the device is a base station, the base station may determine, by using the first determining unit 401, that the frequency hopping mode is a frequency hopping between transmission time intervals, and may be randomly selected by the first determining unit 401 from multiple frequency hopping modes. The multiple frequency hopping modes may include at least a transmission time interval binding frequency hopping and a transmission time interval binding inner-binding frequency hopping.

The base station may use the transceiver unit 403 to send RRC signaling to the UE on the RRC connection established between the UE and the base station, where the RRC signaling carries the indication frequency hopping mode as the transmission time interval binding. Inter-frequency hopping mode indication information. For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE generates a handover to the base station, the base station uses the transceiver. The unit 403 sends the mode indication information by using RRC signaling.

The base station may also use the transceiver unit 403 to send a DCI to the UE in a physical downlink control channel, where the DCI carries a mode indication for indicating that the frequency hopping mode is a frequency hopping between transmission time intervals. information.

After the base station determines the frequency hopping mode, the base station may determine, by using the second determining unit 402, a frequency resource location bound to each transmission time interval, and may use the transceiver unit 403 at the determined frequency. The uplink data retransmitted by the UE is received at a resource location.

When the device is the UE, the UE may receive, by using the transceiver unit 403, the mode indication information sent by the base station;

The UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals by using the first determining unit 401, and determine, by using the second determining unit 402, each transmission time. The frequency resource location to which the interval is bound. The UE may retransmit the uplink data to the base station by using the transceiver unit 403 at the determined frequency resource location.

It should be noted that the functions that the first determining unit 401 and the second determining unit 402 can implement may be integrated in one or more processors of the device 400. The functions that the transceiver unit 403 can implement may be specifically transmitted and received by the device 400. Device. Those skilled in the art can understand that in order to implement the technical solution in the embodiments of the present invention, the device 400 may further include a memory, an antenna, and other electronic circuits.

The apparatus 400 provided by the embodiment of the present invention can implement frequency hopping between all subframes in the same transmission time interval binding, and frequency hopping between different transmission time interval bindings, thereby correctly implementing TTI bundling technology and hopping. The combination of frequency technologies can improve the transmission quality of uplink data, thereby improving the user equipment experience.

Another aspect of an embodiment of the present invention provides an apparatus 500 for frequency resource determination, which may be a user equipment or a base station serving the user equipment. The apparatus 500 includes a first determining unit 501 and a second determining unit 502.

The first determining unit 501 is configured to determine that the frequency hopping mode of the transmission time interval binding is a transmission time interval binding inner-binding frequency hopping, where the transmission time interval binding includes N sub-bands, and N is greater than or equal to An integer of 2.

The second determining unit 502 is configured to determine, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands, where frequency resources of all subframes in the subband m are the same. The frequency resource location of the subband m is equal to the frequency resource location of the subframe k in the subband m, and the subband m is one of the N subbands, the subband m The neutron frame k is one of the sub-bands m.

The first determining unit 501 is configured to implement step 301 in the foregoing method embodiment, and the second determining unit 502 is configured to implement step 302 in the foregoing method embodiment. For the description of step 301 and the description of step 302, reference may be made to the method embodiment.

Optionally, the device 500 further includes a transceiver unit 503. The transceiver unit 403 is configured to send and receive any information transmitted between the base station and the UE, such as uplink data or other control information (RRC signaling or DCI, etc.).

When the device is a base station, the base station may determine, by using the first determining unit 501, that the frequency hopping mode is the intra-bind hopping of the transmission time interval, and the first determining unit 401 may be configured from multiple hopping modes. Randomly selected, the multiple frequency hopping modes may include at least a transmission time interval binding frequency hopping and a transmission time interval binding inner-binding frequency hopping.

The base station may use the transceiver unit 503 to send RRC signaling to the UE on the RRC connection established between the UE and the base station, where the RRC signaling carries the indication frequency hopping mode as the transmission time interval binding. Inter-frequency hopping mode indication information. For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE generates a handover to the base station, the base station uses the transceiver. The unit 503 sends the mode indication information by using RRC signaling.

The base station may also use the transceiver unit 503 to send a DCI to the UE in a physical downlink control channel, where the DCI carries a mode indication for indicating that the frequency hopping mode is a frequency hopping between transmission time intervals. information.

After the base station determines the frequency hopping mode, the base station may determine, by using the second determining unit 502, a frequency resource location bound to each transmission time interval, and may use the transceiver unit 503 at the determined frequency. The uplink data retransmitted by the UE is received at a resource location.

When the device is the UE, the UE may receive, by using the transceiver unit 503, the mode indication information sent by the base station;

The UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals by using the first determining unit 501, and determine, by using the second determining unit 502, each transmission time. The frequency resource location to which the interval is bound. The UE may retransmit the uplink data to the base station by using the transceiver unit 503 at the determined frequency resource location.

It should be noted that the functions that the first determining unit 501 and the second determining unit 502 can implement may be integrated in one or more processors of the device 500. The functions that the transceiver unit 503 can implement may be specifically transmitted and received by the device 500. Device. Those skilled in the art can understand that in order to implement the technical solution in the embodiments of the present invention, the device 500 may further include a memory, an antenna, and other electronic circuits.

The apparatus 500 provided by the embodiment of the present invention can implement the same frequency resource location of all subframes in one subband within one transmission time interval binding, and frequency hopping between different subbands within one transmission time interval, thereby correctly Combining TTI bundling technology with frequency hopping technology can improve the transmission quality of uplink data, thereby improving the user equipment experience.

Those skilled in the art can understand that in the embodiment of the present invention, information and data can be represented by using any technology, for example, data, instructions, commands, information, signals. , Bit, Symbol, and Chip can pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination of the above.

The Illustrative Logical blocks, units, and steps listed in the embodiments of the present invention may also be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the various illustrative components, units, and steps described above have generally described their functionality. Such work Whether it is implemented by hardware or software depends on the specific application and the design requirements of the entire system. A person skilled in the art can implement the described functions using various methods for each specific application, but such implementation should not be construed as being beyond the scope of the embodiments of the present invention.

The various illustrative logic blocks, or units, described in the embodiments of the invention may be implemented by a general purpose processor, a digital signal processor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic. Devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the functions described. A general purpose processor may be a microprocessor. Alternatively, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.

The steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processor, or a combination of the two. The software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art. Illustratively, the storage medium can be coupled to the processor such that the processor can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium can also be integrated into the processor. The processor and the storage medium may be disposed in an ASIC, and the ASIC may be disposed in the user terminal. Alternatively, the processor and the storage medium may also be disposed in different components in the user terminal.

In one or more exemplary designs, the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium. Computer readable medium including computer storage medium A communication medium that facilitates the transfer of computer programs from one place to another. The storage medium can be any available media that any general purpose or special computer can access. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general purpose or special processor. In addition, any connection can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server or other remote source through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is also included in the defined computer readable medium. The disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

The above description of the specification of the present invention may enable any of the art to utilize or implement the present invention. Any modifications based on the disclosure should be considered as obvious in the art. The basic principles described herein can be applied to other variants. Without departing from the spirit and scope of the invention. Therefore, the present disclosure is not limited to the described embodiments and designs, but may be extended to the maximum extent consistent with the principles of the invention and the novel features disclosed.

Claims

A method for determining a frequency resource, where the method is used for a user equipment or a base station that serves the user equipment, and the method includes:

Determining a frequency hopping mode of a transmission time interval binding that includes multiple subframes is an Inter-bundle hopping frequency hopping;

Determining, in the frequency hopping mode, a frequency resource location where a transmission time interval of a plurality of subframes is bound, where the frequency resource location bound by the transmission time interval includes a frequency resource location of the multiple subframes, where The frequency resource location of each subframe of the plurality of subframes is equal to the frequency resource location of the subframe k, and the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, where the subframe k The frequency hopping variable is determined by the time domain location of the subframe k, and the subframe k is one of the plurality of subframes.
The method of claim 1 wherein

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, and n s is the slot number of one of the slots included in the subframe k.
The method of claim 1 wherein

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data.
The method according to claim 3, wherein the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data, including:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, n s is the slot number of one of the slots included in the subframe k, and CURRENT_TX_NB is the current number of transmissions of the uplink data.
The method of claim 1 wherein

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.
The method of claim 5 wherein:

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval, including:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, SFN k is the system frame number of the radio frame in which the subframe k is located, and n s is the slot number of one of the slots included in the subframe k, TTI_BUNDLING_SIZE is the size of the transmission time interval binding, and K is a fixed constant.
A method according to any of claims 1-6, wherein

The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:

The frequency resource location of the subframe k is determined by the following formula:

among them,

Where n PRB is the frequency resource location of the subframe k, and N sb is the number of subbands used for physical uplink shared channel transmission.
For the number of physical resource blocks included in the subband, n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station,
For the number of physical resource blocks occupied by the physical uplink control channel, i is the frequency hopping variable of the subframe k, f hop (i) is the subband offset corresponding to the subframe k, f m (i) The mirror value corresponding to the subframe k.
A method for determining a frequency resource, where the method is used for a user equipment or a base station that serves the user equipment, and the method includes:

Determining the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;

Determining, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands, where the frequency resource locations of all subframes in the subband m are the same, and the frequency resource location of the subband m is equal to the The frequency resource position of the sub-frame k in the sub-band m, the sub-band m is one of the N sub-bands, and the sub-frame k in the sub-band m is one of the sub-bands m.
The method of claim 8 wherein:

The frequency resource location of the subframe k in the subband m is determined by a frequency hopping variable of the subframe k in the subband m;

The frequency hopping variable of the subframe k in the subband m is determined by the following formula:

or

Where i is the frequency hopping variable of the subframe k in the subband m, n s is the slot number of one of the slots included in the subframe k of the subband m, and CURRENT_TX_NB is the current transmission of the uplink data The number of times; SFN k is the system frame number of the radio frame in which the subframe k in the subband m is located; Intra_bundle_size is the frequency hopping interval, and K is a fixed constant.
A method according to any one of claims 8 or 9, wherein

The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:

The frequency resource location of the subframe k is determined by the following formula:

among them,

Where n PRB is the frequency resource location of the subframe k, and N sb is the number of subbands used for physical uplink shared channel transmission.
For the number of physical resource blocks included in the subband, n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station,
For the number of physical resource blocks occupied by the physical uplink control channel, i is the frequency hopping variable of the subframe k, and f hop (i) is the subband offset corresponding to the subframe k, f m (i) The mirror value corresponding to the subframe k.
The method of claim 8 wherein:

When m is an odd number, the frequency resource position of the sub-band m is different from the frequency resource position of the sub-band m when m is an even number.
The method of claim 11 wherein:

When m is an odd number, the frequency resource position of the sub-band m is indicated by the base station

When m is an even number, the frequency resource position of the sub-band m is determined by the following formula:

among them,
The number of physical resource blocks occupied by the physical uplink control channel,
When m is an odd number, the sub-band m is a frequency resource location, and RB START is a location of a physical resource block indicated by the base station,
The number of physical resource blocks used for physical uplink shared channel transmission,
The frequency resource position at which the sub-band m is when m is an even number.
The method of claim 11 wherein:

When m is an even number, the frequency resource position of the sub-band m is indicated by the base station

When m is an odd number, the frequency resource position of the sub-band m is determined by the following formula:

among them,
The number of physical resource blocks occupied by the physical uplink control channel,
When m is an odd number, the sub-band m is a frequency resource location, and RB START is a location of a physical resource block indicated by the base station,
The number of physical resource blocks used for physical uplink shared channel transmission,
The frequency resource position of the sub-band m when m is an even number.
A device for determining a frequency resource, the device user equipment or a base station serving the user equipment, including:

a first determining unit, configured to determine a frequency hopping mode of the transmission time interval binding of the multiple subframes as an Inter-bundle hopping frequency hopping;

a second determining unit, configured to determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of the multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes the multiple subframes a frequency resource location, where a frequency resource location of each of the plurality of subframes is equal to a frequency resource location of the subframe k, and a frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, The frequency hopping variable of the sub-frame k is determined by the time domain position of the sub-frame k, and the sub-frame k is in the multiple sub-frames. One subframe.
The device of claim 14 wherein:

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, and n s is the slot number of one of the slots included in the subframe k.
The device of claim 14 wherein:

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data.
The apparatus according to claim 16, wherein the frequency hopping variable of the subframe k is determined by a time domain location of the subframe k and a current number of transmissions of the uplink data, including:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, n s is the slot number of one of the slots included in the subframe k, and CURRENT_TX_NB is the current number of transmissions of the uplink data.
The device of claim 14 wherein:

The frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.
The method of claim 18, wherein

The frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval, including:

The frequency hopping variable of the subframe k is determined by the following formula:

Where i is the frequency hopping variable of the subframe k, SFN k is the system frame number of the radio frame in which the subframe k is located, and n s is the slot number of one of the slots included in the subframe k, TTI_BUNDLING_SIZE is the size of the transmission time interval binding, and K is a fixed constant.
A device according to any of claims 14-19, wherein

The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:

The frequency resource location of the subframe k is determined by the following formula:

among them,

Where n PRB is the frequency resource location of the subframe k, and N sb is the number of subbands used for physical uplink shared channel transmission.
For the number of physical resource blocks included in the subband, n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station,
For the number of physical resource blocks occupied by the physical uplink control channel, i is the frequency hopping variable of the subframe k, and f hop (i) is the subband offset corresponding to the subframe k, f m (i) The mirror value corresponding to the subframe k.
A frequency resource determining apparatus, where the apparatus is a user equipment or a base station serving the user equipment, and the method includes:

a first determining unit, determining that the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;

a second determining unit, configured to determine, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands, where frequency information locations of all subframes in the subband m are the same, The frequency resource location of the subband m is equal to the frequency resource location of the subframe k in the subband m, the subband m is one of the N subbands, and the subband k of the subband Is one of the sub-bands m.
The device of claim 21, wherein

The frequency resource location of the subframe k in the subband m is determined by a frequency hopping variable of the subframe k in the subband m;

The frequency hopping variable of the subframe k in the subband m is determined by the following formula:

or

Where i is the frequency hopping variable of the subframe k in the subband m, n s is the slot number of one of the slots included in the subframe k of the subband m, and CURRENT_TX_NB is the current transmission of the uplink data The number of times; SFN k is the system frame number of the radio frame in which the subframe k in the subband m is located; Intra_bundle_size is the frequency hopping interval, and K is a fixed constant.
A device according to any one of claims 21 or 22, wherein

The frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:

The frequency resource location of the subframe k is determined by the following formula:

among them,

Where n PRB is the frequency resource location of the subframe k, and N sb is the number of subbands used for physical uplink shared channel transmission.
For the number of physical resource blocks included in the subband, n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station,
For the number of physical resource blocks occupied by the physical uplink control channel, i is the frequency hopping variable of the subframe k, f hop (i) is the subband offset corresponding to the subframe k, f m (i) The mirror value corresponding to the subframe k.
The device of claim 21, wherein

When m is an odd number, the frequency resource position of the sub-band m is different from the frequency resource position of the sub-band m when m is an even number.
The method of claim 24 wherein

When m is an odd number, the frequency resource position of the sub-band m is indicated by the base station

When m is an even number, the frequency resource position of the sub-band m is determined by the following formula:

among them,
The number of physical resource blocks occupied by the physical uplink control channel,
When m is an odd number, the sub-band m is a frequency resource location, and RB START is a location of a physical resource block indicated by the base station,
The number of physical resource blocks used for physical uplink shared channel transmission,
The frequency resource position at which the sub-band m is when m is an even number.
The device of claim 24, wherein

When m is an even number, the frequency resource position of the sub-band m is indicated by the base station

When m is an odd number, the frequency resource position of the sub-band m is determined by the following formula:

among them,
The number of physical resource blocks occupied by the physical uplink control channel,
When m is an odd number, the sub-band m is a frequency resource location, and RB START is a location of a physical resource block indicated by the base station,
The number of physical resource blocks used for physical uplink shared channel transmission,
The frequency resource position of the sub-band m when m is an even number.