WO2017031643A1

WO2017031643A1 - Resource allocation, resource type instruction and recognition, and data receiving methods and apparatuses

Info

Publication number: WO2017031643A1
Application number: PCT/CN2015/087852
Authority: WO
Inventors: 冯淑兰; 刘劲楠; 李强; 吴毅凌
Original assignee: 华为技术有限公司
Priority date: 2015-08-21
Filing date: 2015-08-21
Publication date: 2017-03-02
Also published as: CN107113796A

Abstract

Disclosed are resource allocation, resource type instruction and recognition, and data receiving methods and apparatuses, so as to implement flexible time-frequency resource allocation, and improve the utility of time-frequency resources. The resource allocation method comprises: determining, according to a quantity of data packets that need to be sent to user equipment during a scheduling cycle, a resource bearing the data packets from schedulable time-frequency resources of the scheduling cycle, the user equipment having a coverage class, and the resource being corresponding to the coverage class; and determining, according to the coverage class corresponding to the resource, a pilot sequence that is born by each resource unit (RU) forming the resource.

Description

Resource allocation, indication and identification resource type, method and device for receiving data

Technical field

The present invention relates to the field of information processing technologies, and in particular, to a resource allocation, indication and identification resource type, and method and device for receiving data.

Background technique

With the development of wireless communication technology, the IoT service of massive and small data packets has gradually become the main business of wireless communication. In the Internet of Things communication system, the user equipment is divided into different coverage levels (English: Coverage Class; abbreviated as CC), and the modulation and coding modes of the data packets transmitted between the user equipments with different coverage levels and the base station are different, and the data is carried. The resources of the package are also different.

In the prior art, the IoT communication system strictly divides the time-frequency resources into multiple parts, and each part of the resources corresponds to one coverage level of the IoT terminal, and cannot allocate time-frequency resources flexibly, and causes time-frequency in some application scenarios. Resources are wasted, for example:

An application scenario is as follows: As shown in FIG. 2, the Internet of Things communication system allocates a certain size of time-frequency resources for coverage level 4 (CC4). However, the scheduling of the user equipment in the cell is random. In some subframes, it is not necessary to send a data packet to the user equipment of the CC4, and the resource corresponding to the CC4 can only be vacant. At the same time, it may be necessary to send data packets to user equipment of many other coverage levels (eg, coverage level 1, coverage level 2, or coverage level 3). Obviously, resources corresponding to other coverage levels are not sufficient. As a result, many time-frequency resources of the Internet of Things communication system are wasted.

Another application scenario is as follows: Assume that the user equipment is divided into four coverage levels. In the prior art, the Internet of Things communication system fixedly divides the time-frequency resources into four parts, and each part of the resources corresponds to one coverage level. In practical applications, the coverage sizes of different cells in the IoT communication system are very different, and the transmission conditions of the user equipment are also greatly different. If the time-frequency resource is fixedly divided into four parts, the flexibility is insufficient. For example, the coverage of some cells can reach 1000 meters, while the coverage of other cells is only tens of meters, and the transmission conditions of user equipments in the cell are very good. At this time, all user equipments in the cell are coverage level 1. Or 2, there is no user equipment covering levels 3 and 4. If the time-frequency resource is still divided into four parts, obviously, it corresponds to the coverage levels 3 and 4 respectively. Resources are unnecessary, causing waste of time-frequency resources.

In summary, in the prior art, the Internet of Things communication system is inflexible in the division of time-frequency resources.

Summary of the invention

The embodiments of the present invention provide a resource allocation, an indication and a resource type, and a method and a device for receiving data, which implement flexible allocation of time-frequency resources and improve utilization of time-frequency resources.

A first aspect of the embodiments of the present invention provides a method for resource allocation, including:

Determining, by the schedulable time-frequency resource of the scheduling period, a resource that carries the data packet, where the user equipment has an coverage level, the resource and the location, according to the number of data packets that need to be sent to the user equipment in the scheduling period. The coverage level corresponds to;

Determining, according to the coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource;

The schedulable time-frequency resource of the scheduling period is composed of at least one RU, and the RU is composed of at least one resource element RE, where the RU includes one time slot in the time domain, and includes at least one in the frequency domain. Activating a time-frequency resource of a subcarrier, the time slot being composed of at least one symbol, the RU comprising an RE for carrying the pilot sequence and an RE for carrying the data packet, the RE being in a time domain A symbol is included above, and a time-frequency resource of an activated subcarrier is included in the frequency domain.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the schedulable time-frequency resource of the scheduling period includes:

Of all time-frequency resources of the scheduling period, except for the first resource and the second resource; or

Among all the time-frequency resources of the scheduling period, the remaining resources except the second resource;

The first resource is used to carry a physical broadcast channel PBCH, and the second resource is used to carry a physical synchronization channel PSCH.

With reference to the first aspect, or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by using the schedulable time-frequency resource of the scheduling period, The resources of the data packet, including:

Determining a resource carrying the PDCCH from the schedulable time-frequency resources of the scheduling period;

The remaining resources except the resources carrying the PDCCH in the schedulable time-frequency resources of the scheduling period are determined as resources for carrying the PDSCH.

In combination with the first aspect, the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the The number of data packets that need to be sent to the user equipment in the scheduling period, and the resources that carry the data packet are determined from the schedulable time-frequency resources of the scheduling period, including:

Determining, according to the number of data packets corresponding to the coverage level, a number of code block resource units CBRUs corresponding to the coverage level, where the CBRUs include at least one time slot in the time domain, and include at least one activation in the frequency domain. Time-frequency resources of subcarriers, different CBRUs corresponding to different coverage levels;

And determining, according to the number of the CBRUs corresponding to the coverage level and the CBRUs corresponding to the coverage levels, the resources that carry the data packets from the schedulable time-frequency resources of the scheduling period, where the resources are at least one The coverage level corresponds to the CBRU composition.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation manner of the foregoing aspect, the resource is composed of at least one CBRU corresponding to the coverage level, including:

The number of time slots included in the time domain of the CBRU corresponding to the coverage level is at least one; or

The number of the activated subcarriers included in the frequency domain of the CBRU corresponding to the coverage level is at least the same as the number of the activated subcarriers included in the frequency domain of the first resource.

With reference to the first aspect, the first possible implementation of the first aspect, to any one of the fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the carrying The resource of the data packet is composed of at least one RU.

In conjunction with the fourth possible implementation of the first aspect, or the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the CBRU corresponding to the coverage level is in the frequency domain. The number of activated subcarriers included is determined according to the number of activated subcarriers included in the frequency domain by the RU.

Combining the fourth possible implementation of the first aspect with the sixth possible implementation of the first aspect In a seventh possible implementation manner of the foregoing aspect, the location of the CBRU corresponding to the coverage level in the schedulable time-frequency resource of the scheduling period, and the device of the user equipment The identifier has a corresponding relationship.

With reference to the first aspect, the first possible implementation of the first aspect, to any one of the seventh possible implementation manners of the first aspect, in the eighth possible implementation manner of the first aspect, Determining the resource carrying the data packet in the schedulable time-frequency resource of the scheduling period, including:

And determining, according to the order of the coverage level from high to low, the resource carrying the data packet from the schedulable time-frequency resources of the scheduling period, where the resource corresponding to the lowest coverage level is located in the schedulable time of the scheduling period The starting position of the frequency resource.

With reference to the first aspect, the first possible implementation of the first aspect to any one of the eighth possible implementations of the first aspect, in the ninth possible implementation of the first aspect, the one The slot includes 17 orthogonal frequency division multiplexed OFDM symbols.

With reference to the first aspect, the first possible implementation of the first aspect, to any one of the ninth possible implementation manners of the first aspect, in the tenth possible implementation manner of the first aspect, the data The package includes:

Data other than PBCH and PSCH, or data other than PSCH.

With reference to the first aspect, the first possible implementation of the first aspect, to any one of the tenth possible implementation manners of the first aspect, The data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.

A second aspect of the embodiments of the present invention provides a method for indicating a resource type, including:

Determining, by the resource unit, a pilot sequence that is carried by the resource unit, the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, the schedulable period a type of a time-frequency resource, including a third resource and a fourth resource, where the third resource is used to carry a physical downlink control channel PDCCH, and the fourth resource is used to carry a physical downlink shared channel PDSCH;

Sending the pilot sequence to the user equipment.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the RU is a time-frequency resource that includes one time slot in the time domain, and includes at least one active sub-carrier in the frequency domain, The slot includes at least one symbol, and the RU includes at least one resource element RE.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the 15 REs form a group of time-frequency resource groups for carrying pilot sequences;

One of the pilot sequences is carried in the RU, and the one pilot sequence is carried by the set of time-frequency resource groups for carrying pilot sequences or by at least one group for carrying pilot sequences. The frequency resource group bears jointly; or

At least one of the pilot sequences is carried in the RU, and each pilot sequence in the at least one pilot sequence is carried by a group of time-frequency resource groups for carrying pilot sequences or by at least one group Cooperating with a time-frequency resource group carrying a pilot sequence; or

The pilot sequence is jointly carried by at least one time-frequency resource group for carrying a pilot sequence in the RU, and each RU of the at least one RU includes at least one group of time-frequency resources for carrying a pilot sequence. group.

With reference to the second aspect, the first possible implementation of the second aspect to the second possible implementation of the second aspect, in a third possible implementation of the second aspect, the pilot sequence indicator The types of time-frequency resources that can be scheduled, including:

The pilot sequence indicates a type of the schedulable periodic time-frequency resource; or

a combination of at least two of the pilot sequences indicating a type of the schedulable periodic time-frequency resource; or

The pilot sequence indicates a size of the schedulable periodic time-frequency resource, and different types of schedulable time-frequency resources have different sizes.

With reference to the second aspect, the first possible implementation of the second aspect to the third possible implementation of the second aspect, in a fourth possible implementation of the second aspect, the pilot sequence is a length a sequence that is an integer multiple of 15;

The sequence whose length is an integer multiple of 15 is generated by a ZC sequence, or

The sequence whose length is an integer multiple of 15 is generated by the m sequence, or

The sequence whose length is an integer multiple of 15 is generated by the Gold sequence.

A third aspect of the embodiments of the present invention provides a method for identifying a resource type, including:

User equipment UE determines a coverage level of the UE;

Obtaining, by the UE, a pilot sequence of a schedulable resource bearer of a scheduling period according to the at least one pilot sequence stored by the UE;

Determining, by the UE, the resource corresponding to the coverage level according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the UE obtains, according to the pilot sequence stored by the UE, a pilot sequence of a schedulable resource bearer in a scheduling period, including:

The UE determines, in the at least one pilot sequence that is stored by the UE, a sequence that has the highest correlation with the pilot sequence of the RU that is included in the schedulable resource of the scheduling period, and determines that the scheduling period is a schedulable resource bearer. Pilot sequence.

A fourth aspect of the embodiments of the present invention provides a method for receiving a data packet, including:

User equipment UE determines a coverage level of the UE;

Determining, by the UE, resources corresponding to the coverage level according to the coverage level of the UE;

The UE receives a data packet of the UE on a predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, where the location of the predetermined CBRU corresponds to the device identifier of the UE.

A fifth aspect of the embodiments of the present invention provides a device for resource allocation, including:

a resource allocation unit, configured to determine, according to the number of data packets that need to be sent to the user equipment in the scheduling period, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, where the user equipment has a coverage level The resource corresponds to the coverage level;

a pilot sequence determining unit, configured to determine, according to a coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource;

The schedulable time-frequency resource of the scheduling period is composed of at least one RU, and the RU is composed of at least one resource element RE, where the RU includes one time slot in the time domain, and includes at least one in the frequency domain. Activating a time-frequency resource of a subcarrier, the time slot being composed of at least one symbol, The RU includes an RE for carrying the pilot sequence and an RE for carrying the data packet, the RE being a time-frequency resource including one symbol in the time domain and one active subcarrier in the frequency domain.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the schedulable time-frequency resource of the scheduling period includes:

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the resource allocation unit is configured to:

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, and the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the resource The allocation unit includes:

Determining a sub-unit, configured to determine, according to the number of data packets corresponding to the coverage level, a number of code block resource units CBRUs corresponding to the coverage level, where the CBRUs include at least one time slot in the time domain, and are in frequency The time domain resource of the at least one active subcarrier is included in the domain, and the CBRUs corresponding to different coverage levels are different;

a resource allocation sub-unit, configured to determine, according to the number of CBRUs corresponding to the coverage level and a CBRU corresponding to the coverage level, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, The resource consists of at least one CBRU corresponding to the coverage level.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the resource is composed of at least one CBRU corresponding to the coverage level, including:

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, and the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the carrying The resource of the data packet is composed of at least one RU.

With reference to the fourth possible implementation manner of the fifth aspect, or the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the CBRU corresponding to the coverage level is in the frequency domain The number of activated subcarriers included is determined according to the number of activated subcarriers included in the frequency domain by the RU.

With reference to any one of the fourth possible implementation of the fifth aspect to the sixth possible implementation of the fifth aspect, in a seventh possible implementation manner of the fifth aspect,

The location of the CBRU corresponding to the coverage level in the schedulable time-frequency resource of the scheduling period has a corresponding relationship with the device identifier of the user equipment.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, to any one of the seventh possible implementation manners of the fifth aspect, in the eighth possible implementation manner of the fifth aspect, The allocation unit is used to:

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, the eighth possible implementation manner of the fifth aspect, in the ninth possible implementation manner of the fifth aspect, the one The slot includes 17 orthogonal frequency division multiplexed OFDM symbols.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, the ninth possible implementation manner of the fifth aspect, in the tenth possible implementation manner of the fifth aspect, the data The package includes:

Data other than PBCH and PSCH, or data other than PSCH.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, to any one of the tenth possible implementation manners of the fifth aspect, The data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.

A sixth aspect of the embodiments of the present invention provides a device for resource allocation, including:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: according to the number of data packets that need to be sent to the user equipment in a scheduling period, from the schedulable time-frequency resource of the scheduling period Determining a resource carrying the data packet, the user equipment has a coverage level, and the resource corresponds to the coverage level; and determining, according to the coverage level corresponding to the resource, each resource unit RU that constitutes the resource Pilot sequence

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the schedulable time-frequency resource of the scheduling period includes:

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the processor is used to:

Allocating the schedulable time-frequency resources of the scheduling period except the resources carrying the PDCCH The remaining resources are determined as resources for carrying the PDSCH.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, and the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the processing Used for:

With reference to the third possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the resource is composed of at least one CBRU corresponding to the coverage level, including:

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, and the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the carrying The resource of the data packet is composed of at least one RU.

With reference to the fourth possible implementation manner of the sixth aspect, or the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the CBRU corresponding to the coverage level is in the frequency domain. The number of activated subcarriers included is determined according to the number of activated subcarriers included in the frequency domain by the RU.

With reference to the fourth possible implementation manner of the sixth aspect, the sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, corresponding to the coverage level The location of the CBRU in the schedulable time-frequency resource of the scheduling period has a corresponding relationship with the device identifier of the user equipment.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, to any one of the seventh possible implementation manners of the sixth aspect, in the eighth possible implementation manner of the sixth aspect, the processing Used for:

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, the eighth possible implementation manner of the sixth aspect, in the ninth possible implementation manner of the sixth aspect, the one The slot includes 17 orthogonal frequency division multiplexed OFDM symbols.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, the ninth possible implementation manner of the sixth aspect, in the tenth possible implementation manner of the sixth aspect, the data The package includes:

Data other than PBCH and PSCH, or data other than PSCH.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, to any one of the tenth possible implementation manners of the sixth aspect, The data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.

A seventh aspect of the embodiments of the present invention provides an apparatus for indicating a resource type, including:

a determining unit, configured to determine a pilot sequence that is carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, The schedulable periodic time-frequency resource type includes a third resource and a fourth resource, where the third resource is used to carry a physical downlink control channel PDCCH, and the fourth resource is used to carry a physical downlink shared channel PDSCH;

And a sending unit, configured to send the pilot sequence to the user equipment.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect,

The RU is a time-frequency resource including one time slot in the time domain and at least one active sub-carrier in the frequency domain, the time slot includes at least one symbol, and the RU includes at least one resource element RE.

With reference to the first possible implementation manner of the seventh aspect, in a second possible implementation manner of the seventh aspect, the 15 REs form a group of time-frequency resource groups for carrying a pilot sequence;

With reference to the seventh aspect, the first possible implementation manner of the seventh aspect, the second possible implementation manner of the seventh aspect, in a third possible implementation manner of the seventh aspect, the pilot sequence indicator The types of time-frequency resources that can be scheduled, including:

With reference to the seventh aspect, the first possible implementation manner of the seventh aspect, the third possible implementation manner of the seventh aspect, in the fourth possible implementation manner of the seventh aspect, the pilot sequence is a length a sequence that is an integer multiple of 15;

An eighth aspect of the embodiments of the present invention provides an apparatus for indicating a resource type, including:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: determining a pilot sequence carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs The pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, the type of the schedulable periodic time-frequency resource includes a third resource and a fourth resource, and the third resource is used to carry the physical downlink control channel. a PDCCH, where the fourth resource is used to carry a physical downlink shared channel PDSCH;

And a transmitter, connected to the processor by the bus, to perform: sending the pilot sequence to the user equipment.

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect, the RU is a time-frequency resource that includes one time slot in the time domain, and includes at least one active sub-carrier in the frequency domain, The slot includes at least one symbol, and the RU includes at least one resource element RE.

With reference to the first possible implementation manner of the eighth aspect, in a second possible implementation manner of the eighth aspect, the 15 REs form a group of time-frequency resource groups for carrying the pilot sequence;

With reference to the eighth aspect, the first possible implementation manner of the eighth aspect, the second possible implementation manner of the eighth aspect, in a third possible implementation manner of the eighth aspect, the pilot sequence indicator The types of time-frequency resources that can be scheduled, including:

With reference to the eighth aspect, the first possible implementation manner of the eighth aspect, the third possible implementation manner of the eighth aspect, in the fourth possible implementation manner of the eighth aspect, the pilot sequence is a length a sequence that is an integer multiple of 15;

The ninth aspect of the embodiments of the present invention provides an apparatus for identifying a resource type, including:

a coverage level determining unit, configured to determine a coverage level of the user equipment UE;

And an obtaining unit, configured to obtain, according to the at least one pilot sequence stored by the UE, a pilot sequence of a schedulable resource bearer of a scheduling period;

And a resource determining unit, configured to determine, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.

In conjunction with the ninth aspect, in a first possible implementation of the ninth aspect, the obtaining unit is configured to:

And determining, in the at least one pilot sequence that is stored by the UE, a sequence that has the highest correlation with a pilot sequence of the RU bearer included in the schedulable resource of the scheduling period, and is determined as a pilot that is scheduled by the scheduling period schedulable resource sequence.

A tenth aspect of the embodiments of the present invention provides an apparatus for identifying a resource type, including:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: determining a coverage level of the UE; obtaining, according to the at least one pilot sequence stored by the UE, a schedulable resource bearer of a scheduling period a pilot sequence; determining, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.

In conjunction with the tenth aspect, in a first possible implementation of the tenth aspect, the processor is configured to:

An eleventh embodiment of the present invention provides an apparatus for receiving a data packet, including:

a resource determining unit, configured to determine, according to the coverage level of the UE, a resource corresponding to the coverage level;

And a data packet receiving unit, configured to receive, according to a predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, a data packet of the UE, where a location of the predetermined CBRU corresponds to a device identifier of the UE.

A twelfth aspect of the embodiments of the present invention provides an apparatus for receiving a data packet, including:

a memory for storing program code;

a processor coupled to the memory via a bus for reading the program code to perform:

Determining a coverage level of the user equipment UE; determining, according to the coverage level of the UE, a resource corresponding to the coverage level;

a receiver coupled to the processor via the bus to perform:

And receiving, by the predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, a data packet of the UE, where a location of the predetermined CBRU corresponds to a device identifier of the UE.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

In the embodiment of the present invention, according to the coverage level of the user equipment that needs to be scheduled in the scheduling period, the time-frequency resources of the scheduling period are allocated, and the time-frequency resources are not fixedly divided into several parts, thereby reducing resource waste and realizing The flexible allocation of time-frequency resources improves the utilization of time-frequency resources. The resource allocation method provided by the embodiment of the present invention is based on a time-frequency resource of a scheduling period, that is, each resource allocation is performed for a time-frequency resource of a scheduling period. For example: the scheduling period is The duration of two subframes, that is, 320ms. The user equipment can know the resource allocation in a timely manner, and the base station can notify the user equipment of the resource allocation by using the broadcast message in the prior art. The broadcast message takes 1.28 s (that is, 1280 ms), which is an embodiment of the present invention. The resource allocation method provided is more dynamic than the prior art, and it is avoided that a user equipment of a certain coverage level cannot allocate resources for a long time and cannot communicate with the base station.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of 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 obtain other drawings based on these drawings without paying for inventive labor.

1 is a schematic diagram of allocating a time-frequency resource corresponding to one frame in the prior art;

2 is a schematic diagram of allocating a time-frequency resource corresponding to one frame in a case where a UE has four coverage levels in the prior art;

3 is a first schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

4 is a second schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 5 is a third schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 6 is a frequency reuse factor according to an embodiment of the present invention;

And adopting a schematic diagram of resource division manner under configuration 1 in Table 2;

FIG. 7 is a frequency reuse factor according to an embodiment of the present invention;

And another schematic diagram of the resource division manner under configuration 1 in Table 2 is adopted;

FIG. 8 is a frequency reuse factor according to an embodiment of the present invention;

And a schematic diagram of resource partitioning in configuration 2 in Table 2;

FIG. 9 is a schematic diagram of a resource division manner under the configuration 1 in Table 2 in the embodiment of the present invention;

FIG. 10 is another schematic diagram of a resource division manner under the configuration 1 in Table 2 in the embodiment of the present invention;

FIG. 11 is a schematic diagram of a resource division manner in which the frequency reuse factor is 1 and the configuration 2 in Table 2 is used in the embodiment of the present invention;

FIG. 12 is a schematic diagram of a base station transmitting a 2-fold repeated PDCCH code block according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of a base station transmitting a 4-fold repeated PDCCH code block according to an embodiment of the present invention;

14 is a fourth schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

15 is a fifth schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

16 is a sixth schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 17 is a seventh schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of an eighth type of time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 19 is a ninth schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

20 is a tenth schematic diagram of a time-frequency resource group for carrying a pilot sequence in an RU according to an embodiment of the present invention;

FIG. 21 is a flowchart of a resource allocation method according to an embodiment of the present invention;

FIG. 22 is a flowchart of a method for indicating a resource type by a BS according to an embodiment of the present invention;

FIG. 23 is a flowchart of a method for a UE to identify a type of a schedulable time-frequency resource in a scheduling period according to an embodiment of the present invention; FIG.

FIG. 24 is a flowchart of a method for receiving a data packet according to an embodiment of the present invention;

FIG. 25 is a schematic block diagram of an apparatus for resource allocation according to an embodiment of the present disclosure;

FIG. 26 is a schematic structural diagram of an apparatus for resource allocation according to an embodiment of the present invention;

FIG. 27 is a schematic block diagram of an apparatus for indicating a resource type according to an embodiment of the present invention;

FIG. 28 is a schematic structural diagram of an apparatus for indicating a resource type according to an embodiment of the present disclosure;

FIG. 29 is a schematic block diagram of an apparatus for identifying a resource type according to an embodiment of the present disclosure;

FIG. 30 is a schematic structural diagram of an apparatus for identifying a resource type according to an embodiment of the present disclosure;

FIG. 31 is a schematic block diagram of an apparatus for receiving a data packet according to an embodiment of the present invention;

FIG. 32 is a schematic structural diagram of an apparatus for receiving a data packet according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiments of the present invention are applicable to an Internet of Things communication system. The Internet of Things communication system includes: a base station and a plurality of user equipments. Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

The terms "system" and "network" in the embodiments of the present invention may be used interchangeably. "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, the character "/", unless otherwise specified, generally indicates that the contextual object is an "or" relationship.

BS (Chinese: Base Station; English: Base Station), which may be a BTS (Base Transceiver Station) in GSM (Global System of Mobile communication) or CDMA (Code Division Multiple Access). Can also be WCDMA NB (NodeB; base station) in the (Wideband Code Division Multiple Access), and may also be an eNB or an eNodeB (Evolutional Node B) in LTE (Long Term Evolution), or Base station equipment in the future 5G network, etc.

The UE (English: User Equipment) may be a wireless terminal or a wired terminal. The wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or Other processing devices connected to the wireless modem, or wireless sensors with wireless connectivity. The wireless terminal can communicate with one or more core networks via a radio access network (eg, Radio Access Network, RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone), wireless wearable Devices, wireless meter reading devices, wireless sensors, and computers with mobile terminals, for example, may be portable, pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network . For example, PCS (Personal Communication Service) telephone, cordless telephone, SIP (Session Initiation Protocol) telephone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant, personal digital assistant), Equipment such as wearable glasses (wearable glasses, wearable watches, wearable bracelets). A wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an AP, an access point, an access point. ), Remote Terminal, Access Terminal, User Terminal, User Agent, Terminal, or User Device.

Since one BS will serve multiple UEs in a cell, and the range of the cell may be large, the difference in path loss between different UEs to the BS in the cell is usually large. In order to balance the transmission conditions of different UEs, the UEs in the cell are divided into different CCs according to the path loss (Chinese: Coverage Level; English: Coverage Class). For example, the UE can be divided into four coverage levels, the UE with a small path loss is divided into coverage level 1; the slightly worse is divided into coverage level 2; and the worst is divided into coverage level 4. When the data packet is transmitted between the BS and the UE, different modulation and coding modes are adopted according to the coverage level of the UE. For UEs with large path loss, a lower modulation and coding scheme is adopted to ensure the reliability of transmission; and for road loss is small The UE adopts a higher modulation and coding mode to improve the transmission efficiency.

In the embodiment of the present invention, the coverage level is 4 as an example. If the number of coverage levels changes, it is also within the protection scope of the present invention.

Please refer to Table 1. Table 1 is a list of parameter information for four coverage levels. The number of times of repeated coding refers to the number of times that one PDCCH is repeatedly transmitted. Herein, PDCCH refers to data representing control information.

Table 1 List of parameter information for 4 coverage levels

The signals transmitted between the BS and the UE are classified into four categories: PSCH (Chinese: Physical Synchronization Channel; English: Physical Synchronization Channel); PBCH (Chinese: Physical Broadcast Channel; English: Physical Broadcast Channel); PDCCH (Chinese: Physical downlink control channel; English: Physical Downlink Control Channel); PDSCH (Chinese: Physical Downlink Control Channel; English: Physical Downlink Control Channel) In this paper, PSCH refers to data representing synchronization information, and PBCH refers to data representing broadcast information. PDSCH refers to data representing shared information.

Since four types of data need to be transmitted between the BS and the UE, resources need to be allocated for the four types of data. Please refer to FIG. 1. FIG. 1 is a schematic diagram of assigning a time-frequency resource corresponding to one frame in the prior art. As described in the background art, in the time domain, a frame is divided into 8 subframes. Each subframe includes 32 slots in time and 45 active subcarriers in the frequency domain. The time-frequency resource corresponding to the last slot of each subframe is allocated to the PSCH. Five consecutive time slots of every even subframe and 15 consecutive active subcarriers corresponding to the five consecutive time slots are allocated to the PBCH. All time slots except for the PSCH in each odd subframe, and the partial portions corresponding to all the time slots The live subcarrier is allocated to the PDCCH. The remaining time-frequency resources allocated to the PSCH and PBCH and the PDCCH in one frame are allocated to the PDSCH. In FIG. 1 , the partially activated subcarrier is taken as an example of 8 active subcarriers.

If a UE needs to receive the service of the BS, it first needs to synchronize with the BS, which is implemented by receiving the PSCH. Second, the UE needs to receive the PBCH, and the PBCH carries the system message. By receiving the system message, the UE can obtain the basic configuration information of the network, for example, the system bandwidth, the current frame number, and the like. Secondly, the UE needs to receive the PDCCH, and then obtain scheduling information, feedback information, and the like. Finally, the UE needs to receive the PDSCH to obtain downlink data.

For the UE, in order to receive the PDCCH, the UE first needs to know the location of the resource for carrying the PDCCH corresponding to the coverage level to which the UE belongs, and then find the PDCCH that the BS sends to itself.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of a time-frequency resource allocated for one frame in the case where the UE has four coverage levels in the prior art. In the prior art, the base station and the UE stipulate a plurality of time-frequency resource allocation modes, and the base station notifies the UE through a broadcast message, which type of time-frequency resource allocation mode is adopted, and the UE obtains four coverage levels and each according to a predefined division rule. Information about where the time-frequency resources corresponding to the coverage levels are located.

In the mode of the time-frequency resource allocation in the prior art, the resources for carrying the PDCCH corresponding to different coverage levels are fixed for a period of time. In this way, each UE knows in advance the location of the resource for carrying the PDCCH corresponding to each coverage level, so the UE can find the location of the resource for carrying the PDCCH that is the same as the coverage level of the UE, and then check the PDCCH at the location. .

However, as described in the background, the manner in which prior art time-frequency resources are allocated is not flexible. The embodiments of the present invention provide a new resource allocation method for the defects of the resource allocation method in the prior art.

The embodiment of the present invention first proposes an RU (Chinese: Resource Unit; English: Resource Unit). An RU is a time-frequency resource that includes one slot in the time domain and at least one active subcarrier in the frequency domain. Optionally, one RU includes one subband in the frequency domain, and one subband consists of 15 consecutive Activate the subcarrier composition. For 45 active subcarriers, it can be divided into 3 subbands.

In the embodiment of the present invention, one time slot is composed of at least one symbol. Optionally, one time slot includes 17 OFDM (Chinese: Orthogonal Frequency Division Multiplexing) symbols, so the embodiment of the present invention also proposes RE (Chinese: Resource Element; English: Resource Rlement) Used to identify time-frequency resources. An RE is a time-frequency resource that includes one symbol in the time domain and an active subcarrier in the frequency domain. An RU consists of at least one RE. If one RU includes 15 consecutive active subcarriers in the frequency domain, one RU includes a total of 255 REs, where 255 is equal to 17 times 15.

In the embodiment of the present invention, an RU includes an RE for carrying the pilot sequence and an RE for carrying a data packet. Herein, the data packet includes data other than PBCH and PSCH, or data other than PSCH. That is to say, the data in the data packet is data other than PBCH and PSCH. Optionally, the data in the data packet is a PDCCH and/or a PDSCH. That is, the data packet is: a data packet carrying a PDCCH; and/or a data packet carrying a PDSCH. In this paper, a data packet is formed by encoding, encapsulating, etc. the data. Therefore, the schedulable time-frequency resource of the scheduling period is used to carry a PDCCH and/or a PDSCH.

The pilot sequence may also be referred to as RS (Chinese: reference signal; English: Reference Signal or Pilot). For example, 30 REs of one RU are used to carry pilot sequences, and the remaining 225 REs are used to carry data packets; or 45 REs of one RU are used to carry pilot sequences, and the remaining 210 REs are used to carry data packets.

The resource allocation method provided by the embodiment of the present invention is based on a time-frequency resource of a scheduling period, that is, each resource allocation is performed for a time-frequency resource of a scheduling period. For example, the scheduling period is the duration of two subframes, that is, 320 ms. The user equipment can know the resource allocation in a timely manner, and the base station can notify the user equipment of the resource allocation by using the broadcast message in the prior art. The broadcast message takes 1.28 s (that is, 1280 ms), which is an embodiment of the present invention. The resource allocation method provided is more dynamic than the prior art, and it is avoided that a user equipment of a certain coverage level cannot allocate resources for a long time and cannot communicate with the base station.

Referring to FIG. 21, a resource allocation method provided by an embodiment of the present invention includes the following steps:

Step 101: Determine, according to the number of data packets that need to be sent to the user equipment in the scheduling period, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, where the user equipment has an coverage level, The resource corresponds to the coverage level.

Step 102: Determine, according to the coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource.

The schedulable time-frequency resource of the scheduling period is composed of at least one RU. Optionally, the schedulable time-frequency resource of the scheduling period includes:

Specifically, if all the resources of the PSCH are unschedulable, the schedulable time-frequency resources of the scheduling period are: all the time-frequency resources of the scheduling period, except for the resources carrying the PSCH. Remaining resources. If the resources carrying the PBCH and the resources carrying the PSCH are unschedulable in all the time-frequency resources of the scheduling period, the schedulable time-frequency resources of the scheduling period refer to all the time-frequency resources of the scheduling period, except for the resources carrying the PBCH. And the remaining resources outside the resources carrying the PSCH. All time-frequency resources of the scheduling period are all available frequencies of the scheduling node in the frequency domain, for example, all available active sub-carriers, and one scheduling period in time. For the embodiment of the present invention, if the frequency reuse factor is 1, the frequency domain includes 45 active subcarriers; if the frequency reuse factor is

Then, 15 active subcarriers are included in the frequency domain. A scheduling period is 2 subframes, a total of 320ms.

The following steps are performed before the step 101 is performed, because the resources carrying the PSCH are excluded, or the resources carrying the PBCH and the resources carrying the PSCH are excluded:

Determining the schedulable time-frequency resource of the scheduling period.

Specifically, if the resource carrying the PSCH in the scheduling period is unschedulable, then The resources carrying the PSCH are determined in all the time-frequency resources of the scheduling period, and the remaining resources of the time-frequency resources of the scheduling period except the resources carrying the PSCH are used as the schedulable resources of the scheduling period.

If the resource carrying the PSCH and the resource carrying the PBCH are unschedulable, the resource carrying the PSCH and the resource carrying the PBCH are determined from all the time-frequency resources of the scheduling period, and then the scheduling period is All the time-frequency resources except the resources carrying the PSCH and the resources carrying the PBCH are used as the schedulable resources of the scheduling period.

The resource carrying the PBCH and the resource carrying the PSCH are preset. A preset rule is: similar to the prior art, assigning the last slot of each subframe and the 45 consecutive activated subcarriers corresponding to the last slot to the PSCH. The consecutive 5 slots of each even subframe and the 15 consecutive activated subcarriers corresponding to the consecutive 5 slots are allocated to the PBCH. The specific 5 time slots are allocated to the PBCH, and may be determined according to the cell identity of the cell where the user equipment UE scheduled in the scheduling period is located.

In the embodiment of the present invention, the resource carrying the PDCCH is corresponding to the coverage level. If the resource used to carry the PDSCH needs to be corresponding to the coverage level, the description of the resource corresponding to the coverage of the PDCCH and the coverage level may be referred to. The following is an example in which the resource carrying the PDCCH is corresponding to the coverage level, and the resource for carrying the PDSCH does not need to correspond to the coverage level.

According to the PDCCH and the PDSCH, each of the multiple RUs of the schedulable time-frequency resource that constitutes the scheduling period has the following first implementation manner and the second implementation manner:

The first implementation manner: each of the plurality of RUs of the schedulable time-frequency resource that constitutes the scheduling period includes only one of a resource for carrying the PDSCH and a resource for carrying the PDCCH corresponding to one coverage level. In the first implementation manner, first, the resources for carrying the PDCCH corresponding to the coverage level, which are composed of at least one RU, are determined from the plurality of RUs of the schedulable time-frequency resources that constitute the scheduling period, and then the remaining RUs are used. As a resource for carrying a PDSCH, the coverage level refers to an coverage level that the user equipment that needs to be scheduled in the scheduling period has.

The second implementation manner is as follows: each of the multiple RUs of the schedulable time-frequency resource that constitutes the scheduling period includes both the resource for carrying the PDSCH and the one for the coverage level. The resource of the PDCCH. Among the multiple RUs of the schedulable time-frequency resources that make up the scheduling period, a part of the 15 consecutive activated sub-carriers of each RU activates the sub-carrier as the resource corresponding to one coverage level for carrying the PDCCH, and the remaining activated sub-carriers As a resource for carrying the PDSCH.

Or each of the RUs includes resources for carrying the PDCCH corresponding to multiple different coverage levels. Among the multiple RUs of the schedulable time-frequency resources that make up the scheduling period, a part of the 15 consecutive activated sub-carriers of each RU activates the sub-carrier as the resource corresponding to one coverage level for carrying the PDCCH, and the remaining activated sub-carriers As a resource for carrying a PDCCH corresponding to another coverage level.

Or each of the RUs includes a resource for carrying a PDSCH and a resource for carrying a PDCCH corresponding to multiple different coverage levels. Among the multiple RUs of the schedulable time-frequency resources that make up the scheduling period, a part of the 15 consecutive activated sub-carriers of each RU activates the sub-carriers as resources corresponding to one coverage level for carrying the PDCCH, and a part of the activated sub-carriers A resource for carrying a PDCCH corresponding to another coverage level, and the remaining activated subcarriers serve as resources for carrying the PDSCH.

As to which subcarriers in the RU are used as the resources for carrying the PDSCH, which subcarriers are used as the resources for carrying the PDCCH corresponding to which coverage level, may be preset or semi-statically set, that is, which of the RUs is set by the base station The subcarriers serve as resources for carrying the PDSCH, which subcarriers serve as resources for carrying the PDCCH corresponding to which coverage level, and notify the UE by a broadcast message.

For the second implementation, each RU will specify a high priority, for example, specifying that the PDCCH is a high priority. As to which of the PDCCH and the PDSCH is a high priority, it may be pre-agreed or semi-statically set, that is, the base station sets which of the RUs is a high priority and notifies the UE scheduled in the scheduling period by a broadcast message.

For the second implementation, which sub-carriers in the RU are used as the resources for carrying the PDCCH corresponding to the coverage level, and which sub-carriers are used as the resources for carrying the PDSCH, and the RUs are classified into different types. The UE scheduled in the scheduling period is notified by a broadcast message.

Of course, in practical applications, multiple RUs of the schedulable time-frequency resources that make up the scheduling period may A part of the RU is used in the first implementation manner, and the other part is used in the second embodiment.

In the first implementation manner described above, the RUs for carrying the PDCCH constitute a PDCCH region, and the RUs for carrying the PDSCH constitute a PDSCH region. The PDCCH region and the PDSCH region may be composed of one or more RUs that are physically consecutive, or may be composed of physically non-contiguous RUs. If it is the latter, the virtual continuous RU is defined, and the virtual RU and the physical RU are mapped according to a predefined rule. At this time, the PDCCH area and the PDSCH area are consecutively one or more from the perspective of the virtual RU. The composition of the RU.

A predefined rule between a virtual RU and a physical RU is:

N_sv(i) represents a virtual RU number, N_sp(i) represents a physical RU number, and M represents a time slot allocated to the PSCH and the PBCH in one subframe. If the last time slot of each subframe is allocated to the PSCH in the time domain, and the consecutive 5 time slots of each even subframe are allocated to the PBCH, for even subframes, M=26, and for odd subframes, M=31. This formula indicates that each 4 RUs constitute a continuous group.

The PDCCH region may be classified into one or more types of different regions according to the number of coverage levels of the UEs scheduled by the scheduling period, for example, a PDCCH region with a coverage level of 1, a PDCCH region with a coverage level of 2, and the like. At this time, each of the plurality of RUs of the schedulable time-frequency resource that constitutes the scheduling period belongs to only one PDCCH region of the coverage level, or only belongs to the PDSCH region.

Whether each of the plurality of RUs that are schedulable time-frequency resources according to the scheduling period includes the resources for carrying the PDCCH and the resources for carrying the PDSCH are similar, according to whether each RU in the PDCCH region includes and different coverage levels. The PDCCH region has a third implementation manner and a fourth implementation manner, which are corresponding to the resources for carrying the PDCCH.

A third implementation manner: each RU in the PDCCH region includes only resources corresponding to one coverage level for carrying the PDCCH, that is, 15 initiators in the PDCCH region where no RU exists. The carrier part activates the subcarrier as a resource for carrying the PDCCH corresponding to one coverage level, and the remaining activated subcarrier serves as a resource for carrying the PDCCH corresponding to another coverage level. That is, the resource carrying the data packet is composed of at least one RU.

A fourth implementation manner: each RU in the PDCCH region includes resources for carrying a PDCCH corresponding to different coverage levels. The 15 activated subcarrier portions of each RU in the PDCCH region activate the subcarriers as resources for carrying the PDCCH corresponding to one coverage level, and the remaining activated subcarriers serve as resources for carrying the PDCCH corresponding to another coverage level. As to which sub-carriers in the RU are used as the bearer PDCCH resources, which may be preset or semi-statically set, that is, the base station sets which sub-carriers in the RU are used as bearers corresponding to which coverage level. The resources of the PDCCH are notified by the broadcast message to the UE scheduled in the scheduling period.

Similar to the second implementation manner described above, for the fourth implementation manner, each RU defines a high priority coverage level, for example, the coverage level 1 is a high priority. As to which coverage level is high priority, it may be pre-agreed or semi-statically set, that is, the base station sets which coverage level in the RU is high priority and notifies the UE scheduled in the scheduling period by a broadcast message. Or, for the fourth implementation manner, each RU is defined as one type, and the number of subcarriers for carrying the PDSCH included in each of the RUs, and the subcarriers for carrying the PDCCH corresponding to the various coverage levels. The number of carriers, which is notified by the base station to the UE scheduled in the scheduling period by a broadcast message.

Certainly, in an actual application, a part of the RUs in the PDCCH area may use the foregoing third implementation manner, and another part of the RU uses the foregoing fourth implementation manner, which is not limited in the embodiment of the present invention.

Each of the RUs of the schedulable time-frequency resources constituting the scheduling period includes only one of a resource for carrying a PDCCH and a resource for carrying a PDSCH, and each RU in the PDCCH region includes a corresponding one of the coverage levels. In the case of the resource carrying the PDCCH, how to perform step 101 is described in detail.

The embodiment of the present invention provides a CBRU (Chinese: Coded Block Resource Unit). The CBRU is a time-frequency resource including at least one time slot in the time domain and at least one active sub-carrier in the frequency domain. A CBRU is used to carry a packet. CBRU at the time The number of time slots included in the domain and the number of activated subcarriers included in the frequency domain may be predefined, and the CBRUs corresponding to different coverage levels are different.

Optionally, the number of activated subcarriers included in the frequency domain by the CBRU corresponding to the coverage level is determined according to the number of activated subcarriers included in the frequency domain by the RU. That is, the number of activated subcarriers included in the CBRU may be predefined according to the RU. If one RU includes 15 consecutive activated subcarriers, the number of activated subcarriers included in the CBRU may be defined as 3 or 5 or 15. Multiples. Of course, the number of activated subcarriers included in the CBRU may not be predefined according to the RU, but may be configured with reference to the prior art.

Please refer to Table 1 above. Table 1 shows an example in which the number of coverage levels is 4. The last row in Table 1 lists the CBRUs corresponding to each coverage level. As can be seen from Table 1, the CBRU corresponding to the coverage level 1 includes 4 activations. For the subcarrier, the CBRU corresponding to the coverage level 2 includes 4 active subcarriers, the CBRU corresponding to the coverage level 3 includes 4 active subcarriers, and the CBRU of the coverage level 4 includes 4 active subcarriers.

Please refer to Table 2. Table 2 lists two configurations of the number of active subcarriers included in the frequency domain of CBRUs corresponding to different coverage levels. The number of activated subcarriers included in the CBRU is determined according to the number of activated subcarriers included in the RU. The number of activated subcarriers included in the CBRU is 3 or a multiple of 5 or 15. In configuration 2, the number of activated subcarriers included in the CBRU is configured with reference to the prior art, and the total number of time-frequency REs corresponding to each coverage level of the prior art is equal.

Table 2 Two configurations of the number of activated subcarriers included in the CBRU of four coverage levels

As described above, the resources for carrying the PDCCH are first determined from the plurality of RUs of the schedulable time-frequency resources that make up the scheduling period, and then the remaining resources are used as resources for carrying the PDSCH. First, how to determine the resources used to carry the PDCCH will be described. Includes the following steps:

Specifically, the base station determines, according to the number of data packets carrying the PDCCH corresponding to the coverage level of the user equipment that needs to be scheduled in the scheduling period, the size of the resource used to carry the PDCCH in the scheduling period, and further The resource for carrying the PDCCH corresponding to each coverage level is determined, and the resource is allocated to the data packet carrying the PDCCH in the scheduling period, and the remaining resources that are not allocated in the scheduling period are the resources used to carry the PDSCH.

In the embodiment of the present invention, according to the order of the coverage level from high to low, from the scheduling period The resource carrying the data packet is determined in the schedulable time-frequency resource, and the resource corresponding to the lowest coverage level is located at a starting position of the schedulable time-frequency resource in the scheduling period.

A resource allocation manner is: the base station sequentially determines the size and number of corresponding CBRUs of each coverage level according to the order of the coverage level of the user equipment that needs to be scheduled in the scheduling period from high to low. The size of the CBRU corresponding to each coverage level refers to the number of slots included in the time domain of the CBRU corresponding to each coverage level and the number of activated subcarriers included in the frequency domain. The number of CBRUs corresponding to each coverage level refers to how many CBRUs corresponding to the coverage level can be divided according to the size of the CBRU corresponding to the coverage level.

Then, starting from the smallest time slot in the time-frequency resource of the scheduling period (that is, the starting position of the schedulable time-frequency resource located in the scheduling period) and the lowest frequency, the time domain is incremented by the time slot, and the frequency is activated from the lowest frequency. The subcarrier or the highest frequency activated subcarrier is counted, and the active subcarrier is incremented in the frequency domain. First, the active subcarrier of one slot is allocated, and after the active subcarrier of one slot is allocated, the next next one is allocated. The activated subcarriers of the slot are allocated until the number of CBRUs corresponding to the highest coverage level that the user equipment that needs to be scheduled in the scheduling period has been allocated. Then, the number of CBRUs corresponding to the next highest coverage level of the user equipment that needs to be scheduled in the scheduling period is allocated in the same manner. The number of CBRUs corresponding to all coverage levels that the user equipment that needs to be scheduled needs to be allocated after the scheduling period is allocated. After the resources for carrying the PDCCH are allocated, the remaining unallocated resources are resources for carrying the PDSCH.

In the embodiment of the present invention, the number of time slots included in the time domain of the CBRU corresponding to the coverage level is at least one; or

When the frequency reuse factor is not 1, the time slot is divided into time slots, and the time-frequency resources of the previous time slot are divided to divide the time-frequency resources of the next adjacent time slot.

Frequency reuse factor

For example, in this case, one cell occupies one sub-band, taking the second sub-band (sub-band 1) occupied by the cell as an example. The number of active sub-carriers included in the CBRU is as shown in Table 2, and the base station determines each coverage level. The number of corresponding CBRUs is shown in Table 3. A resource partitioning mode is shown in Figure 6.

Table 3 Number of CBRUs per coverage level

If the number of CBRUs included in the PDCCH region is large, the PDCCH region will cross the odd subframes to the even subframes. At this time, the allocation of the PDCCH region skips the RU for carrying the PSCH and the RU for carrying the PBCH.

Frequency reuse factor

For example, in this case, one cell occupies one sub-band, taking the second sub-band (sub-band 1) occupied by the cell as an example. The number of active sub-carriers included in the CBRU is as shown in Table 2, and the base station determines each coverage level. The number of corresponding CBRUs is shown in Table 4. A resource partitioning mode is shown in Figure 7.

Table 4 Number of CBRUs corresponding to 4 coverage levels

Frequency reuse factor

For example, in the same way, one cell occupies one sub-band, taking the second sub-band (sub-band 1) occupied by the cell as an example. The number of activated sub-carriers included in the CBRU is as shown in Table 2, and the base station determines each coverage level. The number of corresponding CBRUs is shown in Table 5. A resource partitioning mode is shown in Figure 8.

Table 5 Number of CBRUs corresponding to 4 coverage levels

The above frequency reuse factor is

In the case of a BS, it is usually divided into 3 sectors. Each sector uses a different active subcarrier, for example: sector 1 uses active subcarriers 0-14, sector 2 uses active subcarriers 15-29, and sector 3 uses active subcarriers 30-44. Such mutual interference between sectors will be greatly reduced. But the corresponding disadvantage is that the resources available to each sector will be reduced.

When the frequency reuse factor is 1, the time slot is divided into time slots, and the time-frequency resources having the same activated subcarrier number as the resources used to carry the PBCH are divided, and then the resources for carrying the PBCH are divided. Time-frequency resources with different subcarrier numbers.

Taking the frequency reuse factor as an example, one cell occupies three sub-bands at the same time. The number of active sub-carriers included in the CBRU is as shown in Table 2, and the number of CBRUs that each base station determines for each coverage level is shown in Table 6. , a resource partitioning method is shown in Figure 9.

Table 6 Number of CBRUs corresponding to 4 coverage levels

When the frequency reuse factor is 1, the PDCCH region is allocated in the following manner: the time-frequency domain resource of the sub-band in which the RU that carries the PBCH is preferentially allocated to the PDCCH, and the sub-band in which the RU for carrying the PBCH is located When the time-frequency domain resources are insufficient, the time-frequency resources of other sub-bands are allocated to the PDCCH. Advantages: Interference coordination between cells can be done.

Taking the frequency reuse factor as an example, one cell simultaneously occupies three sub-bands, and the CBRU includes activation. The number of subcarriers is the configuration 1 in Table 2. The base station determines the number of CBRUs corresponding to each coverage level as shown in Table 7. A resource partitioning manner that can perform interference coordination between cells is shown in FIG.

Table 7 Number of CBRUs with 4 coverage levels

Taking the frequency reuse factor as an example, one cell occupies three sub-bands at the same time. The number of active sub-carriers included in the CBRU is as shown in Table 2 in Table 2. The number of CBRUs that each base station determines for each coverage level is shown in Table 8. , a resource partitioning method is shown in Figure 11.

Table 8 Number of CBRUs with 4 coverage levels

Since FIG. 6, FIG. 7, FIG. 9, and FIG. 10 are obtained on the premise that the number of activated subcarriers included in the CBRU is the configuration 1 in Table 2, one RU can be equally divided by multiple CBRUs, and there is no PDCCH region. The case where each RU corresponds to a different coverage level. As can be seen from FIG. 6, FIG. 7, FIG. 9, and FIG. 10, each RU in the PDCCH region corresponds to one coverage level.

Since FIG. 8 and FIG. 11 are obtained on the premise that the number of activated subcarriers included in the CBRU is the configuration 2 in Table 2, one RU cannot be equally divided into multiple CBRUs, if it is desired to ensure each RU in the PDCCH region. Corresponding to a coverage level, there may be unallocated time-frequency resources in the RU. As shown in FIG. 8, the 29th active subcarrier corresponding to slot 2 in the frame with the odd subframe number is an idle resource and is not utilized. Similarly, it can be seen from FIG. 8 that the activated subcarriers No. 24 to No. 29 corresponding to the slot 8 in the subframe with the odd subframe number are idle resources, and the slot 12 in the subframe with the odd subframe number is odd. Corresponding 26th The number to the 29th activated subcarrier is an idle resource. As shown in FIG. 11, the 28th to 29th activated subcarriers corresponding to the slot 1 in the subframe with the odd frame number are idle resources, and the 21st subframe corresponding to the slot 5 in the frame with the odd subframe number is The activated subcarrier No. 29 is an idle resource, and the activated subcarriers No. 23 to No. 29 corresponding to the slot 8 in the frame with an odd subframe number are idle resources.

As shown in FIG. 8, under the premise that the number of activated subcarriers included in the CBRU is the configuration 2 in Table 2, if it is desired to ensure that each RU in the PDCCH region corresponds to one coverage level, then the CBRU corresponding to one coverage level After the number is sufficient, the allocation of the CBRU corresponding to the next coverage level must be performed starting from the next unassigned neighboring RU.

On the premise that the number of activated subcarriers included in the CBRU is the configuration 2 in Table 2, if it is desired to ensure that each RU in the PDCCH region corresponds to one coverage level, then after the number of CBRUs corresponding to one coverage level is sufficient, A certain amount of idle resources is required, and the allocation of the CBRU corresponding to the next coverage level needs to be started from the next RU. As shown in FIG. 11, a part of the three RUs corresponding to the time slot 5 in the frame with an odd subframe number corresponds to the coverage level 2, and a part of the RU corresponds to the coverage level 3. There is a period of idle between the coverage level 2 and the coverage level 3. For the same resource, a part of the three RUs corresponding to the time slot 8 in the frame with an odd subframe number corresponds to the coverage level 3, and a part of the RU corresponds to the coverage level 4. There is a spare resource between the coverage level 3 and the coverage level 4. .

Finally, step 102 is executed to determine a pilot sequence carried by each resource unit RU constituting the resource according to the coverage level corresponding to the resource.

In order to distinguish the resources for carrying the PDCCH corresponding to the different coverage levels, the REs used to carry the pilot sequence in the RU may be used to carry different pilot sequences, and the pilot sequence is used to indicate the bearer PDCCH corresponding to each coverage level. For details, refer to the following description of the method for the BS to indicate the type of schedulable time-frequency resource of the scheduling period.

The foregoing is the entire process of the resource allocation method provided by the embodiment of the present invention. The resource allocation method provided by the embodiment of the present invention implements a flexible allocation of a resource for carrying a PDCCH and a resource for carrying a PDSCH, and improves a resource for a fixed partition for carrying a PDCCH and a resource for carrying a PDSCH in the prior art. The allocation method also changes the resource allocation method in the prior art that the resource for carrying the PDCCH is fixedly divided into portions corresponding to the coverage level.

As described above, for the UE, in order to receive the PDCCH, the UE first needs to know the location of the resource for carrying the PDCCH corresponding to the coverage level to which the UE belongs, and then find the PDCCH sent by the BS to the UE from the location. . After the application of the method provided by the embodiment of the present invention to complete the resource allocation, the embodiment of the present invention provides a method for facilitating the UE to know the location of the resource for carrying the PDCCH corresponding to the coverage level to which the UE belongs. The method for indicating the type of schedulable time-frequency resource of the scheduling period by the BS, and the method for identifying the type of the schedulable time-frequency resource for the UE to identify the scheduling period.

The method of indicating the resource type by the BS will be described in detail below. Please refer to Figure 22, including the following steps:

Step 201: Determine a pilot sequence that is carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, The schedulable periodic time-frequency resource type includes a third resource and a fourth resource, where the third resource corresponds to a coverage level that the user equipment has, and the fourth resource is used to carry the physical downlink shared channel PDSCH.

Step 202: Send the pilot sequence to the user equipment.

In the embodiment of the present invention, the concepts of the RU, the time slot, and the RE are the same as those in the foregoing, and are not described herein again.

In the embodiment of the present invention, 15 REs form a group of time-frequency resource groups for carrying pilot sequences;

Specifically, 15 REs with the same symbol number or different symbol numbers form a group A time-frequency resource group used to carry pilot sequences.

Referring to FIG. 3, FIG. 4, FIG. 14 to FIG. 17, and FIG. 20, 15 REs having the same symbol number form a group of time-frequency resource groups for carrying pilot sequences. Referring to FIG. 5 and FIG. 17 to FIG. 19, 15 REs with different symbol numbers form a group of time-frequency resource groups for carrying pilot sequences.

As shown in FIG. 5 and FIG. 17 to FIG. 19, one RU includes a first group of time-frequency resources for carrying pilot sequences and a second group of time-frequency resources for carrying pilot sequences, and two groups are used for carrying pilots. The time-frequency resources of the sequence include 15 REs, and there are frequency intervals between two active sub-carriers corresponding to any two REs of the time-frequency resources used by the two groups for carrying the pilot sequence. For example, the partial RE of the symbol 2 and the partial RE of the symbol 6 are used as the first group of time-frequency resources for carrying the pilot sequence, and the partial RE of the symbol 10 and the partial RE of the symbol 14 and the partial RE are used as the second group. For the time-frequency resource carrying the pilot sequence, or part of the RE of symbol 2, part RE of symbol 10 as the first group of time-frequency resources for carrying the pilot sequence, and part RE of symbol 6 and symbol 14 The partial RE acts as a second group of time-frequency resources for carrying the pilot sequence.

In the embodiment of the present invention, the first implementation manner is: the RU carries one of the pilot sequences, and the one pilot sequence is carried by the group of time-frequency resource groups used to carry the pilot sequence. . That is, there is a pilot sequence in an RU, and the pilot sequence is carried by a group of time-frequency resource groups for carrying pilot sequences.

For example, a RU as shown in FIG. 19 carries a pilot sequence of length 15. The pilot sequence of length 15 is carried in a group of time-frequency resource groups for carrying a pilot sequence as shown in FIG. .

In the embodiment of the present invention, the second implementation manner is: the RU carries one of the pilot sequences, and the one pilot sequence is jointly carried by at least one group of time-frequency resource groups for carrying pilot sequences. . That is, one RU carries a pilot sequence, and the pilot sequence is carried by multiple groups of time-frequency resource groups for carrying pilot sequences.

One RU as shown in FIG. 4 carries a pilot sequence of length 30, and the pilot sequence of length 30 is carried in the two groups of time-frequency resource groups for carrying the pilot sequence shown in FIG. 4.

In the embodiment of the present invention, the third implementation manner is: the RU carries at least one pilot sequence, and each pilot sequence in the at least one pilot sequence is used by a group to carry pilots. The time-frequency resource group of the sequence is carried.

As shown in FIG. 4, one RU carries two pilot sequences of length 15, and two pilot sequences of length 15 are respectively carried in a group of time-frequency resource groups for carrying pilot sequences as shown in FIG. . Specifically, as shown in FIG. 4, the symbols 5 and 11 and the corresponding 15 consecutive activated subcarriers respectively carry the pilot sequence 1 and the pilot sequence 2, and the two pilot sequences are uniformly distributed in one RU. Alternatively, as shown in FIG. 17, symbols 4 and 12 and corresponding 15 consecutive activated subcarriers respectively carry pilot sequence 1 and pilot sequence 2, and the cooperative estimation between the RUs can be utilized to improve performance. Or as shown in FIG. 18, 8 frequency-frequency activated subcarriers corresponding to symbol 2 and symbol 2, and 7 frequency-interval activated subcarriers corresponding to symbol 14 and symbol 14 are used as a group for carrying pilot sequences. Time-frequency resources, jointly carrying pilot sequence 1, eight frequency-frequency activated subcarriers corresponding to symbol 10 and symbol 10, and seven frequency-interval activated subcarriers corresponding to symbol 6 and symbol 6 as a group The time-frequency resources carrying the pilot sequences jointly carry the pilot sequence 2.

As shown in FIG. 3, one RU carries three pilot sequences of length 15, and three pilot sequences of length 15 are respectively carried in a group of time-frequency resource groups for carrying pilot sequences as shown in FIG. . Specifically, as shown in FIG. 3, symbols 3, 8, 13, and corresponding 15 consecutive activated subcarriers respectively carry pilot sequence 1, pilot sequence 2, and pilot sequence 3, where three pilot sequences are in one The distribution within the RU is relatively uniform. Or as shown in FIG. 14, the symbols 4, 8, 12 and the corresponding 15 consecutive activated subcarriers respectively carry the pilot sequence 1, the pilot sequence 2 and the pilot sequence 3. Or as shown in FIG. 15, the symbols 3, 7, 12 and the corresponding 15 consecutive activated subcarriers respectively carry the pilot sequence 1, the pilot sequence 2 and the pilot sequence 3. Or, as shown in FIG. 16, the symbols 2, 8, 14 and the corresponding 15 consecutive activated subcarriers respectively carry the pilot sequence 1, the pilot sequence 2 and the pilot sequence 3, and the correlation estimation between the RUs can be improved. performance.

In a fourth implementation manner, the fourth implementation manner is: the RU carries at least one pilot sequence, and each pilot sequence in the at least one pilot sequence is used by at least one group. The time-frequency resource groups of the frequency sequence are jointly carried. That is, one RU carries multiple pilot sequences, and each pilot sequence in multiple pilot sequences is carried in multiple groups of time-frequency resource groups for carrying pilot sequences.

As shown in FIG. 20, one RU carries two pilot sequences of length 30, and two lengths are 30. The pilot sequences are respectively carried in the two groups of time-frequency resource groups for carrying the pilot sequences shown in FIG. As shown in FIG. 20, the pilot sequence 1 carries a partial RE of symbol 2, a partial RE of symbol 6, and a pilot sequence 2 carries a partial RE of symbol 10 and a partial RE of symbol 14.

As mentioned above, in the RU, a part of REs are used to carry data packets, and a part of REs are used to carry RSs. The base station can first use the RE in the RU to carry the data packet. For example, if one RU is allocated to the PDCCH, a part of the REs in the RU carry the PDCCH data packet. For another example, if one RU is allocated to a PDCCH corresponding to one coverage level, a part of the REs in the RU carries a PDCCH data packet corresponding to the coverage level. If a PDCCH region corresponding to the coverage level needs to carry multiple PDCCH data packets, the location of each CBRU in the multiple CBRUs included in the PDCCH region corresponding to the coverage level may be pre-agreed, thereby reducing the UE search BS to send to the UE itself. The number of searches for the PDCCH code block. include:

Wherein, the correspondence may be pre-agreed. A pre-agreed rule includes the following steps:

Step 1: Each CBRU number of the plurality of CBRUs included in the PDCCH region of the coverage level.

Step 2: Determine whether there is a common PDCCH data packet. If there is a common PDCCH data packet, go to the third step. If there is no public PDCCH data packet, go to the fifth step.

The third step: if there is a common PDCCH data packet, pre-arrange which CBRU that carries the PDCCH common data packet is. If there are multiple PDCCH common data packets, what are the CBRUs that pre-arranged to carry multiple PDCCH common data packets? One. For example, if there is one common PDCCH data packet, the first CBRU bearer PDCCH common data packet is pre-agreed. If there are three common data packets, the first three CBRUs may be pre-scheduled to carry three PDCCH common data packets.

The fourth step: re-numbering the remaining CBRUs except the bearer of the common PDCCH data packet, and pre-arranging the dedicated PDCCH data packet carrying the UE according to the identifier of the UE. It is assumed that, except for the remaining C CRUs that carry the common PDCCH data packet, one or more CBRUs carrying the dedicated PDCCH data packets of the UE are pre-agreed according to the identifier of the UE. For example: the identity of the UE is C-RNTI (Cell Radio Network Temporary Identifier), if each UE has one dedicated PDCCH data packet, the CBRU number of the dedicated PDCCH data packet carrying the UE is: C-RNTI mod N, where mod represents C-RNTI divided by N The remainder is taken, that is, the number of the CBRU carrying the dedicated PDCCH data packet of the UE is the remainder obtained by dividing the C-RNTI of the UE by N. If each UE has M dedicated PDCCH data packets, and each of the N CBRUs is a group (N/M group), the group number of the CBRU carried by the M modules of the UE is (C-RNTI mod). (N/M)); the identity of the UE is not limited to the C-RNTI, and may be the group identity code Group_ID assigned by the BS to the UE or the device identifier of the UE after the BS groups the multiple UEs.

The BS can reduce the waste of PDCCH resources by the allocation of C-RNTI or Group_ID and reasonable scheduling. For example, the C-RNTI or Group_ID allocated by the BS for each coverage level UE is uniform.

Another pre-agreed rule is similar to the LTE PDCCH search space and will not be described here.

In the process of using the RE in the RU to carry the data packet, the number of repetition coding times of the PDCCH data packet corresponding to each coverage level is considered, for example, the number of repeated coding times of the PDCCH data packet corresponding to the four coverage levels shown in Table 1. The following are: 1, 1, 2, and 2, taking the coverage level 3 as an example. If the repetition coding is required twice, the PDCCH data packet covering the level 3 is sent once in each scheduling period. The embodiment of the present invention proposes that the start time of the first PDCCH data packet transmission with the number of times of coding is greater than or equal to 1 according to a predetermined rule, so that the BS repeatedly transmits the PDCCH data packet according to the convention, and the UE can determine the first PDCCH data according to a predetermined rule. The start time of the packet transmission.

The predetermined rule is specifically: for the 2x repetition coding, the first PDCCH data packet of the coverage level is transmitted in the scheduling period when the (subframe number modulo 2=1), and the scheduling is performed at (subframe number modulo 2=3). The second PDCCH packet of the coverage level is periodically transmitted. For 4-times repetition coding, the first PDCCH data packet of the coverage level is transmitted in a scheduling period (subframe number modulo 4=1), and the coverage level is transmitted in a scheduling period (subframe number modulo 4=3) The second PDCCH data packet transmits the third PDCCH data packet of the coverage level in a scheduling period (subframe number modulo 4=5), and is transmitted in a scheduling period (subframe number modulo 4 times=7) The fourth PDCCH packet of the coverage level.

Taking 2x repetition as an example, the coverage level of the coverage level is transmitted in the scheduling period (subframe number modulo 4=1). A PDCCH data packet transmits a second PDCCH data packet of the coverage level in a scheduling period when (subframe number modulo 4 = 3). As shown in FIG. 12, one scheduling period includes durations of two subframes, the first scheduling period includes a sum of durations of subframe 1 and subframe 2 of the ith frame, and the second scheduling period includes subframe 3 and subframes of the ith frame. 4. The BS transmits the first PDCCH packet that is repeatedly encoded, that is, packet 1, in the slot of subframe 1 of the i-th frame. The BS transmits the repeatedly encoded second PDCCH packet, i.e., packet 1', in the slot of subframe 3 of the i-th frame. The same PDCCH packet is sent twice in one scheduling period. The period required to transmit the two identical PDCCH packets that are repeatedly encoded is referred to as a 2-fold repetition coding period.

Taking the 4x repetition as an example, the first PDCCH data packet of the coverage level is transmitted in the scheduling period when the subframe number is modulo 4=1, and the coverage level is transmitted in the scheduling period when the subframe number is modulo 4=3. The second PDCCH data packet transmits the third PDCCH data packet of the coverage level in a scheduling period (subframe number modulo 4=5), and the coverage period is transmitted during the scheduling period (subframe number modulo 4=7) The fourth module of the class. As shown in FIG. 13, one scheduling period includes durations of two subframes, the first scheduling period includes a sum of durations of subframe 1 and subframe 2 of the ith frame, and the second scheduling period includes subframe 3 and subframes of the ith frame. 4. The third scheduling period includes subframe 5 and subframe 6 of the ith frame, and the fourth scheduling period includes subframe 7 of the ith frame and subframe 0 of the i+1th frame. The BS transmits the first PDCCH packet that is repeatedly encoded, that is, packet 1, in the slot of subframe 1 of the i-th frame. The BS transmits the repeatedly encoded second PDCCH packet, i.e., packet 1', in the slot of subframe 3 of the i-th frame. The BS transmits the repeatedly encoded third PDCCH packet, that is, the packet 1" in the slot of the subframe 5 of the i-th frame. The BS transmits the repeated coding in the slot of the subframe 7 of the i-th frame. Four PDCCH packets, ie packet 1"'. The same PDCCH packet is sent four times in one scheduling period. The period required to transmit the four identical PDCCH packets repeatedly encoded is referred to as a 4-fold repetition coding period.

The following describes the process by which the BS carries the RS by using the RE in the RU. According to the resource allocation method provided by the embodiment of the present invention, the data types that a RU may carry are: PDCCH and PDSCH, where the PDCCH corresponds to different coverage levels. In order to facilitate the UE to distinguish between the PDCCH or the PSCCH and the PDCCH corresponding to the coverage level, the embodiment of the present invention proposes that the BS uses the RE bearer RS in the RU to distinguish the type of data carried by the RU through the RS.

First, explain the RS in detail.

In the embodiment of the present invention, the RS is a pilot sequence with an integer multiple of 15.

The sequence whose length is an integral multiple of 15 is generated by a ZC sequence, or the sequence whose length is an integer multiple of 15 is generated by an m sequence, or the sequence whose length is an integer multiple of 15 is a Gold sequence. Generated.

Taking the ZC sequence of length 15 as an example, the pilot sequence is:

among them,

N _zc =15, u is the root of the ZC sequence,

For cyclic shift CS, M represents a different total number of cyclic shifts that need to be generated.

One way to obtain multiple sequences is: all ZC sequences use the same root, different sequences use different CS, and all sequences have roots u=1, with different

Represents a different sequence, where M is the number of sequences required, and M = 5 if 5 different sequences are required. As shown in Table 9, Table 9 lists the different ZC sequences obtained by taking m different values.

Table 9 Different ZC sequences obtained by taking different values of m

ZC序列ZC sequence	m的取值Value of m
ZC序列ZC sequence	m的取值Value of m
序列1Sequence 1	00
序列1Sequence 1	00	序列2Sequence 2	11
序列3 Sequence 3	22	序列2Sequence 2	11
序列3 Sequence 3	22	序列4Sequence 4	33

Sequence 5

4

Another way to obtain multiple sequences is to use the same CS for all ZC sequences, such as α=0, with different roots representing different sequences. In this case, preferably, the difference between these roots is between N _zc =15. It is mutual quality. As shown in Table 10, Table 10 lists three different ZC sequences as examples, and lists different ZC sequences obtained by taking different values.

Table 10 u take different ZC sequences with different values

ZC序列ZC sequence	u的取值The value of u
ZC序列ZC sequence	u的取值The value of u
序列1Sequence 1	22
序列1Sequence 1	22	序列2Sequence 2	44
序列3 Sequence 3	66	序列2Sequence 2	44

Yet another way to obtain multiple sequences is to use different combinations of different roots and different CSs to obtain different ZC sequences. Preferably, the difference between these roots is relatively prime with N _zc =15. Please refer to Table 11. Table 11 lists the five different ZC sequences obtained by taking M=2 and u taking different values.

Table 11 Different ZC sequences obtained by combining m and u with different values

序列sequence	m的取值Value of m	u的取值The value of u
序列sequence	m的取值Value of m	u的取值The value of u
序列1Sequence 1	00	22
序列1Sequence 1	00	22	序列2Sequence 2	11	22
序列3 Sequence 3	00	44	序列2Sequence 2	11	22

序列4Sequence 4	11	44
序列4Sequence 4	11	44	序列5 Sequence 5	00	66

Another way to obtain multiple sequences is: N _zc =13, all sequences use the same CS, for example α = 0, different roots are used to represent different sequences, and the difference between these roots and N _zc = 13 is mutual Qualitative. Please refer to Table 12. Table 12 lists the five different ZC sequences obtained by taking different values.

Table 12 u take different ZC sequences with different values

序列sequence	u的取值The value of u
序列sequence	u的取值The value of u
序列1Sequence 1	22
序列1Sequence 1	22	序列2Sequence 2	33
序列3 Sequence 3	55	序列2Sequence 2	33
序列3 Sequence 3	55	序列4Sequence 4	77
序列5 Sequence 5	1111	序列4Sequence 4	77

At this time, since N _zc =13, the length of the ZC sequence is 13. For example, a ZC sequence of length 15 is obtained, and a pilot sequence needs to be generated in an extended manner. One of the extended ways is:

If multiple sequences are generated by an m sequence of length 15, the pilot sequence can be used

s(i)=y((i+n)mod15), i=0,1,...,14 denotes where y(i)=1-2x(i),i=0,1,.. .14, the sequence x(i) satisfies: x(i+4)=x(i+3)+x(i)mod2 or x(i+4)=x(i+1)+x(i)mod2 And x(0)=0, x(1)=0, x(2)=0, x(3)=1. As shown in Table 13, different shifts n are used to obtain different pilot sequences.

Table 13 Different ZC sequences obtained by taking different values

序列sequence	n的取值Value of n
序列sequence	n的取值Value of n
序列1Sequence 1	00
序列1Sequence 1	00	序列2Sequence 2	33
序列3 Sequence 3	66	序列2Sequence 2	33
序列3 Sequence 3	66	序列4Sequence 4	99
序列5 Sequence 5	1212	序列4Sequence 4	99

Or use different initial values to represent different sequences.

If the pilot sequence length is 30, different sequences can be generated from N _zc = 30 or N _zc = 31 or N _zc = 29 ZC sequences, such as N _zc =29, then

If N _zc =31, then:

As previously mentioned, a plurality of different sequences can be generated by employing different roots and/or different cyclic shifts.

In the same manner, a plurality of sequences of length 30 can be generated using different shift truncations of the m-sequence of length 31.

The Gold sequence, generated by two m-sequences, can generate a plurality of different Gold sequences of integer multiples of 15 in the same manner. I won't go into details here.

Similarly, other sequences of integer multiples of 15 can be generated in the same manner. I won't go into details here.

The BS uses the RE bearer RS in the RU to indicate the type of data carried by the RU, and has the following indication manners:

The first indication manner is that the pilot sequence indicates the type of the schedulable periodic time-frequency resource. The pilot sequence in the RU carrying the PDCCH is different from the pilot sequence in the RU carrying the PDSCH, and the pilot sequence in the RU carrying the PDCCH of each coverage level is different from the pilot sequence of the RU carrying the PDSCH. One possible indication is that all pilot sequences carried by one RU are the same, and the pilot sequences of RUs carrying different data types are different. That is, the type of time-frequency resource of the schedulable period is indicated by a different pilot sequence.

If 30 REs of an RU are used to carry a pilot sequence with a length of 15, there are two sets of pilot resources in one RU. If the five types of resources need to be represented as an example, an implementation manner is shown in Table 14. .

Table 14 shows an implementation of the type of data carried by the RU

If 45 REs of an RU are used to carry a pilot sequence of length 15, there are three sets of pilot resources in one RU. If five types of resources need to be represented as an example, an implementation manner is shown in Table 15. .

Table 15 shows an implementation of the type of data carried by the RU

If 30 REs of an RU are used to carry a pilot sequence of length 30, there are two sets of pilot resources in a RU with a total of 30 REs, each carrying an element of a pilot sequence of length 30. If you need to represent five types of resources as an example, one implementation is shown in Table 16.

Table 16 shows an implementation of the type of data carried by the RU

If 45 REs of an RU are used to carry a pilot sequence of length 45, there are two sets of pilot resources in a RU with a total of 45 REs, each carrying an element of a pilot sequence of length 45. If you need to represent five types of resources as an example, one implementation is shown in Table 17.

Table 17 shows an implementation of the type of data carried by the RU

Another possible indication is that a combination of at least two of the pilot sequences indicates the type of the schedulable periodic time-frequency resource. That is to say, any two pilot sequences in all pilot sequences carried by one RU are different, and the combinations of pilot sequences carrying RUs of different data types are different.

If the 30 REs of an RU are used to carry the pilot sequence, there are two sets of pilot resources in one RU. If the five types of resources need to be represented as an example, one implementation is shown in Table 18.

Table 18 shows an implementation of the type of data carried by the RU

If the 45 REs of an RU are used to carry the pilot sequence, there are three sets of pilot resources in one RU. If the five types of resources need to be represented as an example, one implementation is shown in Table 19.

Table 19 shows an implementation of the type of data carried by the RU

The second indication mode is: whether the data type of the RU bearer changes by using the pilot sequence in the RU. If the data type of the RU bearer changes, the pilot sequence in the RU changes, if the data carried by the RU The type remains unchanged and the pilot sequence in the RU does not change. That is, if the data type of the next RU is the same as that of the current RU, the pilot sequences carried by the two RUs are the same, otherwise the pilot sequences carried by the two RUs are different.

For example, it is assumed that the pilot sequence carried in the RU of the first slot of the odd subframe is sequence 1, indicating that the RU bears the PDCCH corresponding to level 1 and the next RU is still carrying the PDCCH corresponding to the coverage level 1. The pilot sequence carried in the next RU is also sequence 1; if the data type of the next RU bearer is different from the data type carried by the current RU, for example, the PDCCH corresponding to the coverage level 2 of the next RU bearer bearer, the bearer in the next RU The pilot sequence is sequence 2.

The third indication manner is: the pilot sequence indicates the size of the schedulable periodic time-frequency resource, and different types of schedulable time-frequency resources have different sizes, and different pilot sequences are used to indicate different types of the schedulable period. The size of the time-frequency resource. That is to say, the number of RUs carrying different data types or the number of CBRUs is represented by a pilot sequence of a bearer of a specific specific RU. The pilot sequences used by the RUs and the pilot sequences carried by the RUs indicate the data types carried by the RUs, which may be pre-agreed or reconfigured according to the broadcast message.

Specifically, the number of RUs carrying the PDCCH and the number of RUs carrying the PDSCH are indicated by a pilot sequence on a specific RU. Or the number of RUs carrying PDCCHs of different coverage levels and the number of RUs carrying PDSCH are indicated by a pilot sequence on a specific RU.

For example, the number of RUs carrying the PDCCH carrying the coverage level 1 is indicated by the pilot sequence carried by the RU on the first time slot starting from the scheduling period, and the RUs on the second and third time slots starting with the scheduling period are utilized. The bearer pilot sequence is used to indicate the number of RUs carrying the PDCCH of the coverage level 2, and the pilot sequence carried by the RUs on the fourth, fifth, and sixth time slots starting from the scheduling period is used to indicate bearer coverage. The number of RUs of the PDCCH of level 3 is indicated by the pilot sequence carried by the RUs on the sixth, seventh, eighth, and nine time slots starting from the scheduling period, and the number of RUs carrying the PDCCH of the coverage level 4 is indicated. The remaining RUs carrying the PDSCH.

Different pilot sequences, corresponding to the number of different types of RUs, or the number of CBRUs corresponding to different coverage levels, the pilot sequence and the resource size represented by it, can be configured in a broadcast message, and each coverage can have the same Configuration can also have different configurations. Please refer to Table 20, which lists the configuration of 3 in the size of the number of CBRUs corresponding to different pilot sequences.

Table 20 CBRU quantity configuration table

Further, if one RU carries multiple data types, the pilot sequence indicates a high priority data type or corresponds to a different RU type. As mentioned in the foregoing, one RU can carry PDCCHs of different coverage levels, or one RU can carry both PDCCH and PDSCH. Then, the pilot sequence indicates a high priority data type, or the pilot sequence indicates a corresponding RU type according to a predefined rule.

For example, the priority of the data type carried in an RU is determined according to a predefined rule or a manner in which the PBCH message is used to notify the UE. If the PDCCH is a high priority, and the PDCCH can only use the active subcarriers 0-7, the pilot sequence can determine which PDCCHs of the coverage class are carried by the active subcarriers in the RU, and the remaining active subcarriers carry the PDSCH. .

The foregoing is the entire process of the method for the BS to indicate the type of the schedulable time-frequency resource of the scheduling period provided by the embodiment of the present invention. Corresponding to the method of the type of the schedulable time-frequency resource that the BS indicates the scheduling period, the following describes the type of the schedulable time-frequency resource of the UE identification scheduling period provided by the embodiment of the present invention. law. Please refer to Figure 23, including the following steps:

Step 301: The user equipment UE determines the coverage level of the UE.

Step 302: The UE obtains a pilot sequence carried by a schedulable resource in a scheduling period according to at least one pilot sequence stored by the UE.

Step 303: The UE determines, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.

The method for the UE to determine the coverage level of the UE in step 301 is:

The base station may send the frequency reuse factor of the base station in the broadcast message, and after de-broadcasting, the UE obtains the frequency reuse factor of the base station and the sub-band information of the UE operation. The UE determines its own coverage level according to its own channel state, and sends a random access request signal to the BS. The random access request signal includes the coverage level information determined by the UE itself, and the BS receives the random access request signal of the UE, and sends the UE a random access request signal to the UE. And sending a random access response signal, where the random access response signal carries the coverage level of the UE determined by the base station. The UE uses the coverage level of the UE determined by the base station as the UE's own coverage level.

Step 302: The UE determines, as the scheduling period, a sequence in which at least one pilot sequence stored by the UE is the most correlated with a pilot sequence of a RU bearer included in the schedulable resource of the scheduling period. A pilot sequence carried by a resource can be scheduled.

The specific implementation process is as follows: the UE uses the locally stored pilot sequence to correlate with the pilot sequence in the RU, where the sequence with the largest correlation peak is considered to be the pilot carried in the RU. sequence.

The specific implementation process of the step 303 is that the UE can determine the PDCCH resource that carries the coverage level of the UE, because the UE knows the type of the schedulable periodic time-frequency resource indicated by the pilot sequence stored by the UE. The UE may combine the correlation results of multiple pilot sequences in one RU with the local pilot sequence of the UE, or merge, because each of the multiple RUs of the schedulable resource that constitutes the scheduling period carries one multiple pilot sequence. The comparison result of the multiple pilot sequences in the multiple RUs with the UE local pilot sequence, thereby improving the accuracy of the PDCCH resources that the UE determines the coverage level of the UE.

Based on the same inventive concept, the embodiment of the present invention further provides a method for receiving a data packet. Referring to FIG. 24, the method includes the following steps:

Step 401: The user equipment UE determines the coverage level of the UE.

Step 402: The UE determines, according to the coverage level of the UE, a resource corresponding to the coverage level.

Step 403: The UE receives a data packet of the UE on a predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, where the location of the predetermined CBRU corresponds to the device identifier of the UE.

Specifically, the implementation process of the step 401 and the step 402 may refer to the implementation process of the foregoing steps 301 to 303, and details are not described herein again. After the UE determines the resource for carrying the PDCCH corresponding to the coverage level of the UE, as previously mentioned, the location of each CBRU in the multiple CBRUs included in the PDCCH region of the coverage level of the UE may be pre-agreed, and the device identifier of the UE is set. Corresponding relationship between the identifiers of the CBRUs of the multiple CBRUs included in the PDCCH region of the coverage level of the UE, so that the UE can find the corresponding CBRU according to the device identifier of the UE in the PDCCH region of the coverage level of the UE. The identifier is then received by the PDCCH sent by the BS to the UE.

In the embodiment of the present invention, the coverage level is 4 as an example. If the number of coverage levels changes, it is also within the protection scope of the present invention. That is to say, different pilot sequences can be used to represent PDCCH regions and PDSCH regions of different coverage levels.

If the PDSCH area needs to be divided into different types of areas, the method according to the present invention may also be used to represent different types of PDSCH areas by using different pilot sequences, for example, dividing the PDSCH area into PDSCH areas of different coverage levels.

If the PDCCH region of each coverage level is separately divided into a PDCCH region carrying dedicated signaling and a PDCCH region carrying common signaling, the method according to the present invention may also be used to represent different coverage levels by using different pilot sequences. A PDCCH region carrying dedicated signaling and a PDCCH region carrying common signaling.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for resource allocation.

Referring to FIG. 25, FIG. 25 is a schematic block diagram of a device for resource allocation according to an embodiment of the present invention. For the meanings and specific implementations of the terms related to the device for resource allocation shown in FIG. 25, reference may be made to the foregoing descriptions of FIGS. 1 to 24 and the related embodiments. The apparatus includes a resource allocation unit 2501 and a pilot sequence determining unit 2502.

The resource allocation unit 2501 is configured to determine, according to the number of data packets that need to be sent to the user equipment in the scheduling period, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, where the user equipment has coverage a level, the resource corresponding to the coverage level;

The pilot sequence determining unit 2502 is configured to determine, according to the coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource;

Optionally, the schedulable time-frequency resource of the scheduling period includes:

Optionally, the resource allocation unit is configured to:

Optionally, the resource allocation unit includes:

a resource allocation sub-unit, configured to determine, according to the number of CBRUs corresponding to the coverage level and the CBRU corresponding to the coverage level, from the schedulable time-frequency resources of the scheduling period, A resource of a data packet, the resource being composed of at least one CBRU corresponding to the coverage level.

Optionally, the resource is composed of at least one CBRU corresponding to the coverage level, including:

Optionally, the resource carrying the data packet is composed of at least one RU.

Optionally, the number of activated subcarriers included in the frequency domain by the CBRU corresponding to the coverage level is determined according to the number of activated subcarriers included in the frequency domain by the RU.

Optionally, the location of the CBRU corresponding to the coverage level in the schedulable time-frequency resource of the scheduling period has a corresponding relationship with the device identifier of the user equipment.

Optionally, the resource allocation unit 2501 is configured to:

Optionally, the one time slot includes 17 orthogonal frequency division multiplexing OFDM symbols.

Optionally, the data packet includes:

Data other than PBCH and PSCH, or data other than PSCH.

Optionally, the data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.

The various changes and specific examples in the foregoing method for resource allocation in the foregoing embodiment of FIG. 21 are also applicable to the apparatus for resource allocation in this embodiment. The foregoing detailed description of the method for resource allocation can be clearly understood by those skilled in the art. The implementation method of the device for resource allocation in this embodiment is known, so for the sake of brevity of the description, it will not be described in detail herein.

Referring to FIG. 26, FIG. 26 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present invention. For the meanings and specific implementations of the terms related to the device for resource allocation shown in FIG. 25, reference may be made to the foregoing descriptions of FIGS. 1 to 24 and the related embodiments. The device comprises: a processor 2601, a storage 2602, bus 2600.

a memory 2602, configured to store program code;

The processor 2601 is connected to the memory 2602 via a bus 2600 for reading the program code to perform: schedulable time from the scheduling period according to the number of data packets that need to be sent to the user equipment during the scheduling period. Determining, by the frequency resource, a resource that carries the data packet, the user equipment has an coverage level, and the resource corresponds to the coverage level; and each resource unit that constitutes the resource is determined according to a coverage level corresponding to the resource. Pilot sequence carried by the RU;

Optionally, the processor 2601 is configured to:

Determining, according to the number of data packets corresponding to the coverage level, a number of code block resource units CBRUs corresponding to the coverage level, where the CBRUs include at least one time slot in the time domain, and include at least one activation in the frequency domain. The time-frequency resources of the sub-carriers are different, and the CBRUs corresponding to the different coverage levels are different; according to the number of CBRUs corresponding to the coverage level and the CBRUs corresponding to the coverage levels, The resource carrying the data packet is determined by the schedulable time-frequency resource of the scheduling period, where the resource is composed of at least one CBRU corresponding to the coverage level.

Optionally, the processor 2601 is configured to:

Optionally, the data packet includes:

Data other than PBCH and PSCH, or data other than PSCH.

Wherein, in FIG. 26, a bus architecture (represented by bus 2600), bus 2600 can include any number of interconnected buses and bridges, and bus 2600 will include one or more processors and memory 2602 represented by processor 2601. The various circuits of the memory are connected together. The bus 2600 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.

The processor 2601 is responsible for managing the bus 2600 and the usual processing, and the memory 2602 can be used. The data used by the storage processor 2601 when performing an operation.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for indicating a resource type.

Referring to FIG. 27, FIG. 27 is a schematic diagram of a module for indicating a resource type according to an embodiment of the present invention. For the meaning of the term referring to the device indicating the resource type shown in FIG. 27 and the specific implementation, reference may be made to the foregoing descriptions of FIG. 1 to FIG. 24 and the related description of the embodiment. The device may be the aforementioned base station. The apparatus includes a determining unit 2701 and a transmitting unit 2702.

The determining unit 2701 is configured to determine a pilot sequence that is carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource. The schedulable periodic time-frequency resource type includes a third resource and a fourth resource, where the third resource is used to carry a physical downlink control channel PDCCH, and the fourth resource is used to carry a physical downlink shared channel PDSCH;

The sending unit 2702 is configured to send the pilot sequence to the user equipment.

Optionally, the RU is a time-frequency resource that includes one time slot in the time domain, and includes at least one active sub-carrier in the frequency domain, where the time slot includes at least one symbol, and the RU includes at least one resource element. RE.

Optionally, 15 REs form a group of time-frequency resource groups for carrying pilot sequences;

The pilot sequence is composed of at least one time-frequency resource group used to carry a pilot sequence in the RU With the same bearer, each of the at least one RU includes at least one set of time-frequency resource groups for carrying pilot sequences.

Optionally, the pilot sequence indicates the type of the schedulable periodic time-frequency resource, including:

Optionally, the pilot sequence is a sequence whose length is an integer multiple of 15;

The various changes and specific examples in the foregoing method for indicating a resource type in the foregoing embodiment of the present invention are also applicable to the apparatus for indicating the resource type in the embodiment, and the foregoing detailed description of the method for indicating the resource type is known to those skilled in the art. The implementation method of the device indicating the resource type in this embodiment can be clearly understood, so that the details of the description are not detailed here.

Referring to FIG. 28, FIG. 28 is a schematic structural diagram of an apparatus for indicating a resource type according to an embodiment of the present invention. For the meaning of the term referring to the device indicating the resource type shown in FIG. 28 and the specific implementation, reference may be made to the foregoing descriptions of FIG. 1 to FIG. 24 and the related description of the embodiment. The device may be the aforementioned base station. The apparatus includes a processor 2801, a memory 2802, a transmitter 2803, and a bus 2800.

a memory 2802, configured to store program code;

The processor 2801 is connected to the memory 2802 via the bus 2800, and is configured to read the program code, to perform: determining a pilot sequence carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is configured by at least one of the RUs The pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, and the type of the schedulable periodic time-frequency resource includes a third resource and a fourth resource, where the third resource is used to carry the physical a downlink control channel PDCCH, where the fourth resource is used to carry a physical downlink shared channel PDSCH;

The transmitter 2803 is connected to the processor 2801 via the bus 2800 to perform: sending the pilot sequence to the user equipment.

Wherein, in FIG. 28, a bus architecture (represented by bus 2800), bus 2800 can include any number of interconnected buses and bridges, and bus 2800 will include one represented by processor 2801. The various circuits of the memory represented by the plurality of processors and the memory 2802 are connected together. The bus 2800 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 2804 provides an interface between bus 2800 and transmitter 2803. Transmitter 2803 can be a transceiver that provides means for communicating with various other devices on a transmission medium.

The processor 2801 is responsible for managing the bus 2800 and the usual processing, and the memory 2802 can be used to store data used by the processor 2801 when performing operations.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for identifying a resource type.

Referring to FIG. 29, FIG. 29 is a schematic diagram of a module for identifying a resource type according to an embodiment of the present invention. For the meaning of the term related to the device for identifying the resource type shown in FIG. 29 and the specific implementation, reference may be made to the foregoing descriptions of FIGS. 1 to 24 and the related embodiments. The device may be the aforementioned user equipment. The apparatus includes a coverage level determining unit 2901, an obtaining unit 2902, and a resource determining unit 2903.

a coverage level determining unit 2901, configured to determine a coverage level of the user equipment UE;

The obtaining unit 2902 is configured to obtain, according to the at least one pilot sequence stored by the UE, a pilot sequence of a schedulable resource bearer of a scheduling period;

The resource determining unit 2903 is configured to determine, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.

Optionally, the obtaining unit 2902 is configured to:

Various changes and specific examples in the method for identifying resource types in the foregoing embodiment of FIG. 23 The apparatus for identifying the resource type of the present embodiment is also applicable to the method for identifying the resource type in the present embodiment by using the foregoing detailed description of the method for identifying the resource type, so that the method for identifying the resource type in the embodiment is known. Concise, no longer detailed here.

Referring to FIG. 30, FIG. 30 is a schematic structural diagram of an apparatus for identifying a resource type according to an embodiment of the present invention. For the meaning of the term related to the device for identifying the resource type shown in FIG. 30 and the specific implementation, reference may be made to the foregoing descriptions of FIG. 1 to FIG. 24 and the related description of the embodiment. The device may be the aforementioned user equipment. The apparatus includes a processor 3001, a memory 3002, and a bus 3000.

a memory 3002, configured to store program code;

The processor 3001 is connected to the memory 3002 through the bus 3000, and is configured to read the program code, to perform: determining a coverage level of the UE; and obtaining a schedulable period of the scheduling period according to the at least one pilot sequence stored by the UE a pilot sequence of the resource bearer; determining, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.

The processor 3001 is configured to:

Wherein, in FIG. 30, a bus architecture (represented by bus 3000), bus 3000 can include any number of interconnected buses and bridges, and bus 3000 will include one or more processors and memory 3002 represented by processor 3001. The various circuits of the memory are connected together. The bus 3000 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein.

The processor 3001 is responsible for managing the bus 3000 and the usual processing, and the memory 3002 can be used to store data used by the processor 3001 when performing operations.

The various changes and specific examples in the foregoing method for identifying the resource type in the embodiment of FIG. 23 are also applicable to the device for identifying the resource type in the embodiment, and the foregoing detailed description of the method for identifying the resource type is known to those skilled in the art. The implementation method of the device for identifying the resource type in this embodiment can be clearly understood, so that the details of the description will not be described in detail herein.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for receiving a data packet.

Please refer to FIG. 31, which is a schematic diagram of a module for receiving a data packet according to an embodiment of the present invention. For the meaning and specific implementation of the terminology involved in the apparatus for receiving a data packet shown in FIG. 31, reference may be made to the foregoing related descriptions of FIG. 1 to FIG. 24 and the embodiment. The device may be the aforementioned user equipment. The apparatus includes a coverage level determining unit 3101, a resource determining unit 3102, and a data packet receiving unit 3103.

a coverage level determining unit 3101, configured to determine a coverage level of the user equipment UE;

The resource determining unit 3102 is configured to determine, according to the coverage level of the UE, a resource corresponding to the coverage level;

a data packet receiving unit 3103, configured to receive, according to a predetermined code block resource unit CBRU location in a resource corresponding to the coverage level, a data packet of the UE, where a location of the predetermined CBRU corresponds to a device identifier of the UE .

The various changes and specific examples in the foregoing method for receiving a data packet in the embodiment of FIG. 24 are also applicable to the apparatus for receiving a data packet in the embodiment, and the foregoing description of the method for receiving the data packet is well known to those skilled in the art. The implementation method of the apparatus for receiving a data packet in this embodiment can be clearly understood, so that the details of the specification will not be described in detail herein.

Please refer to FIG. 32, which is a schematic structural diagram of an apparatus for receiving a data packet according to an embodiment of the present invention. For the meaning and specific implementation of the terminology involved in the apparatus for receiving a data packet shown in FIG. 32, reference may be made to the foregoing description of FIG. 1 to FIG. 24 and the related description of the embodiment. The device may be the aforementioned user equipment. The apparatus includes a processor 3201, a memory 3202, a receiver 3203, and a bus 3200.

a memory 3202, configured to store program code;

The processor 3201 is connected to the memory 3202 via a bus 3200 for reading the program code to perform:

The receiver 3203 is connected to the processor 3201 via the bus 3200 to perform:

Receiving at a predetermined code block resource unit CBRU position among resources corresponding to the coverage level The data packet of the UE, where the location of the predetermined CBRU corresponds to the device identifier of the UE.

Wherein, in FIG. 32, a bus architecture (represented by bus 3200), bus 3200 can include any number of interconnected buses and bridges, and bus 3200 will include one or more processors and memory 3202 represented by processor 3201. The various circuits of the memory are connected together. The bus 3200 can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 3204 provides an interface between bus 3200 and receiver 3203. Receiver 3203 can be a transceiver that provides means for communicating with various other devices on a transmission medium.

The processor 3201 is responsible for managing the bus 3200 and the usual processing, and the memory 3202 can be used to store data used by the processor 3201 when performing operations.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional unit described above is exemplified. In practical applications, the above function assignment can be completed by different functional units as needed. The internal structure of the device is divided into different functional units to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separate. The components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a disk or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art will be able to devise variations or alternatives within the scope of the present invention within the scope of the present invention.

Claims

A method for resource allocation, comprising:

Determining, by the schedulable time-frequency resource of the scheduling period, a resource that carries the data packet, where the user equipment has an coverage level, the resource and the location, according to the number of data packets that need to be sent to the user equipment in the scheduling period. The coverage level corresponds to;

Determining, according to the coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource;

The schedulable time-frequency resource of the scheduling period is composed of at least one RU, and the RU is composed of at least one resource element RE, where the RU includes one time slot in the time domain, and includes at least one in the frequency domain. Activating a time-frequency resource of a subcarrier, the time slot being composed of at least one symbol, the RU comprising an RE for carrying the pilot sequence and an RE for carrying the data packet, the RE being in a time domain A symbol is included above, and a time-frequency resource of an activated subcarrier is included in the frequency domain.
The method according to claim 1, wherein the schedulable time-frequency resource of the scheduling period comprises:

Of all time-frequency resources of the scheduling period, except for the first resource and the second resource; or

Among all the time-frequency resources of the scheduling period, the remaining resources except the second resource;

The first resource is used to carry a physical broadcast channel PBCH, and the second resource is used to carry a physical synchronization channel PSCH.
The method of claim 1 or 2, wherein the determining, by the schedulable time-frequency resource of the scheduling period, the resource that carries the data packet comprises:

Determining a resource carrying the PDCCH from the schedulable time-frequency resources of the scheduling period;

The remaining resources except the resources carrying the PDCCH in the schedulable time-frequency resources of the scheduling period are determined as resources for carrying the PDSCH.
The method according to any one of claims 1-3, wherein the number of data packets that need to be sent to the user equipment according to the scheduling period is from the schedulable time-frequency resources of the scheduling period. Determining the resources that carry the data packet, including:

Determining, according to the number of data packets corresponding to the coverage level, a number of code block resource units CBRUs corresponding to the coverage level, where the CBRUs include at least one time slot in the time domain, and include at least one activation in the frequency domain. Time-frequency resources of subcarriers, different CBRUs corresponding to different coverage levels;

And determining, according to the number of the CBRUs corresponding to the coverage level and the CBRUs corresponding to the coverage levels, the resources that carry the data packets from the schedulable time-frequency resources of the scheduling period, where the resources are at least one The coverage level corresponds to the CBRU composition.
The method of claim 4, wherein the resource consists of at least one CBRU corresponding to the coverage level, including:

The number of time slots included in the time domain of the CBRU corresponding to the coverage level is at least one; or

The number of the activated subcarriers included in the frequency domain of the CBRU corresponding to the coverage level is at least the same as the number of the activated subcarriers included in the frequency domain of the first resource.
The method of any of claims 1-5, wherein the resource carrying the data packet is composed of at least one RU.
The method according to claim 5 or 6, wherein the number of activated subcarriers included in the frequency domain of the CBRU corresponding to the coverage level is determined according to the number of activated subcarriers included in the frequency domain by the RU. of.
A method according to any of claims 5-7, wherein

The location of the CBRU corresponding to the coverage level in the schedulable time-frequency resource of the scheduling period has a corresponding relationship with the device identifier of the user equipment.
The method according to any one of claims 1 to 8, wherein the determining, by the schedulable time-frequency resource of the scheduling period, the resource carrying the data packet comprises:

And determining, according to the order of the coverage level from high to low, the resource carrying the data packet from the schedulable time-frequency resources of the scheduling period, where the resource corresponding to the lowest coverage level is located in the schedulable time of the scheduling period The starting position of the frequency resource.
A method according to any of claims 1-9, wherein said one time slot comprises 17 orthogonal frequency division multiplexed OFDM symbols.
The method of any of claims 1-10, wherein the data packet comprises:

Data other than PBCH and PSCH, or data other than PSCH.
The method according to any one of claims 1 to 11, wherein the data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.
A method for indicating a resource type, comprising:

Determining, by the resource unit, a pilot sequence that is carried by the resource unit, the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, the schedulable period a type of a time-frequency resource, including a third resource and a fourth resource, where the third resource is used to carry a physical downlink control channel PDCCH, and the fourth resource is used to carry a physical downlink shared channel PDSCH;

Sending the pilot sequence to the user equipment.
The method of claim 13 wherein:

The RU is a time-frequency resource including one slot in the time domain and including at least one active subcarrier in the frequency domain, the slot includes at least one symbol, and the RU includes at least one resource element RE.
The method according to claim 14, wherein 15 REs form a group of time-frequency resource groups for carrying pilot sequences;

One of the pilot sequences is carried in the RU, and the one pilot sequence is carried by the set of time-frequency resource groups for carrying pilot sequences or by at least one group for carrying pilot sequences. The frequency resource group bears jointly; or

At least one of the pilot sequences is carried in the RU, and each pilot sequence in the at least one pilot sequence is carried by a group of time-frequency resource groups for carrying pilot sequences or by at least one group Cooperating with a time-frequency resource group carrying a pilot sequence; or

The pilot sequence is jointly carried by at least one time-frequency resource group for carrying a pilot sequence in the RU, and each of the at least one RU includes at least one group for carrying a pilot sequence Frequency resource group.
The method according to any one of claims 13-15, wherein the pilot sequence indicates the type of the schedulable periodic time-frequency resource, including:

The pilot sequence indicates a type of the schedulable periodic time-frequency resource; or

a combination of at least two of the pilot sequences indicating a type of the schedulable periodic time-frequency resource; or

The pilot sequence indicates a size of the schedulable periodic time-frequency resource, and different types of schedulable time-frequency resources have different sizes.
A method according to any one of claims 13-16, wherein the pilot sequence is a sequence of length multiples of 15;

The sequence whose length is an integer multiple of 15 is generated by a ZC sequence, or

The sequence whose length is an integer multiple of 15 is generated by the m sequence, or

The sequence whose length is an integer multiple of 15 is generated by the Gold sequence.
A method for identifying a resource type, comprising:

User equipment UE determines a coverage level of the UE;

Obtaining, by the UE, a pilot sequence of a schedulable resource bearer of a scheduling period according to the at least one pilot sequence stored by the UE;

Determining, by the UE, the resource corresponding to the coverage level according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence.
The method according to claim 18, wherein the UE obtains a pilot sequence of a schedulable resource bearer of a scheduling period according to the pilot sequence stored by the UE, including:

The UE determines, in the at least one pilot sequence that is stored by the UE, a sequence that has the highest correlation with the pilot sequence of the RU that is included in the schedulable resource of the scheduling period, and determines that the scheduling period is a schedulable resource bearer. Pilot sequence.
A method for receiving a data packet, comprising:

User equipment UE determines a coverage level of the UE;

Determining, by the UE, resources corresponding to the coverage level according to the coverage level of the UE;

The UE receives a data packet of the UE on a predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, where the location of the predetermined CBRU corresponds to the device identifier of the UE.
A device for resource allocation, comprising:

a resource allocation unit, configured to determine, according to the number of data packets that need to be sent to the user equipment in the scheduling period, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, where the user equipment has a coverage level The resource corresponds to the coverage level;

a pilot sequence determining unit, configured to determine, according to a coverage level corresponding to the resource, a pilot sequence carried by each resource unit RU that constitutes the resource;

The schedulable time-frequency resource of the scheduling period is composed of at least one RU, and the RU is composed of at least one resource element RE, where the RU includes one time slot in the time domain, and includes at least one in the frequency domain. Activating a time-frequency resource of a subcarrier, the time slot being composed of at least one symbol, the RU comprising an RE for carrying the pilot sequence and an RE for carrying the data packet, the RE being in a time domain A symbol is included above, and a time-frequency resource of an activated subcarrier is included in the frequency domain.
The device according to claim 21, wherein the schedulable time-frequency resource of the scheduling period comprises:

Of all time-frequency resources of the scheduling period, except for the first resource and the second resource; or

Among all the time-frequency resources of the scheduling period, the remaining resources except the second resource;

The first resource is used to carry a physical broadcast channel PBCH, and the second resource is used to carry a physical synchronization channel PSCH.
The device of claim 21 or 22, wherein the resource allocation unit is configured to:

Determining a resource carrying the PDCCH from the schedulable time-frequency resources of the scheduling period;

The remaining resources except the resources carrying the PDCCH in the schedulable time-frequency resources of the scheduling period are determined as resources for carrying the PDSCH.
The device according to any one of claims 21-23, wherein the resource allocation unit comprises:

Determining a sub-unit, configured to determine, according to the number of data packets corresponding to the coverage level, a number of code block resource units CBRUs corresponding to the coverage level, where the CBRUs include at least one time slot in the time domain, and are in frequency The time domain resource of the at least one active subcarrier is included in the domain, and the CBRUs corresponding to different coverage levels are different;

a resource allocation sub-unit, configured to determine, according to the number of CBRUs corresponding to the coverage level and a CBRU corresponding to the coverage level, resources that carry the data packet from the schedulable time-frequency resources of the scheduling period, The resource consists of at least one CBRU corresponding to the coverage level.
The device according to claim 24, wherein the resource is composed of at least one CBRU corresponding to the coverage level, and includes:

The number of time slots included in the time domain of the CBRU corresponding to the coverage level is at least one; or

The number of the activated subcarriers included in the frequency domain of the CBRU corresponding to the coverage level is at least the same as the number of the activated subcarriers included in the frequency domain of the first resource.
The apparatus according to any one of claims 21-25, wherein said resource carrying said data packet is composed of at least one RU.
The apparatus according to claim 25 or 26, wherein the number of activated subcarriers included in the frequency domain of the CBRU corresponding to the coverage level is determined according to the number of activated subcarriers included in the frequency domain by the RU of.
A device according to any of claims 25-27, wherein

The location of the CBRU corresponding to the coverage level in the schedulable time-frequency resource of the scheduling period has a corresponding relationship with the device identifier of the user equipment.
The device according to any one of claims 21-28, wherein the resource allocation unit is configured to:

And determining, according to the order of the coverage level from high to low, the resource carrying the data packet from the schedulable time-frequency resources of the scheduling period, where the resource corresponding to the lowest coverage level is located in the schedulable time of the scheduling period The starting position of the frequency resource.
The apparatus according to any one of claims 21-29, wherein said one time slot comprises 17 orthogonal frequency division multiplexed OFDM symbols.
The device according to any one of claims 21-30, wherein the data packet comprises:

Data other than PBCH and PSCH, or data other than PSCH.
The apparatus according to any one of claims 21 to 31, wherein the data packet is: a data packet carrying a physical downlink control channel PDCCH; and/or a data packet carrying a physical downlink shared channel PDSCH.
A device for resource allocation, comprising:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: according to the number of data packets that need to be sent to the user equipment in a scheduling period, from the schedulable time-frequency resource of the scheduling period Determining a resource carrying the data packet, the user equipment has a coverage level, and the resource corresponds to the coverage level; and determining, according to the coverage level corresponding to the resource, each resource unit RU that constitutes the resource Pilot sequence

The schedulable time-frequency resource of the scheduling period is composed of at least one RU, and the RU is composed of at least one resource element RE, where the RU includes one time slot in the time domain, and includes at least one in the frequency domain. Activating a time-frequency resource of a subcarrier, the time slot being composed of at least one symbol, the RU comprising an RE for carrying the pilot sequence and an RE for carrying the data packet, the RE being in a time domain A symbol is included above, and a time-frequency resource of an activated subcarrier is included in the frequency domain.
A device for indicating a resource type, comprising:

a determining unit, configured to determine a pilot sequence that is carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs, where the pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, The schedulable periodic time-frequency resource type includes a third resource and a fourth resource, where the third resource is used to carry a physical downlink control channel PDCCH, and the fourth resource is used to carry a physical downlink shared channel PDSCH;

And a sending unit, configured to send the pilot sequence to the user equipment.
The device of claim 34, wherein

The RU includes one time slot in the time domain and at least one active subcarrier in the frequency domain Time-frequency resource, the time slot includes at least one symbol, and the RU includes at least one resource element RE.
The apparatus according to claim 35, wherein 15 REs constitute a group of time-frequency resource groups for carrying pilot sequences;

One of the pilot sequences is carried in the RU, and the one pilot sequence is carried by the set of time-frequency resource groups for carrying pilot sequences or by at least one group for carrying pilot sequences. The frequency resource group bears jointly; or

At least one of the pilot sequences is carried in the RU, and each pilot sequence in the at least one pilot sequence is carried by a group of time-frequency resource groups for carrying pilot sequences or by at least one group Cooperating with a time-frequency resource group carrying a pilot sequence; or

The pilot sequence is jointly carried by at least one time-frequency resource group for carrying a pilot sequence in the RU, and each RU of the at least one RU includes at least one group of time-frequency resources for carrying a pilot sequence. group.
The apparatus according to any one of claims 34 to 36, wherein the pilot sequence indicates the type of the schedulable periodic time-frequency resource, including:

The pilot sequence indicates a type of the schedulable periodic time-frequency resource; or

a combination of at least two of the pilot sequences indicating a type of the schedulable periodic time-frequency resource; or

The pilot sequence indicates a size of the schedulable periodic time-frequency resource, and different types of schedulable time-frequency resources have different sizes.
The apparatus according to any one of claims 34 to 37, wherein said pilot sequence is a sequence having an integer multiple of 15;

The sequence whose length is an integer multiple of 15 is generated by a ZC sequence, or

The sequence whose length is an integer multiple of 15 is generated by the m sequence, or

The sequence whose length is an integer multiple of 15 is generated by the Gold sequence.
A device for indicating a resource type, comprising:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: determining a pilot sequence carried by the resource unit RU, where the schedulable time-frequency resource of the scheduling period is composed of at least one of the RUs The pilot sequence is used to indicate the type of the schedulable periodic time-frequency resource, the type of the schedulable periodic time-frequency resource includes a third resource and a fourth resource, and the third resource is used to carry the physical downlink control channel. a PDCCH, where the fourth resource is used to carry a physical downlink shared channel PDSCH;

And a transmitter, connected to the processor by the bus, to perform: sending the pilot sequence to the user equipment.
A device for identifying a resource type, comprising:

a coverage level determining unit, configured to determine a coverage level of the user equipment UE;

And an obtaining unit, configured to obtain, according to the at least one pilot sequence stored by the UE, a pilot sequence of a schedulable resource bearer of a scheduling period;

And a resource determining unit, configured to determine, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.
The apparatus according to claim 40, wherein said obtaining unit is configured to:

And determining, in the at least one pilot sequence that is stored by the UE, a sequence that has the highest correlation with a pilot sequence of the RU bearer included in the schedulable resource of the scheduling period, and is determined as a pilot that is scheduled by the scheduling period schedulable resource sequence.
A device for identifying a resource type, comprising:

a memory for storing program code;

a processor, connected to the memory by a bus, for reading the program code, to perform: determining a coverage level of the UE; obtaining, according to the at least one pilot sequence stored by the UE, a schedulable resource bearer of a scheduling period a pilot sequence; determining, according to the type of the schedulable periodic time-frequency resource indicated by the pilot sequence, a resource corresponding to the coverage level.
An apparatus for receiving a data packet, comprising:

a coverage level determining unit, configured to determine a coverage level of the user equipment UE;

a resource determining unit, configured to determine, according to a coverage level of the UE, a resource corresponding to the coverage level source;

And a data packet receiving unit, configured to receive, according to a predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, a data packet of the UE, where a location of the predetermined CBRU corresponds to a device identifier of the UE.
An apparatus for receiving a data packet, comprising:

a memory for storing program code;

a processor coupled to the memory via a bus for reading the program code to perform:

Determining a coverage level of the user equipment UE; determining, according to the coverage level of the UE, a resource corresponding to the coverage level;

a receiver coupled to the processor via the bus to perform:

And receiving, by the predetermined code block resource unit CBRU location in the resource corresponding to the coverage level, a data packet of the UE, where a location of the predetermined CBRU corresponds to a device identifier of the UE.