WO2017067236A1 - Scheduling method supporting nonstandard bandwidth, and base station - Google Patents

Abstract

Disclosed are a scheduling method supporting a nonstandard bandwidth, and a base station. The method comprises: a base station configures a first system bandwidth and a second system bandwidth, and delivers the second system bandwidth to a terminal by means of broadcast information, an expanded bandwidth being acquired by subtracting the second system bandwidth from the first system bandwidth; when the terminal accesses a cell at the second system bandwidth, receive indication information that is sent by the terminal and that is used for indicating whether the terminal supports a nonstandard bandwidth; and when it is determined, according to the indication information, that the terminal supports the nonstandard bandwidth, deliver a cross-carrier scheduling identifier to the terminal supporting the nonstandard bandwidth, the cross-carrier scheduling identifier being used for indicating that the terminal is scheduled on the expanded bandwidth and/or the second system bandwidth.

Description

Scheduling method and base station supporting non-standard bandwidth Technical field

The present application relates to, but is not limited to, wireless communication technologies, and in particular, to a scheduling method and a base station that support non-standard bandwidth.

Background technique

Defined in the standard of some of the network structure in a specific standard bandwidth as the third Generation Partnership Project ^{(3GPP, 3 rd Generation Partnership Project} ) Long Term Evolution (LTE, Long Term Evolution) standard defines a 1.4MHz, 3MHz, 5MHz Six standard cell bandwidths of 10MHz, 15MHz and 20MHz.

In actual applications, the bandwidth owned by the operator may not be the standard bandwidth. In order to be able to use the LTE network, operators have to use a standard bandwidth that is smaller than the bandwidth they have. For example, an operator has a bandwidth of 12 MHz. Finally, the operator can only use the standard bandwidth of 10 MHz, and the remaining 2 MHz bandwidth causes waste of spectrum resources.

The related technology has two solutions to solve the problem that the spectrum resources cannot be effectively utilized when the operator has non-standard bandwidth:

Solution 1: Split the non-standard bandwidth into a combination of standard bandwidths, and then aggregate the two standard bandwidths by carrier aggregation. This approach has the limitation that the non-standard bandwidth owned by the operator may not be exactly divided into several standard bandwidth combinations. As mentioned above, an operator has a 12MHz air interface bandwidth. In order to make full use of spectrum resources, it can only be divided into a combination of 10MHz and 1.4MHz standard bandwidth. There will still be some waste of spectrum resources and not all bandwidth combinations can be carrier aggregation. At the same time, it may be necessary to add hardware devices, resulting in increased costs.

Solution 2: In order to reduce and avoid the interference of adjacent frequencies, a fixed bandwidth is reserved for both ends of each standard bandwidth in the LTE protocol, and no useful data is transmitted. In order to make full use of the non-standard bandwidth that is owned, the standard bandwidth can be strictly filtered so that the protection bandwidth of the standard bandwidth reservation is smaller than the standard protection bandwidth. For example, if an operator has a non-standard bandwidth of 19.2 MHz, the standard protection bandwidth of 20 MHz bandwidth is 1 MHz, and the middle 18 MHz is used to transmit useful data. After strict filtering, the protection bandwidth at both ends of the 18MHz bandwidth is less than 1MHz, and the filtered protection bandwidth is 0.6MHz, so that the non-standard bandwidth of 19.2MHz can be used. This solution is only applicable to scenarios where the non-standard bandwidth is slightly smaller than the standard bandwidth, and cannot meet the requirements of diverse non-standard bandwidth.

The above two solutions for solving the waste of spectrum resources have certain limitations and cannot meet the requirements of diverse non-standard bandwidth.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

Embodiments of the present invention provide a scheduling method and a base station that support non-standard bandwidth.

The scheduling method supporting the non-standard bandwidth provided by the embodiment of the present invention is applied to a base station, and the method includes:

Configuring a first system bandwidth and a second system bandwidth;

Transmitting, by the broadcast information, the second system bandwidth to the terminal, where the first system bandwidth minus the second system bandwidth is an extended bandwidth;

When the terminal accesses the cell in the second system bandwidth, receiving, by the terminal, indication information used to indicate whether the terminal supports non-standard bandwidth;

When the terminal is configured to support the non-standard bandwidth according to the indication information, the cross-carrier scheduling identifier is sent to the terminal that supports the non-standard bandwidth, where the cross-carrier scheduling identifier is used to indicate the terminal in the extended bandwidth and/or the Scheduling on the second system bandwidth.

In the embodiment of the present invention, the method further includes:

For a terminal supporting a non-standard bandwidth, a physical resource block (PRB) is allocated to the terminal at the extended bandwidth or the second system bandwidth, and the PRB of the extended bandwidth or the second system bandwidth is used. When the terminal needs are not met, the medium access control control unit (MAC CE) is sent to the terminal to notify the terminal that the extended bandwidth and the second system bandwidth are simultaneously The terminal allocates a PRB.

In the embodiment of the present invention, the method further includes: when the extended bandwidth or the second system bandwidth is separately scheduled, delivered in a Transmission Time Interval (TTI) One PDCCH schedules resources of the extended bandwidth or the second system bandwidth;

When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth, and the DCI format in the PDCCH supports cross-carrier. Scheduling, the DCI distinguishes between the PDCCH of the extended bandwidth resource scheduling and the PDCCH of the second system bandwidth resource scheduling by the added CIF identifier bit.

In the embodiment of the present invention, the method further includes:

And when the resource of the extended bandwidth and the second system bandwidth is scheduled, according to the extended bandwidth and the PRB utilization rate of the second system bandwidth and the requirement of the terminal for the PRB, when the extended bandwidth or the When the PRB of the second system bandwidth can meet the requirements of the terminal, the MAC CE is sent to the terminal to notify the terminal to allocate the PRB to the terminal only in the extended bandwidth or the second system bandwidth.

In the embodiment of the present invention, the step of configuring the first system bandwidth and the second system bandwidth further includes: configuring the extended bandwidth and the location identifier of the second system bandwidth, where the location identifier represents the location Presetting a positional relationship between the extended bandwidth and the second system bandwidth.

In the embodiment of the present invention, the sending, by the broadcast information, the bandwidth of the second system to the terminal includes:

Sending a downlink second system bandwidth in a Master Information Block (MIB);

The uplink second system bandwidth is delivered in the system information block 2 (SIB2, System Information Block 2);

The downlink second system bandwidth and the uplink second system bandwidth are the same when the uplink second system bandwidth is absent in the SIB2.

In the embodiment of the present invention, the method further includes:

For the terminal that supports the non-standard bandwidth, the following information is sent in the reconfiguration message: the first system bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that The terminal calculates the extended bandwidth and its location.

In the embodiment of the present invention, the method further includes:

For a terminal supporting non-standard bandwidth, according to the second system bandwidth and the first system band The wide calculation results in the extended bandwidth;

Distributing the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and position.

In the embodiment of the present invention, the method further includes:

Distributing the following information in the broadcast information SIB2: the first system bandwidth, and the location identifier of the extended bandwidth and the second system bandwidth, so that the terminal calculates the extended bandwidth and its location;

For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

In the embodiment of the present invention, the method further includes:

Calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth;

Distributing the following information in the broadcast information SIB2: an extended bandwidth, and a location identifier of the extended bandwidth and the second system bandwidth, so that the terminal obtains the extended bandwidth and its location;

For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

In the embodiment of the present invention, the method further includes:

Determining whether the extended bandwidth meets the requirement of the terminal, and when satisfied, assigning a PRB to the terminal in the extended bandwidth;

When the extended bandwidth does not meet the requirements of the terminal, determine whether the bandwidth of the second system meets the requirement of the terminal, and if yes, allocate a PRB to the terminal in the bandwidth of the second system;

When the second system bandwidth does not meet the terminal requirement, the PRB is allocated to the terminal at the extended bandwidth and the second system bandwidth.

The base station provided by the embodiment of the present invention includes:

a configuration unit, configured to: configure a first system bandwidth and a second system bandwidth, where the first system bandwidth minus the second system bandwidth is an extended bandwidth;

a sending unit, configured to: send the bandwidth of the second system to the terminal by using broadcast information;

a receiving unit, configured to: when the terminal accesses the cell in the second system bandwidth, receive, by the terminal, indication information used to indicate whether the terminal supports non-standard bandwidth;

The sending unit is further configured to: when determining that the terminal supports the non-standard bandwidth according to the indication information, sending a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, where the cross-carrier scheduling identifier is used to indicate the terminal Scheduling over the extended bandwidth and/or the second system bandwidth.

In the embodiment of the present invention, the base station further includes:

An allocating unit, configured to allocate a PRB to the terminal in the extended bandwidth or the second system bandwidth for a terminal supporting a non-standard bandwidth, where the PRB of the extended bandwidth or the second system bandwidth cannot satisfy The MAC CE is sent to the terminal to notify the terminal to allocate a PRB to the terminal at the extended bandwidth and the second system bandwidth.

In the embodiment of the present invention, the sending unit is further configured to: when the extended bandwidth or the second system bandwidth is separately scheduled, send a PDCCH to the extended bandwidth or the second system bandwidth in one TTI. The resource is scheduled. When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth, and the DCI in the PDCCH The format supports cross-carrier scheduling, and the DCI distinguishes between the PDCCH of the extended bandwidth resource scheduling and the PDCCH of the second system bandwidth resource scheduling by the added CIF identifier bit.

In the embodiment of the present invention, the base station further includes:

The dynamic provisioning unit is configured to: when scheduling the resources of the extended bandwidth and the second system bandwidth simultaneously, according to the extended bandwidth and the second system bandwidth, the PRB utilization rate and the terminal requirements for the PRB are separately When the PRB of the extended bandwidth or the second system bandwidth can meet the requirement of the terminal, the MAC CE is sent to the terminal to notify the terminal that only the extended bandwidth or the second system bandwidth pair is The terminal allocates a PRB.

In the embodiment of the present invention, the configuration unit is further configured to: when configuring the first system bandwidth and the second system bandwidth, further configuring the extended bandwidth and the location identifier of the second system bandwidth, where the location identifier A preset positional relationship of the extended bandwidth and the second system bandwidth is characterized.

In the embodiment of the present invention, the sending unit is further configured to: send a downlink second system bandwidth in the MIB; and send an uplink second system bandwidth in the SIB2; wherein, when the SIB2 does not have the uplink In the case of the second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.

In the embodiment of the present invention, the sending unit is further configured to: end to support non-standard bandwidth And sending, in the reconfiguration message, the following information: the first system bandwidth, the extended bandwidth, and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the location Describe the extended bandwidth and its location.

In the embodiment of the present invention, the base station further includes:

a computing unit, configured to: calculate, for the terminal supporting the non-standard bandwidth, the extended bandwidth according to the second system bandwidth and the first system bandwidth;

The sending unit is further configured to: send the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that The terminal obtains the extended bandwidth and its location.

In the embodiment of the present invention, the sending unit is further configured to: send the following information in the broadcast information SIB2: the first system bandwidth, and the extended bandwidth and the location identifier of the second system bandwidth, And causing the terminal to calculate the extended bandwidth and its location; and for the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

In the embodiment of the present invention, the base station further includes:

a calculating unit, configured to: calculate the extended bandwidth according to the second system bandwidth and the first system bandwidth;

The sending unit is further configured to: send the following information in the broadcast information SIB2: an extended bandwidth, and a location identifier of the extended bandwidth and the second system bandwidth, so that the terminal obtains the extended bandwidth and The location of the cross-carrier scheduling identifier is sent in the reconfiguration message for the terminal that supports the non-standard bandwidth.

In the embodiment of the present invention, the base station further includes:

The first determining unit is configured to: determine whether the extended bandwidth meets the requirement of the terminal, and if yes, allocate a PRB to the terminal in the extended bandwidth;

The second judging unit is configured to: determine whether the bandwidth of the second system satisfies the requirement of the terminal when the extended bandwidth does not meet the requirement of the terminal, and if yes, allocate a PRB to the terminal in the second system bandwidth And when the second system bandwidth does not meet the terminal requirement, the PRB is allocated to the terminal in the extended bandwidth and the second system bandwidth.

Embodiments of the present invention provide a computer readable storage medium storing computer executable instructions. The above method is implemented when the computer executable instructions are executed by a processor.

In the technical solution of the embodiment of the present invention, the base station configures two system bandwidths, and the actual bandwidth owned by the operator is referred to as the first system bandwidth, and the standard bandwidth smaller than the first system bandwidth is referred to as the second system bandwidth, and the first system bandwidth is subtracted. The second system bandwidth is called the extended bandwidth. The base station sends the bandwidth of the second system to the terminal by using broadcast information. The terminal searches for broadcast information. When the terminal accesses the cell, if the terminal supports non-standard bandwidth, the terminal sends the terminal to support non-standard bandwidth. If the non-standard bandwidth is not sent, the base station considers that the terminal only supports standard bandwidth; for supporting non-standard bandwidth The terminal sends a cross-carrier scheduling identifier to the base station, and the terminal can use the physical downlink control channel (PDCCH, Physic Downlink Control Channel) in the second system bandwidth to schedule the PRB on the second system bandwidth and/or the extended bandwidth; For a non-standard bandwidth terminal, the base station first allocates a PRB to the terminal in the extended bandwidth or the second system bandwidth. If the PRB of the extended bandwidth or the second system bandwidth cannot meet the terminal requirement, the base station sends a MAC CE to notify the terminal. The base station performs PRB allocation on the terminal simultaneously with the extended bandwidth and the second system bandwidth; after the base station performs PRB allocation on the extended bandwidth and the second system bandwidth, the base station dynamically dynamically allocates the PRB and the bandwidth remaining according to the terminal needs. The case of the PRB, notifying the terminal only in the extended bandwidth or the second system It is distributed on the PRB. Based on this, the terminal and the base station supporting the non-standard bandwidth can perform data transmission on the second system bandwidth and the extended bandwidth; and the terminal that does not support the non-standard bandwidth can perform communication and data transmission with the base station in the second system bandwidth normal. Therefore, the base station in the embodiment of the present invention can enable the terminal supporting the standard bandwidth to work normally without any modification, thereby ensuring system compatibility. For a terminal supporting non-standard bandwidth, it can use more air interface resource blocks of the base station, which can improve data throughput and improve spectrum utilization. It enables operators to make full use of the non-standard bandwidth they have and improve their spectrum resource utilization.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a scheduling method for supporting a non-standard bandwidth according to an embodiment of the present invention;

2 is a schematic structural diagram of a base station according to an embodiment of the present invention;

3 is a schematic diagram showing the structure of a PRB in LTE;

4 is a schematic diagram of relationship between extended bandwidth and standard bandwidth according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of scheduling of a non-standard bandwidth according to an embodiment of the present invention.

Embodiments of the invention

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

FIG. 1 is a schematic flowchart of a method for supporting a non-standard bandwidth according to an embodiment of the present invention. The scheduling method for supporting a non-standard bandwidth is applied to a base station. As shown in FIG. 1 , the scheduling method for supporting a non-standard bandwidth includes The following steps:

Step 101: Configure a first system bandwidth and a second system bandwidth, and send the second system bandwidth to the terminal by using broadcast information, where the first system bandwidth minus the second system bandwidth is an extended bandwidth.

In the embodiment of the present invention, when the first system bandwidth and the second system bandwidth are configured, the extended bandwidth and the location identifier of the second system bandwidth are further configured, where the location identifier characterizes the extended bandwidth and the The preset positional relationship of the second system bandwidth.

In the embodiment of the present invention, the sending, by the broadcast information, the bandwidth of the second system to the terminal includes:

Sending a downlink second system bandwidth in the MIB;

The uplink second system bandwidth is delivered in the SIB2;

The downlink second system bandwidth and the uplink second system bandwidth are the same when the uplink second system bandwidth is absent in the SIB2.

Step 102: When the terminal accesses the cell in the second system bandwidth, the terminal receives the indication information sent by the terminal to indicate whether the terminal supports the non-standard bandwidth.

In the embodiment of the present invention, for a terminal supporting a non-standard bandwidth, a PRB is allocated to the terminal in the extended bandwidth or the second system bandwidth, and the PRB of the extended bandwidth or the second system bandwidth cannot be satisfied. When the terminal needs the terminal, the MAC CE is sent to the terminal to notify the terminal. At the same time, the terminal is allocated a PRB at the extended bandwidth and the second system bandwidth.

In the embodiment of the present invention, when the extended bandwidth or the second system bandwidth is separately scheduled, one PDCCH is sent in one TTI to schedule resources of the extended bandwidth or the second system bandwidth;

When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth, and the DCI format used at this time is to support cross-carrier. The scheduled DCI format, that is, the CIF flag bit of the 3-bit is added in front of the DCI, and the PDCCH for the extended bandwidth resource scheduling and the PDCCH for the second system bandwidth resource scheduling are distinguished by the CFI flag.

In the embodiment of the present invention, determining whether the extended bandwidth meets the requirement of the terminal, and when satisfied, assigning a PRB to the terminal in the extended bandwidth;

When the extended bandwidth does not meet the requirements of the terminal, determine whether the bandwidth of the second system meets the requirement of the terminal, and if yes, allocate a PRB to the terminal in the bandwidth of the second system;

When the second system bandwidth does not meet the terminal requirement, the PRB is allocated to the terminal at the extended bandwidth and the second system bandwidth.

Step 103: When determining that the terminal supports the non-standard bandwidth according to the indication information, sending a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, where the cross-carrier scheduling identifier is used to indicate that the terminal is in the extended bandwidth and/or Or scheduling on the second system bandwidth.

In the embodiment of the present invention, the terminal that supports the non-standard bandwidth delivers at least the following information in the reconfiguration message: the first system bandwidth, the extended bandwidth, and the location identifier of the second system bandwidth, the cross The carrier scheduling identifier is such that the terminal calculates the extended bandwidth and its location.

In the embodiment of the present invention, the terminal that supports the non-standard bandwidth calculates the extended bandwidth according to the second system bandwidth and the first system bandwidth.

Transmitting at least the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth, and the location identifier of the second system bandwidth, the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and position.

In the embodiment of the present invention, at least the following information is sent in the broadcast information SIB2: the first system bandwidth, and the location identifier of the extended bandwidth and the second system bandwidth, so that the terminal Calculating the extended bandwidth and its location;

For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

In the embodiment of the present invention, the extended bandwidth is calculated according to the second system bandwidth and the first system bandwidth;

Transmitting at least the following information in the broadcast information SIB2: an extended bandwidth, and a location identifier of the extended bandwidth and the second system bandwidth, so that the terminal obtains the extended bandwidth and its location;

For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

In the embodiment of the present invention, when the resources of the extended bandwidth and the second system bandwidth are simultaneously scheduled, according to the extended bandwidth and the PRB utilization rate of the second system bandwidth and the requirement of the terminal for the PRB, when used separately When the PRB of the extended bandwidth or the second system bandwidth can satisfy the requirement of the terminal, the MAC CE is sent to the terminal to notify the terminal that the extended bandwidth or the second system bandwidth is only The terminal allocates a PRB.

2 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 2, the base station includes:

The configuration unit 21 is configured to: configure a first system bandwidth and a second system bandwidth, where the first system bandwidth minus the second system bandwidth is an extended bandwidth;

The sending unit 22 is configured to: send the bandwidth of the second system to the terminal by using broadcast information;

The receiving unit 23 is configured to: when the terminal accesses the cell in the second system bandwidth, receive, by the terminal, indication information used to indicate whether the terminal supports non-standard bandwidth;

The sending unit 22 is further configured to: when determining that the terminal supports the non-standard bandwidth according to the indication information, sending a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, where the cross-carrier scheduling identifier is used to indicate The terminal schedules on the extended bandwidth and/or the second system bandwidth.

The base station may further include:

The allocating unit 24 is configured to: for a terminal supporting a non-standard bandwidth, allocate a PRB to the terminal in the extended bandwidth or the second system bandwidth, when the PRB of the extended bandwidth or the second system bandwidth cannot be satisfied When the terminal requests, the MAC CE is sent to the terminal to notify the terminal to allocate a PRB to the terminal in the extended bandwidth and the second system bandwidth.

The sending unit 22 is further configured to: when the extended bandwidth or the second system bandwidth is separately scheduled, send a PDCCH in one TTI to schedule resources of the extended bandwidth or the second system bandwidth; When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth, and the DCI format used at this time is to support cross-carrier scheduling. The DCI format, that is, the CIF flag bit of the 3 bit is added in front of the DCI, and the PDCCH for the extended bandwidth resource scheduling and the PDCCH for the second system bandwidth resource scheduling are distinguished by the CFI flag.

The base station may further include:

The dynamic provisioning unit 25 is configured to: when scheduling the resources of the extended bandwidth and the second system bandwidth simultaneously, according to the PRB utilization rate of each system bandwidth and the requirement of the terminal for the PRB, when the extended bandwidth is used separately When the PRB of the second system bandwidth can meet the requirement of the terminal, the MAC CE is sent to the terminal to notify the terminal to allocate the PRB to the terminal only in the extended bandwidth or the second system bandwidth. .

The configuration unit 21 is further configured to: when configuring the first system bandwidth and the second system bandwidth, further configuring the extended bandwidth and the location identifier of the second system bandwidth, where the location identifier represents the extension A preset positional relationship between the bandwidth and the bandwidth of the second system.

The sending unit 22 is further configured to: send a downlink second system bandwidth in the MIB; and send an uplink second system bandwidth in the SIB2; where, when the SIB2 does not have the uplink second system bandwidth, The downlink second system bandwidth is the same as the uplink second system bandwidth.

The sending unit 22 is further configured to: send, in the reconfiguration message, at least the following information to the terminal that supports the non-standard bandwidth: the first system bandwidth, the extended bandwidth, and the location of the second system bandwidth And identifying the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and its location.

The base station may further include:

The calculating unit 26 is configured to: calculate, for the terminal supporting the non-standard bandwidth, the extended bandwidth according to the second system bandwidth and the first system bandwidth;

The sending unit 22 is further configured to: send at least the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier tone The degree is identified such that the terminal obtains the extended bandwidth and its location.

The sending unit 22 is further configured to: send at least the following information in the broadcast information SIB2: the first system bandwidth, and the location identifier of the extended bandwidth and the second system bandwidth, so that the terminal The extended bandwidth and the location thereof are calculated. For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

The calculating unit 26 is configured to: calculate the extended bandwidth according to the second system bandwidth and the first system bandwidth;

The sending unit 22 is further configured to: send at least the following information in the broadcast information SIB2: an extended bandwidth, and a location identifier of the extended bandwidth and the second system bandwidth, so that the terminal obtains the extension The bandwidth and its location; for the terminal supporting the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message.

The base station may further include:

The first determining unit 27 is configured to: determine whether the extended bandwidth meets the terminal requirement, and if yes, allocate a PRB to the terminal in the extended bandwidth;

The second determining unit 28 is configured to: determine, when the extended bandwidth does not meet the requirement of the terminal, whether the bandwidth of the second system meets the requirement of the terminal, and if yes, allocate the bandwidth to the terminal in the second system bandwidth PRB; when the second system bandwidth does not meet the terminal requirement, the PRB is allocated to the terminal at the extended bandwidth and the second system bandwidth.

It should be understood by those skilled in the art that the functions implemented by each of the above-mentioned base stations in the embodiments of the present invention can be understood by referring to the foregoing description of the scheduling method supporting non-standard bandwidth.

A scheduling method supporting non-standard bandwidth according to an embodiment of the present invention will be described below with reference to the embodiments.

Embodiment 1

The embodiment of the invention configures the extended bandwidth by reconfiguring the message.

The LTE standard bandwidth defined in the 3GPP protocol is: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz, and the corresponding maximum available resource blocks are 6, 15, 25, 50, 75, and 100, respectively. It is represented by n6, n15, n25, n50, n75, and n100, where the digital part represents the maximum available PRB corresponding to the bandwidth. Referring to FIG. 3, FIG. 3 is in LTE. A schematic diagram of the PRB, a PRB consists of 12 subcarriers in the vertical direction and 7 orthogonal frequency division multiplexing (OFDM) symbols in the horizontal direction.

For the case of non-standard bandwidth, it can be represented by n*, where * represents the number of PRBs of non-standard bandwidth. Therefore, the value range of * is any value other than 6, 15, 25, 50, 75, and 100 in the interval [7, 200], that is, the value range can also be expressed as [7, 14], [16, 24], [26, 74], [76, 99] and [101, 200]. When deploying LTE, one of these standard system bandwidths is typically employed and signals are transmitted within the corresponding bandwidth.

In the embodiment of the present invention, the non-standard bandwidth owned by the operator is referred to as the first system bandwidth, and the standard bandwidth smaller than the first system bandwidth is referred to as the second system bandwidth. When the first system bandwidth and the second system bandwidth are different, the second system bandwidth may take any standard bandwidth smaller than the first system bandwidth. For example, if the bandwidth of the first system is n80, the bandwidth of the second system may be set to any one of n6, n15, n25, n50, and n75, and the extended bandwidth may be n74, n65, n55, n30, and n5. In the embodiment of the present invention, description is made only with the largest second system bandwidth that is smaller than the bandwidth of the first system.

The first system bandwidth, the second system bandwidth, the extended bandwidth, and the second system bandwidth location identifier are configured in the base station of the embodiment of the present invention. The extended bandwidth may be on the right side of the second system bandwidth, as shown in case A in FIG. 4; the extended bandwidth may also be on the left side of the second system bandwidth, as shown in case B in FIG. 4; the extended bandwidth is also It can be evenly distributed at both ends of the second system bandwidth, as shown in case C in FIG. The base station determines the relationship between the second system bandwidth and the extended bandwidth by sending three parameters of the first system bandwidth or the extended bandwidth, the second system bandwidth, the extended bandwidth, and the second system bandwidth location identifier, where the first system bandwidth and the second system are The bandwidth can be represented by the number of PRBs, and the extended bandwidth and the second system bandwidth location identifier can use two bits of data to represent the three cases of the second system bandwidth and the extended bandwidth location.

The second system bandwidth is sent by the base station in the broadcast mode. The downlink (DL, Downlink) second system bandwidth is sent in the MIB, and the uplink (UL, Uplink) second system bandwidth is sent in the SIB2. If there is no UL in the SIB2. For the second system bandwidth, the DL second system bandwidth is considered to be the same as the UL second system bandwidth. All terminals receive broadcast information on the second system bandwidth and initiate access on the second system bandwidth.

The terminal searches for a cell in the second system bandwidth configured by the base station, receives broadcast information, and initiates an access procedure. A terminal supporting non-standard bandwidth transmits capability to support non-standard bandwidth through UE capability message To the base station. For a terminal that supports a non-standard bandwidth, the base station delivers the parameters in the reconfiguration message: the number of the first system bandwidth resource block, the location identifier of the second system bandwidth and the extended bandwidth, and the indication of supporting cross-carrier scheduling. The terminal can calculate the number of resource blocks and the location of the extended bandwidth according to the second system bandwidth received in the broadcast information, the first system bandwidth received in the message, and the location identifier of the second system bandwidth and the extended bandwidth. The terminal determines whether the base station schedules the second system bandwidth, the extended bandwidth, or the two-part resource scheduling according to the carrier indicator field (CIF) in the Downlink Control Information (DCI) format.

When the base station delivers the first system bandwidth resource block number in the reconfiguration message, the UE calculates the resource block number of the extended bandwidth. Alternatively, the base station may calculate the number of the extended bandwidth resource blocks and send the information to the terminal through the reconfiguration message. The base station sends the extended bandwidth, the second system bandwidth, and the extended bandwidth location identifier in the reconfiguration message. Supports parameters such as cross-carrier scheduling indication.

Embodiment 2

Embodiments of the present invention configure extended bandwidth by broadcasting messages.

The first system bandwidth or the extended bandwidth, the extended bandwidth, and the second system bandwidth location identifier may also be delivered in the system broadcast. The base station sends a broadcast message to the second system bandwidth, the DL second system bandwidth is sent in the MIB, and the UL second system bandwidth is sent in the SIB2. If the SIB2 does not have the UL second system bandwidth, the DL second system bandwidth is considered. Same bandwidth as UL second system. The first system bandwidth resource block number, the second system bandwidth, and the extended bandwidth location identifier of the DL and the UL are sent to the terminal under the SIB2, and the terminal receives the first system bandwidth, the second system bandwidth, the extended bandwidth, and the second system bandwidth. The location identifier is capable of calculating the number and location of resource blocks for the extended bandwidth. The terminal initiates the access on the second system bandwidth, and the terminal that supports the non-standard bandwidth reports the capability of supporting the non-standard bandwidth in the UE capability report message, and the base station sends the cross-carrier scheduling in the reconfiguration message according to whether the UE supports the non-standard bandwidth. It is indicated that the UE determines whether the base station schedules the second system bandwidth, the extended bandwidth, or the two parts of resources according to the CIF in the DCI sent by the base station.

When the base station sends the first system bandwidth in the SIB2 message, the terminal calculates the resource block number of the extended bandwidth according to the first system bandwidth and the second system bandwidth. The base station may also calculate the number of resource blocks of the extended bandwidth, and broadcast the extended bandwidth, the extended bandwidth, and the second system bandwidth location identifier in the SIB2 message.

Embodiment 3

The embodiment of the invention describes the allocation of resources on the bandwidth of the first system.

For a terminal that does not support the non-standard bandwidth, the base station directly allocates a resource block to the terminal in the second system bandwidth, and sends the uplink and downlink scheduling information to the terminal through the PDCCH, and the terminal demodulates the physical downlink shared channel according to the DCI delivered by the PDCCH. The physical uplink shared channel (PDSCH/PUSCH, Physical Downlink Shared Channel/Physical Uplink Shared Channel) implements data transmission.

In order to improve the utilization of resource blocks on the first system bandwidth of the base station without increasing the power consumption of the terminal, the steps for resource allocation for the terminal supporting the non-standard bandwidth are as follows:

The first step is to determine whether the resources of the extended bandwidth can meet the requirements of the terminal. To measure the usage of the extended bandwidth resources, set threshold parameters of the two resource utilization rates for the extended bandwidth: E_Threshold1 and E_Threshold2. E1(T) represents the actual PRB utilization of the extended bandwidth at the current time, and E2(T) represents the estimated PRB utilization of the extended bandwidth after the UE is allocated the PRB.

If E1(T)<E_Threshold 1 and E2(T)<E_Threshold 2

It is considered that the resource utilization of the extended bandwidth is not too high at this time, and the demand of the terminal resource can be satisfied. Then, the terminal allocates resources on the extended bandwidth. Otherwise, if the resource utilization of the extended bandwidth is high, the extended bandwidth is not The terminal allocates resources and goes to the second step.

Step 2: In order to measure the bandwidth usage of the second system, the threshold parameters N_Threshold1 and N_Threshold2 of the two resource utilization are also set. N1(T) represents the actual PRB utilization of the second system bandwidth at the current time, and N2(T) represents the estimated RRB utilization of the second system bandwidth after the UE allocates the PRB.

If N1(T)<N_Threshold 1 and N2(T)<N_Threshold 2

It is considered that the resource utilization of the bandwidth of the second system is not too high at this time, and the requirement for allocating resources for the terminal can be satisfied, and the resource is allocated to the terminal on the bandwidth of the second system, otherwise, the process goes to the third step.

Step 3: Since the resource utilization of the extended bandwidth and the second system bandwidth are relatively high, it is necessary to allocate resource blocks for the terminal simultaneously on the two bandwidths, in order to enable the terminal to simultaneously detect resources in the extended bandwidth and the second system bandwidth. Allocation, the base station sends a MAC CE to notify the terminal and simultaneously expands Bandwidth and second system bandwidth scheduling. The eNB sends two PDCCHs in a TTI using the resources of the second system bandwidth. One PDCCH is the allocation of the bandwidth resources of the second system, and one PDCCH is the allocation of the extended bandwidth resources, and the terminal is blindly detected in one TTI. These two PDCCHs.

Step 4: Since the terminal blindly detects two PDCCHs at the same time, the power consumption of the terminal increases, and in order to reduce the power consumption of the terminal, when the extended bandwidth or the second system bandwidth can meet the terminal requirement, the base station only schedules the extended bandwidth or The resources of the second system bandwidth. In order to measure the resource usage of the terminal in the extended bandwidth and the second system bandwidth, two parameters E_UE_Threshold and N_UE_Threshold are set. N_UE(T) represents the average value of the ratio of the total RBs of the RBs allocated by the UE in the second system bandwidth in the second system bandwidth; E_UE(T) indicates that the RBs allocated by the UE in the extended bandwidth are in the extended bandwidth. The average of the ratio of RBs.

If N_UE(T)<N_UE_Threshold or E_UE(T)<E_UE_Threshold

Then the base station continues to judge the resource usage on the extended bandwidth, if it satisfies:

E1(T)<E_Threshold 1 and E2(T)<E_Threshold 2, the base station sends a MAC CE to notify the terminal to schedule it only on the extended bandwidth, and the terminal demodulates the PDSCH/PUSCH only in the extended bandwidth. Otherwise, the base station continues to determine the bandwidth allocation of the second system bandwidth, if:

N1(T)<N_Threshold 1 and N2(T)<N_Threshold 2

Then, the base station sends the MAC CE to notify the terminal to schedule the second system bandwidth only, and the terminal performs demodulation of the PDSCH/PUSCH only in the second system bandwidth.

If the above conditions are not met, the base station continues to schedule the terminal within the extended bandwidth and the second system bandwidth.

Embodiment 4

Embodiments of the present invention describe scheduling of bandwidth and extended bandwidth resources in the second system.

When the base station performs scheduling on the extended bandwidth and the second system bandwidth, the base station sends two PDCCHs for scheduling. At this time, DCI with 3bit CIF supporting cross-carrier scheduling is used.

Referring to FIG. 5, FIG. 5 is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention. After receiving a PDCCH scheduled for a second system bandwidth resource block, the terminal demodulates downlink data according to a DCI message on a PDSCH of a second system bandwidth or The uplink data is sent on the PUSCH. Demodulate PDSCH root The symbol position is determined according to a control format indicator (CFI, Control Format Indicator) of the cell. If the uplink data is transmitted, the terminal parses the PDCCH and sends the uplink data at the corresponding PUSCH resource location.

After receiving the PDCCH scheduled for the resource block of the extended bandwidth, the terminal demodulates the downlink data on the PDSCH of the extended bandwidth according to the DCI message or transmits the uplink data on the PUSCH. Since the control channel PDCCH is not set for the extended bandwidth, the symbol position of the PDSCH does not depend on the CFI configured by the base station, and all symbols are used to transmit the PDSCH. If the uplink data is transmitted, the terminal parses the PDCCH and sends the uplink data at the corresponding PUSCH resource location.

Referring to FIG. 6, FIG. 6 is a schematic diagram of scheduling of a non-standard bandwidth according to an embodiment of the present invention. When the extended bandwidth and the second system bandwidth resource are used at the same time, the base station sends two PDCCHs, so the base station and the terminal are at the same time. The two hybrid automatic repeat request (HAQR) entities are maintained. For downlink data, the UE feeds back 4 ACK/NACK information at most, and also feeds back 4 ACK/NACK for the uplink data base station.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above-mentioned scheduling method supporting non-standard bandwidth.

The technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

In the several embodiments provided by the present invention, it should be understood that the disclosed method and smart device may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. .

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place. It can also be distributed to multiple network units; the purpose of the solution of this embodiment can be implemented according to actual selection of some or all of the units.

In addition, the functional units in the embodiments of the present invention may all be integrated in one second processing unit, or the units may be separately used as one unit, or two or more units may be integrated into one unit; The unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The foregoing is only an embodiment of the present invention, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It is covered by the scope of protection of this application.

Industrial applicability

The base station in the embodiment of the present invention can enable the terminal supporting the standard bandwidth to work normally without any modification, thereby ensuring system compatibility. For a terminal supporting non-standard bandwidth, it can use more air interface resource blocks of the base station, which can improve data throughput and improve spectrum utilization. It enables operators to make full use of the non-standard bandwidth they have and improve their spectrum resource utilization.

Claims (15)

A scheduling method supporting non-standard bandwidth is applied to a base station, and the method includes: Configuring a first system bandwidth and a second system bandwidth; Transmitting, by the broadcast information, the second system bandwidth to the terminal, where the first system bandwidth minus the second system bandwidth is an extended bandwidth; When the terminal accesses the cell in the second system bandwidth, receiving, by the terminal, indication information used to indicate whether the terminal supports non-standard bandwidth; When the terminal is configured to support the non-standard bandwidth according to the indication information, the cross-carrier scheduling identifier is sent to the terminal that supports the non-standard bandwidth, where the cross-carrier scheduling identifier is used to indicate that the terminal is in the extended bandwidth and/or The second system is scheduled on the bandwidth. The scheduling method for supporting a non-standard bandwidth according to claim 1, further comprising: For a terminal supporting a non-standard bandwidth, the physical resource block PRB is allocated to the terminal in the extended bandwidth or the second system bandwidth, and the PRB of the extended bandwidth or the second system bandwidth cannot meet the terminal requirement. And sending a medium access control unit MAC CE to the terminal to notify the terminal to allocate a PRB to the terminal at the extended bandwidth and the second system bandwidth at the same time. The scheduling method for supporting a non-standard bandwidth according to claim 2, the method further comprising: When the extended bandwidth or the second system bandwidth is separately scheduled, one physical downlink control channel PDCCH is sent to schedule the resources of the extended bandwidth or the second system bandwidth in one transmission time interval TTI; When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth, and the downlink control information DCI format in the PDCCH is configured. Supporting cross-carrier scheduling, the DCI distinguishes between the PDCCH of the extended bandwidth resource scheduling and the PDCCH of the second system bandwidth resource scheduling by the added carrier indication domain CIF identifier bit. The scheduling method for supporting a non-standard bandwidth according to claim 3, the method further comprising: When the extended bandwidth and the second system bandwidth are simultaneously scheduled, according to the extended bandwidth and the PRB utilization rate on the second system bandwidth and the terminal requirements for the PRB, if the extended bandwidth or the first The PRB of the second system bandwidth can meet the requirement of the terminal, and the MAC CE is sent to the terminal to notify the terminal to allocate a PRB to the terminal in the extended bandwidth or the second system bandwidth. The non-standard bandwidth-based scheduling method according to claim 1, wherein the step of configuring the first system bandwidth and the second system bandwidth further comprises: configuring the extended bandwidth and the location of the second system bandwidth And an identifier, wherein the location identifier is used to represent a preset location relationship between the extended bandwidth and the second system bandwidth. The scheduling method for supporting a non-standard bandwidth according to claim 1, wherein the transmitting the bandwidth of the second system to the terminal by using the broadcast information comprises: Sending a downlink second system bandwidth in the main message block MIB; Sending an uplink second system bandwidth in the system message block 2SIB2; The downlink second system bandwidth and the uplink second system bandwidth are the same when the uplink second system bandwidth is absent in the SIB2. The scheduling method for supporting a non-standard bandwidth according to claim 5, the method further comprising: For the terminal that supports the non-standard bandwidth, the following information is sent in the reconfiguration message: the first system bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that The terminal calculates the extended bandwidth and its location. The scheduling method for supporting a non-standard bandwidth according to claim 5, the method further comprising: For the terminal supporting the non-standard bandwidth, the extended bandwidth is calculated according to the second system bandwidth and the first system bandwidth; Distributing the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and position. The non-standard bandwidth scheduling method according to claim 5, wherein the method further includes include: Distributing the following information in the broadcast information SIB2: the first system bandwidth, and the location identifier of the extended bandwidth and the second system bandwidth, so that the terminal calculates the extended bandwidth and its location; For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message. The scheduling method for supporting a non-standard bandwidth according to claim 5, the method further comprising: Calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth; Distributing the following information in the broadcast information SIB2: an extended bandwidth, and a location identifier of the extended bandwidth and the second system bandwidth, so that the terminal determines the extended bandwidth and its location; For the terminal that supports the non-standard bandwidth, the cross-carrier scheduling identifier is sent in the reconfiguration message. The scheduling method for supporting a non-standard bandwidth according to claim 2, the method further comprising: Determining whether the extended bandwidth meets the requirement of the terminal, and when satisfied, assigning a PRB to the terminal in the extended bandwidth; When the extended bandwidth does not meet the requirements of the terminal, determine whether the bandwidth of the second system meets the requirement of the terminal, and if yes, allocate a PRB to the terminal in the bandwidth of the second system; When the second system bandwidth does not meet the terminal requirement, the PRB is allocated to the terminal at the extended bandwidth and the second system bandwidth. A base station, the base station comprising: a configuration unit, configured to: configure a first system bandwidth and a second system bandwidth, where the first system bandwidth minus the second system bandwidth is an extended bandwidth; a sending unit, configured to: send the bandwidth of the second system to the terminal by using broadcast information; a receiving unit, configured to: when the terminal accesses the cell in the second system bandwidth, receive, by the terminal, indication information used to indicate whether the terminal supports non-standard bandwidth; The sending unit is further configured to: when determining that the terminal supports the non-standard bandwidth according to the indication information, sending a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, the cross-carrier scheduling The identification is used to indicate that the terminal is scheduled on the extended bandwidth and/or the second system bandwidth. The base station according to claim 12, the base station further comprising: An allocating unit, configured to allocate a PRB to the terminal in the extended bandwidth or the second system bandwidth for a terminal supporting a non-standard bandwidth, where the PRB of the extended bandwidth or the second system bandwidth cannot satisfy The MAC CE is sent to the terminal to notify the terminal to allocate a PRB to the terminal at the extended bandwidth and the second system bandwidth. The base station according to claim 13, wherein the sending unit is further configured to: when the extended bandwidth or the second system bandwidth is separately scheduled, send a PDCCH to the extended bandwidth or within one TTI The resources of the second system bandwidth are scheduled. When the extended bandwidth and the second system bandwidth are simultaneously scheduled, two PDCCHs are sent in one TTI to respectively schedule the resources of the extended bandwidth and the second system bandwidth. The DCI format in the PDCCH supports cross-carrier scheduling, and the DCI distinguishes the PDCCH of the extended bandwidth resource scheduling and the PDCCH of the second system bandwidth resource scheduling by the added CIF flag. The base station according to claim 14, the base station further comprising: The dynamic provisioning unit is configured to: when scheduling the resources of the extended bandwidth and the second system bandwidth simultaneously, according to the extended bandwidth and the PRB utilization rate of the second system bandwidth and the requirement of the terminal for the PRB, when used separately When the PRB of the extended bandwidth or the second system bandwidth can meet the requirements of the terminal, the MAC CE is sent to the terminal to notify the terminal that the extended bandwidth or the second system bandwidth is only The terminal allocates a PRB.

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