CN108738142B

CN108738142B - Scheduling information transmission method and device

Info

Publication number: CN108738142B
Application number: CN201710265805.2A
Authority: CN
Inventors: 王明月; 谢峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2023-07-14
Anticipated expiration: 2037-04-21
Also published as: WO2018192398A1; CN108738142A

Abstract

The invention discloses a scheduling information transmission method, which comprises the following steps: taking the Least Significant Bit (LSB) of a terminal (UE) Identification (ID) as an identification of wireless resource scheduling; and sending the wireless resource scheduling information to the UE according to the wireless resource scheduling identification. The invention also discloses a scheduling information transmission device.

Description

Scheduling information transmission method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and apparatus for transmitting scheduling information.

Background

With the development of Internet of things applications such as Internet of vehicles, intelligent meter reading, intelligent medical treatment, intelligent home, intelligent wearing and the like, new requirements are put forward for the existing mobile communication technology by the introduction of new technologies. Among other things, demands include more user connections, lower latency, higher reliability, lower power consumption, etc. In the current mobile communication technology, however, the terminal establishes a connection with the network through a random access procedure. The access process has larger time delay and higher power consumption, and can not meet the new requirement of the development of the Internet of things. For this situation, the industry is researching a scheduling-free scheme with the advantages of low delay, low power consumption and the like.

In the scheduling-free scheme, how to determine a downlink scheduling identifier used by a terminal (UE) by a base station is a problem to be solved.

Disclosure of Invention

In order to solve the existing technical problems, the embodiment of the invention provides a scheduling information transmission method and device.

The technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides a scheduling information transmission method, which is applied to a base station and comprises the following steps:

taking the Least Significant Bit (LSB) of the terminal UE identification ID as the identification of the wireless resource scheduling;

and sending the wireless resource scheduling information to the UE according to the wireless resource scheduling identification.

In the above scheme, the Most Significant Bit (MSB) of the UE ID is placed in a control cell (MAC CE) of a Medium Access Control (MAC) layer; the MAC CE is used for the UE to determine whether the received downlink data is the downlink data of the UE.

In the above solution, when sending radio resource scheduling information to the UE, the method further includes:

transmitting the radio resource scheduling information in a paging subframe;

the method further comprises the steps of:

and transmitting downlink data corresponding to the UE in the current paging subframe.

In the above solution, before sending the radio resource scheduling information to the UE, the method further includes:

Carrying a first cell in a paging message, wherein the first cell indicates that the UE has downlink service information;

transmitting the paging message in a paging subframe;

accordingly, when transmitting radio resource scheduling information to the UE, the method includes:

transmitting radio resource scheduling information to the UE within an nth Transmission Time Interval (TTI) to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In the above scheme, the method further comprises:

carrying a field in the first cell, wherein the field indicates a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe; the first interval is N TTIs.

In the above scheme, uplink service data of the UE is received before the radio resource scheduling information is sent to the UE; when sending radio resource scheduling information to the UE, the method includes:

transmitting the radio resource scheduling information in the L-th TTI to the L+M-1-th TTI after the uplink data subframe; the second interval is L TTIs; the second interval represents the interval between the uplink data subframe and the radio resource scheduling information subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

carrying a second cell in the paging message, the second cell indicating the UE second interval;

and transmitting the paging message in a paging subframe.

In the above scheme, the method further comprises:

and carrying a logic channel identification (LC ID) in the MAC sub-header, wherein the LC ID is used for determining whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

The embodiment of the invention also provides a scheduling information transmission method which is applied to the UE, and comprises the following steps:

taking LSB of UE ID as identification of wireless resource scheduling;

and receiving the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier.

In the above scheme, the method further comprises:

and judging the received data as the own data by matching the received MAC CE field with the MSB of the own UE ID.

In the above scheme, when receiving the radio resource scheduling information sent by the base station, the method further includes:

receiving the radio resource scheduling information in a paging subframe;

accordingly, the method further comprises:

and receiving corresponding downlink data in the current paging subframe.

In the above scheme, before receiving the radio resource scheduling information sent by the base station, the method further includes:

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message to obtain a first cell;

determining that the UE has downlink service information by using the first cell;

when receiving the radio resource scheduling information sent by the base station, the method comprises the following steps:

receiving the radio resource scheduling information in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In the above solution, when receiving the paging message, the method further includes:

analyzing the first cell to obtain a carried field, and determining a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe by using the carried field; the first interval is N TTIs.

In the scheme, the uplink service data is sent to the base station before receiving the wireless resource scheduling information sent by the base station; when receiving the radio resource scheduling information sent by the base station, the method comprises the following steps:

receiving radio resource scheduling information from an L-th TTI to an L+M-1-th TTI after an uplink data subframe; the second interval is L TTIs; the second interval represents the interval between the uplink data subframe and the radio resource scheduling information subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message to obtain a second cell;

the second interval is determined using the second cell.

The embodiment of the invention also provides a scheduling information transmission device, which comprises:

a first allocation unit, configured to use LSB of the UE ID as an identifier of radio resource scheduling;

and the sending unit is used for sending the wireless resource scheduling information to the UE according to the wireless resource scheduling identification.

In the above solution, the sending unit is configured to:

transmitting the radio resource scheduling information in a paging subframe; and transmitting downlink data corresponding to the UE in the current paging subframe.

In the above scheme, the device further includes:

a generating unit, configured to carry a first cell in a paging message, where the first cell indicates that the UE has downlink service information;

the sending unit is further configured to send the paging message in a paging subframe; and transmitting radio resource scheduling information to the UE within an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In the above solution, the generating unit is further configured to carry a field in the first cell, where the field indicates a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe; the first interval is N TTIs.

In the above solution, the sending unit is specifically configured to:

uplink service data of the UE is received before the radio resource scheduling information is sent to the UE; when transmitting radio resource scheduling information to the UE, transmitting the radio resource scheduling information in an L-th TTI to an L+M-1-th TTI after an uplink data subframe; the second interval is L TTIs; the second interval represents the interval between the uplink data subframe and the radio resource scheduling information subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In the above scheme, the device further includes:

a generating unit, configured to carry a second cell in the paging message before sending radio resource scheduling information to the UE, where the second cell indicates the UE second interval;

the sending unit is further configured to send the paging message in a paging subframe.

In the above scheme, the device further includes:

and the generating unit is used for carrying an LC ID in the MAC sub-header, wherein the LC ID is used for determining whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

a second allocation unit, configured to use LSB of the UE ID as an identifier of radio resource scheduling;

and the receiving unit is used for receiving the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier.

In the above scheme, the device further includes:

and the determining unit is used for judging the received data to be the own data by matching the received MAC CE field with the MSB of the own UE ID.

In the above solution, the receiving unit is configured to:

receiving the radio resource scheduling information in a paging subframe; and receiving corresponding downlink data in the current paging subframe.

In the above scheme, the receiving unit is further configured to receive a paging message sent by the base station in a paging subframe; and receiving the radio resource scheduling information in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1;

the apparatus further comprises: a determining unit, configured to parse the paging message to obtain a first cell; and determining that the UE has downlink service information by using the first cell.

In the above aspect, the determining unit is further configured to:

analyzing the first cell to obtain a carried field; determining a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe by utilizing the carried field; the first interval is N TTIs.

In the scheme, the uplink service data is sent to the base station before receiving the wireless resource scheduling information sent by the base station;

a receiving unit, configured to receive radio resource scheduling information from an L-th TTI to an l+m-1-th TTI after an uplink data subframe; the second interval is L TTIs; the second interval represents the interval between the uplink data subframe and the radio resource scheduling information subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In the above scheme, the receiving unit is further configured to receive, in a paging subframe, a paging message sent by the base station before receiving radio resource scheduling information sent by the base station;

the apparatus further comprises:

a determining unit, configured to parse the paging message to obtain a second cell; and determining the second interval using the second cell.

According to the scheduling information transmission method and device provided by the embodiment of the invention, the base station takes the LSB of the UE ID as the identifier of the wireless resource scheduling; transmitting radio resource scheduling information to the UE according to the radio resource scheduling identifier; and for the UE, taking the LSB of the UE ID as an identifier of the wireless resource scheduling, and receiving wireless resource scheduling information sent by the base station according to the identifier of the wireless resource scheduling. By the method, the UE can acquire the unique scheduling information identifier under the condition of no random access flow, and receive the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier, so that the corresponding downlink service information can be received subsequently.

In addition, the MSB of the UE ID is placed in a MAC CE of a MAC layer; the MAC CE is configured to determine, by using the UE, whether the received downlink data is downlink data of the UE, and for the UE, determine that the received data is own data by matching the received MAC CE field with the MSB of the UE ID of the UE, so as to receive the corresponding downlink service, so that collision between different UEs can be avoided.

Drawings

In the drawings (which are not necessarily drawn to scale), like numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example and not by way of limitation, various embodiments discussed herein.

Fig. 1 is a flow chart of a method for transmitting scheduling information on a base station side according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a downlink MAC PDU structure according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a MAC CE format according to an embodiment of the present invention;

fig. 4 is a flowchart of a scheduling information transmission method at a UE side according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a process of directly scheduling downlink data at paging subframe time by a second base station according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of a process of scheduling downlink data in N TTIs after a paging subframe according to a third embodiment of the present invention;

fig. 7 is a schematic diagram of a process of scheduling downlink data in N TTIs after a paging subframe according to a fourth embodiment of the present invention;

fig. 8 is a schematic diagram of a downlink traffic scheduling process triggered by a fifth uplink traffic in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a scheduling information transmission apparatus according to a sixth embodiment of the present invention;

fig. 10 is a schematic structural diagram of another scheduling information transmitting apparatus according to the sixth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Currently, in a conventional dynamic scheduling manner, a terminal establishes a connection with a base station by initiating a random access procedure. The base station negotiates with the UE and determines a unique Cell radio network temporary identifier (C-RNTI, cell-Radio NetworkT emporary Identifier) in the flow, namely, determines the identifier of radio resource scheduling, and sends radio resource scheduling information to the UE according to the identifier of the radio resource scheduling. However, in the scheduling-free manner, the UE does not initiate a random access procedure, and at this time, how to obtain the unique C-RNTI does not yet provide a corresponding technical solution in the prior art.

Based on this, in various embodiments of the invention: the base station takes the LSB of the UE ID as the identifier of the wireless resource scheduling; transmitting radio resource scheduling information to the UE according to the radio resource scheduling identifier; and for the UE, taking the LSB of the UE ID as an identifier of the wireless resource scheduling, and receiving wireless resource scheduling information sent by the base station according to the identifier of the wireless resource scheduling. By the method, the UE can acquire the unique scheduling information identifier under the condition of no random access flow, and receive the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier, so that the corresponding downlink service information can be received subsequently.

In addition, the MSB of the UE ID is placed in a MAC CE of a MAC layer; the MAC CE is used for determining whether the received downlink data is the downlink data of the UE or not by the UE, and judging that the received data is the data of the UE by matching the received MAC CE field with the MSB of the UE ID of the UE, so that the corresponding downlink service is received, and the collision among different UEs can be avoided.

Example 1

The scheduling information transmission method of the present embodiment is applied to a base station, as shown in fig. 1, and includes the following steps:

Step 101: the base station takes the LSB of the UE ID as the identifier of the wireless resource scheduling;

in other words, the UE is assigned an identity of the radio resource schedule, which is the LSB of the UE ID of the UE.

Here, in actual application, the MSB of the UE ID may be placed in the MAC CE of the MAC layer; the MAC CE is used for the UE to determine whether the received downlink data is the downlink data of the UE.

Wherein the number of bits of the UE ID is the sum of the number of bits of LSB and MSB. The current protocol specifies a UE ID length of 40 bits, and when the LSB is 16 bits, the MSB is 24 bits.

Of course, in practical application, with the development of technology, the number of bits of LSB can be changed, and correspondingly, the number of bits of MSB and UE ID can be changed.

The identifier of the radio resource scheduling is used to distinguish between different UEs, that is, to distinguish which UE the base station issues the radio resource scheduling information. In an embodiment, the length of the identifier of the radio resource scheduling may be 16 bits, that is, the value range is 0-65535. The reason for setting the length of the flag of the radio resource schedule in this way is that: considering that the number of access UEs generally does not exceed 65536 in one cell at present, in the subsequent development process, when the number of access UEs exceeds 65536, the length of the identifier of the radio resource scheduling can be further expanded at this time.

In practical application, the identifier of the radio resource scheduling may be a C-RNTI.

Step 102: and sending the wireless resource scheduling information to the UE according to the wireless resource scheduling identification.

Specifically, scrambling the radio resource scheduling information with an identification of the allocated radio resource schedule;

and sending the scrambled wireless resource scheduling information to the UE.

Here, the radio resource scheduling information is downlink scheduling information, and the downlink scheduling information may be downlink control information (DCI, downlink Control Information), which is generally carried by a physical downlink control channel (PDCCH, physical Downlink Control Channel).

Here, in actual application, the MAC CE in which the UE MSB is placed may be referred to as a UE ID MAC CE.

Specifically, as shown in fig. 2, the MSBs of the UE are placed in a MAC CE in a Protocol Data Unit (PDU) of a MAC layer.

Here, an LC ID may also be carried in the MAC sub-header, where the LC ID is used to determine whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

The specific format of LC ID is shown in fig. 3. In practical application, the LC ID index may be 01110, and the corresponding logical channel value may be a short UE ID. The short UE ID indicates the MAC CE of the UE.

In an embodiment, when transmitting radio resource scheduling information to the UE, the method may include:

and transmitting the wireless resource scheduling information in a paging subframe.

In this case, the downlink data corresponding to the UE is transmitted in the current paging subframe.

In an embodiment, before sending the radio resource scheduling information to the UE, the method may further include:

carrying a first cell in the paging message, wherein the first cell indicates that the UE has downlink service information;

and transmitting the paging message in a paging subframe.

In this case, when transmitting radio resource scheduling information to the UE, the method may further include:

transmitting radio resource scheduling information to the UE in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In practical application, the paging message may further be used to indicate the interval between the radio resource scheduling information subframe corresponding to the UE and the paging subframe.

Based on this, the method may further comprise:

In an embodiment, uplink service data of the UE is received before sending radio resource scheduling information to the UE; the method may further include, prior to transmitting the radio resource scheduling information to the UE:

carrying a second cell in the paging message, wherein the second cell indicates a second interval between the uplink data subframe and the downlink scheduling information subframe of the UE; the second interval is L TTIs;

and transmitting the paging message in a paging subframe.

Here, in practical application, the second interval may be a predetermined one.

In this case, uplink service data of the UE is received before radio resource scheduling information is transmitted to the UE; when transmitting radio resource scheduling information to the UE, the method may include:

transmitting the radio resource scheduling information in the L-th TTI to the L+M-1-th TTI after the uplink data subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In an embodiment, the method may further comprise:

and sending downlink data to the UE.

Specifically, downlink data is sent to the UE by using the resources corresponding to the radio resource scheduling information.

Correspondingly, the UE needs to acquire the identifier of the radio resource scheduling, so as to acquire the radio resource scheduling information issued to itself.

Based on this, the present embodiment also provides a scheduling information transmission method, applied to UE, as shown in fig. 4, including the following steps:

step 401: taking LSB of UE ID as identification of wireless resource scheduling;

here, in practical application, the UE may determine that the received data is its own data by matching the received MAC CE field with the MSB of its own UE ID.

When the MSB of the matching received MAC CE field and the UE ID of the UE are inconsistent, the UE determines that the received data is not the own data.

Here, the identification of the UE using radio resource scheduling should be the same as the identification of radio resources employed by the base station.

Step 402: and receiving the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier.

In other words, the radio resource scheduling information is resolved by using the identifier of the radio resource scheduling, and the radio resource scheduling information of the UE is obtained.

Specifically, the UE receives scrambled radio resource scheduling information;

and decoding the scrambled wireless resource scheduling information by using the wireless resource scheduling identification to obtain the wireless resource scheduling information.

Here, in an embodiment, when receiving the radio resource scheduling information sent by the base station, the method may further include:

And receiving the wireless resource scheduling information in a paging subframe.

In this case, the UE receives corresponding downlink data in the current paging subframe.

In an embodiment, before receiving the radio resource scheduling information sent by the base station, the method may further include:

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message to obtain a first cell;

and determining that the UE has downlink service information by using the first cell.

In this case, when receiving radio resource scheduling information transmitted by the base station, the method may include:

Based on this, upon receiving the paging message, the method may further include:

analyzing the first cell to obtain a carried field, and determining a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe according to the analyzed field; the first interval is N TTIs.

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message, and determining a second interval between the uplink data subframe of the UE and the downlink radio resource scheduling information subframe according to the analyzed second cell information; the second interval is L TTIs.

Here, in practical application, the second interval may be a predetermined one.

In this case, the uplink service data is sent to the base station before receiving the radio resource scheduling information sent by the base station; when receiving the radio resource scheduling information sent by the base station, the method may further include:

receiving the radio resource scheduling information in the L-th TTI to the L+M-1-th TTI after the uplink data subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

Here, in actual application, the MSB of the UE may be placed in the MAC CE of the MAC layer. At this time, the UE parses the MAC CE to determine whether the received downlink data is the downlink data of the UE.

Here, in practical application, the MAC header may further carry an LC ID, where the LC ID is used to determine whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

Based on this, in an embodiment, the UE parses the LC ID;

and determining whether the MAC CE received by the UE carries the MSB of the UE ID according to the LC ID.

After the UE obtains the radio resource scheduling information, downlink data sent by the base station may be received according to the radio resource scheduling information.

Specifically, the UE receives downlink data sent by the base station by using a resource corresponding to the radio resource scheduling information.

It should be noted that: the window for blind detection of the UE is M TTIs.

According to the scheduling information transmission method provided by the embodiment of the invention, the base station takes the LSB of the UE ID as the identifier of the wireless resource scheduling; transmitting radio resource scheduling information to the UE according to the radio resource scheduling identifier; and for the UE, taking the LSB of the UE ID as an identifier of the wireless resource scheduling, and receiving wireless resource scheduling information sent by the base station according to the identifier of the wireless resource scheduling. By the method, the UE can acquire the unique scheduling information identifier under the condition of no random access flow, and receive the wireless resource scheduling information sent by the base station according to the wireless resource scheduling identifier, in other words, the determination of the scheduling information identifier can be realized under the condition of no random access flow, so that the transmission of the scheduling information is realized, and the corresponding downlink service information can be received subsequently.

Example two

On the basis of the first embodiment, this embodiment describes a procedure in which a base station (evolved node B (eNB)) directly schedules downlink data at paging subframe timing.

The application scenario described in this embodiment is: the UE is in an evolved packet system connection management IDLE (ECM-IDLE, EPS Connection Management IDLE) state. UEs in ECM-IDLE state, each UE having a unique UE ID.

As shown in fig. 5, the process includes the steps of:

step 501: downlink traffic data or signaling arrives at the base station;

here, when downlink traffic data or signaling arrives at the base station, the base station needs to determine He Shixia to send radio resource scheduling information.

Specifically, since the UE is in the ECM-IDLE state, it cannot be determined in which TTI the base station issues the corresponding radio resource scheduling information. Therefore, the base station needs to select a proper scheduling opportunity and issue corresponding scheduling information.

Step 502: the base station sends wireless resource scheduling information to the UE at PO;

in this embodiment, the base station may transmit the downlink scheduling information in a specific subframe (which is called a Paging subframe in the following description, and is called a Paging Occasion (PO)) of a specific Frame (which is called a Paging Frame (PF)) within a Paging (Paging) period.

Here, the radio resource scheduling information is downlink scheduling information scrambled with an identification of radio resource scheduling (hereinafter referred to as downlink scheduling information). The downlink scheduling information may be DCI carried by the PDCCH.

The PDCCH may include information for receiving PDSCH (downlink data information) such as a physical resource indication and modulation and coding scheme (MCS, modulation and Coding Scheme).

The identifier of the radio resource scheduling is the LSB of the UE ID, the LSB is 16bits, and the MSB of the UE ID is placed in the corresponding UE ID MAC CE.

Step 503: the base station adopts the MCS to transmit downlink air interface data on the physical resource indicated by the physical resource;

step 504: after receiving the downlink scheduling information, the UE analyzes the corresponding downlink scheduling information;

specifically, the UE parses the PDCCH using an identity of the radio resource schedule (which may be understood as a C-RNTI in this embodiment). Wherein, the C-RNTI is LSB (16 bits) of the UE ID.

It should be noted that, for which time the UE receives paging, the embodiment of the present invention is not specifically described. The UE will attempt to resolve the downlink scheduling information at every PO of the PF during its Paging cycle.

Step 505: the UE analyzes the corresponding downlink air interface data;

specifically, the UE receives downlink air interface data (carried by PDSCH) according to PDCCH information, for example, receives and decodes the downlink air interface data according to information for receiving PDSCH, such as physical resources, MCS, etc., indicated in the PDCCH, and determines whether decoding is successful.

Here, in practical application, the downlink air interface data is transmitted in a data block manner.

Step 506: after the decoding is successful, the UE transmits the received downlink data information to an upper protocol layer, namely an MAC layer for processing;

step 507: the UE MAC layer determines whether the acquired MAC CE field is consistent with the MSB of the UE ID of itself, and if so, considers the received data to be the data of itself, and continues to execute step 508; otherwise, discard the data, execute step 509;

here, the MAC CE field in this step is a UE ID MAC CE field.

Step 508: the MAC layer of the UE analyzes a MAC Service Data Unit (SDU) of the UE in the PDU, and delivers the PDU to an upper protocol layer, namely a Radio Link Control (RLC) layer/Packet Data Convergence Protocol (PDCP) process, and the subsequent flow is consistent with the current protocol;

Step 509: ending the current processing flow.

Example III

On the basis of the first embodiment, this embodiment describes that the base station (eNB) issues downlink traffic scheduling information in N TTIs after the PO time, and carries cells in the paging message to indicate that there is downlink traffic information, and several subframes after N TTIs, where there is downlink traffic. Here, the N TTIs are specified in a protocol. That is, the value of N is a constant.

The application scenario described in this embodiment is: the UE is in ECM-IDLE state. UEs in ECM-IDLE state, each UE having a unique UE ID.

As shown in fig. 6, the process includes the steps of:

step 601: downlink traffic data or signaling arrives at the base station;

here, when downlink traffic data or signaling arrives at the base station, the base station needs to determine He Shixia to send scheduling information.

Step 602: the base station transmits Paging information in a Paging subframe, and transmits the radio resource scheduling information of the UE in N TTIs after the last Paging subframe in the current Paging frame;

Here, the Paging message carries an indication that the UE subsequently exists a downlink service.

In this embodiment, the base station carries a cell in the Paging message, and instructs the base station to transmit downlink scheduling information to one or some UEs in the Paging list, and send the Paging message in the Paging subframe, and send the downlink scheduling information in the nth TTI after the last Paging subframe (i.e., PO) in one Paging frame.

In practical application, the interval (N TTIs) between the paging subframe and the subframe for transmitting the downlink scheduling information is predetermined.

Specifically, the base station carries a cell in the Paging message, where the cell corresponds to a UE in a Paging list (Paging record list), and indicates that some UEs in the Paging record list start at the 4 th (for example, n=4) TTI after the last Paging subframe (i.e. PO) in the current PF specified by the protocol, and the base station will send corresponding downlink scheduling information.

The PDCCH may include information for receiving PDSCH (downlink data information) such as a physical resource indicator and MCS.

Step 603: the base station adopts the MCS to transmit downlink air interface data on the physical resource indicated by the physical resource;

step 604: after receiving the downlink scheduling information, the UE analyzes the corresponding downlink scheduling information;

specifically, the UE needs to identify the last paging subframe of the current PF after receiving the paging message. When the downlink scheduling information is PDCCH information, the UE parses the PDCCH from the nth TTI to the n+m-1 th TTI of the last paging subframe of the current PF using an identification of radio resource scheduling (which may be understood as a C-RNTI in this embodiment). Where M represents that the window in which the UE blindly detects the PDCCH is M TTIs. Wherein, the C-RNTI is LSB (16 bits) of the UE ID.

It should be noted that, for which time the UE receives paging and how to determine the last paging subframe (i.e. PO) of the current PF, the embodiment of the present invention is not specifically described.

Step 605: the UE analyzes the corresponding downlink air interface data;

Here, in practical application, the downlink air interface data is transmitted in a data block manner. The timing relationship between PDCCH and PDSCH is not specifically described in this embodiment.

For example, after resolving a cell with a downlink service in a Paging message, the UE determines the last Paging subframe (i.e., PO) of the current PF, decodes the corresponding C-RNTI-scrambled downlink scheduling information (i.e., PDCCH) in 4 to (4+6-1) TTIs after the last Paging subframe (i.e., PO), receives and decodes downlink air interface data according to the information for receiving the PDSCH, such as physical resources and MCS indicated in the PDCCH, and determines whether to decode successfully.

Step 606: after the decoding is successful, the UE transmits the received downlink data information to an upper protocol layer, namely an MAC layer for processing;

step 607: the UE MAC layer determines whether the acquired MAC CE field is consistent with the MSB of its own UE ID, and if so, considers the received data to be its own data, and continues to execute step 608; otherwise, discard the data, go to step 609;

here, the MAC CE field in this step is a UE ID MAC CE field.

Step 608: the MAC layer of the UE analyzes the MAC SDU of the UE in the PDU and transmits the MAC SDU to an upper protocol layer, namely RLC layer/PDCP processing, and the subsequent flow is consistent with the current protocol;

Step 609: ending the current processing flow.

Example IV

On the basis of the first embodiment, this embodiment describes that the base station transmits downlink data information in N TTIs after the PO time, carries cells in the paging message to indicate that there is downlink service information, and has downlink service in N subframes after the TTI.

Here, this field can be configured at the time of actual application. That is, the value of N may be set. The value of N of each UE has no correlation, and the base station can be set according to actual conditions.

As shown in fig. 7, the process includes the steps of:

step 701: downlink traffic data or signaling arrives at the base station;

Step 702: the base station transmits Paging information in Paging subframes, and transmits the radio resource scheduling information of the UE in N TTIs after the last Paging subframe in the current PF;

In this embodiment, the base station carries a cell in the Paging message, which indicates that the base station will transmit downlink scheduling information to one or some UEs in the Paging list, where a field may be carried in the added cell to indicate the interval N between the Paging subframe of each UE and the subframe in which the downlink scheduling information is transmitted, that is, the value of N.

For example, the base station carries a cell in the Paging message, which corresponds to the UE in the Paging list (Paging record list). The cell informs a UE in the PagingRecordList that the interval between the paging subframe and the subframe of the downlink scheduling information sent by the base station is 3 TTIs; the cell simultaneously informs another UE in the paging record list that the interval between the paging subframe and the subframe in which the base station transmits the downlink scheduling information is 4 TTIs.

The PDCCH includes information for receiving PDSCH (downlink data information) such as an indicated physical resource indication and MCS. And the base station transmits the DCI bearer to the UE on the PDCCH.

The identifier of the radio resource scheduling is the LSB of the UE ID, the LSB is 16bits, and the MSB of the UE ID is placed in the corresponding UE ID MAC CE to be issued.

Step 703: the base station adopts the MCS to transmit downlink air interface data on the physical resource indicated by the physical resource;

step 704: after receiving the downlink scheduling information, the UE analyzes the corresponding downlink scheduling information;

Step 705: the UE analyzes the corresponding downlink air interface data;

For the above example, after the UE parses the cell with the downlink service in the Paging message, it determines the last Paging subframe (i.e., PO) of the current PF, decodes the corresponding C-RNTI-scrambled downlink scheduling information (i.e., PDCCH) in 3 to (3+6-1) TTIs after the last Paging subframe (i.e., PO), receives and decodes downlink air interface data according to the information for receiving PDSCH, such as physical resources and MCS indicated in the PDCCH, and determines whether to decode successfully. In addition, the downlink scheduling information (i.e., PDCCH) scrambled by the corresponding C-RNTI can be decoded for 4 to (4+6-1) TTIs after the last paging subframe (i.e., PO) for another UE in the paging list.

Step 706: after the decoding is successful, the UE transmits the received downlink data information to an upper protocol layer, namely an MAC layer for processing;

step 707: the UE MAC layer determines whether the acquired MAC CE field is consistent with the MSB of its own UE ID, and if so, considers the received data to be its own data, and continues to execute step 708; otherwise, discard the data, go to step 709;

Here, the MAC CE field in this step is a UE ID MAC CE field.

Step 708: the MAC layer of the UE analyzes the MAC SDU of the UE in the PDU and transmits the MAC SDU to an upper protocol layer, namely RLC layer/PDCP processing, and the subsequent flow is consistent with the current protocol;

step 709: ending the current processing flow.

Example five

On the basis of the first embodiment, the present embodiment describes a process of scheduling downlink traffic triggered by uplink traffic, that is, transmitting corresponding downlink traffic after receiving L TTIs of feedback information of the uplink traffic by the base station.

The value of L may be indicated by carrying a cell in the paging message, or may be a specified value.

As shown in fig. 8, the process includes the steps of:

step 801: downlink traffic data or signaling arrives at the base station;

Step 802: after receiving uplink data of the UE, the base station transmits radio resource scheduling information to the UE in L TTIs;

specifically, after receiving uplink service of the UE, the base station issues corresponding downlink scheduling information after L TTIs, that is, issues corresponding downlink scheduling information from the L th TTI to the l+m-1 th TTI after receiving the uplink service of the UE.

Here, the value of N in actual application is predetermined. For example, the base station is specified to issue corresponding downlink scheduling information 4 TTIs after receiving the uplink service of the UE.

The PDCCH may include information for receiving PDSCH (downlink data information) such as an indicated physical resource indication and MCS.

Step 803: the base station adopts the MCS to transmit downlink air interface data on the physical resource indicated by the physical resource;

step 804: after receiving the downlink scheduling information, the UE analyzes the corresponding downlink scheduling information;

Specifically, the UE analyzes the PDCCH using an identity of radio resource scheduling (which may be understood as a C-RNTI in this embodiment) from an L th TTI to an l+m-1 th TTI after transmitting data information. Where M represents that the window in which the UE blindly detects the PDCCH is M TTIs.

Wherein, the C-RNTI is LSB (16 bits) of the UE ID.

Step 805: the UE analyzes the corresponding downlink air interface data;

For example, the UE decodes the corresponding C-RNTI scrambled downlink scheduling information from the 6 th TTI to the 6+4-1=9 th TTI after transmitting the uplink data. At this time, L takes on a value of 6, and M takes on a value of 4.

Step 806: after the decoding is successful, the UE transmits the received downlink data information to an upper protocol layer, namely an MAC layer for processing;

step 807: the UE MAC layer determines whether the acquired MAC CE field is consistent with the MSB of the UE ID of itself, and if so, considers the received data to be the data of itself, and continues to execute step 808; otherwise, discard the data, go to step 809;

Here, the MAC CE field in this step is a UE ID MAC CE field.

Step 808: the MAC layer of the UE analyzes the MAC SDU of the UE in the PDU and delivers the MAC SDU to an upper protocol layer, namely RLC layer/PDCP processing, and the subsequent flow is consistent with the current protocol.

Step 809: ending the current processing flow.

It should be noted that: the second to fourth embodiments describe only the transmission process of the scheduling information in the new downlink data transmission process. In practical application, the downlink scheduling also involves retransmission process, and the priority of retransmission is higher than that of new transmission. The retransmission scheduling method may refer to a new transmission scheduling method, which is not described herein.

Example six

In order to implement the method of the embodiment of the present invention, this embodiment provides a scheduling information transmission apparatus, which is disposed on a base station, as shown in fig. 9, and includes:

a first allocation unit 91, configured to use LSB of the UE ID as an identifier of radio resource scheduling;

and a sending unit 92, configured to send radio resource scheduling information to the UE according to the identifier of the radio resource scheduling.

That is, the first allocation unit 91 allocates an identifier of radio resource scheduling for the UE; the identity of the allocated radio resource schedule is the LSB of the UE ID of the UE.

The identity of the radio resource schedule is used to distinguish between different UEs, i.e. to distinguish which UE the radio resource schedule information is. In an embodiment, the length of the identifier of the radio resource scheduling may be 16 bits, that is, the value range is 0-65535. The reason for setting the length of the flag of the radio resource schedule in this way is that: considering that the number of access UEs generally does not exceed 65536 in one cell at present, in the subsequent development process, when the number of access UEs exceeds 65536, the length of the identifier of the radio resource scheduling can be further expanded at this time.

The transmitting unit 92 is specifically configured to:

scrambling the radio resource scheduling information by using the allocated radio resource scheduling identifier;

and sending the scrambled wireless resource scheduling information to the UE.

The radio resource scheduling information is downlink scheduling information, which may be DCI, and is generally carried by PDCCH.

For the MSBs of the UE, as shown in fig. 2, the MSBs of the UE are placed in MAC CEs in PDUs of the MAC layer.

In practical application, an LC ID may be added to the MAC sub-header, where the LC ID is used to determine whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

The specific format of the added LC ID is shown in fig. 3, where the LC ID index is 01110, and the corresponding logical channel value is short UE ID. The short UE ID indicates the MAC CE of the UE.

Based on this, the apparatus may further include:

and the generating unit is used for adding an LC ID in the MAC sub-header, wherein the LC ID is used for determining whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

In an embodiment, the sending unit 92 is configured to:

In this case, the sending unit 92 is further configured to send downlink data corresponding to the UE in the current paging subframe.

In an embodiment, the generating unit is further configured to carry a first cell in the paging message, where the first cell indicates that the UE has downlink service information;

the sending unit 92 is further configured to send the paging message in a paging subframe.

In this case, the transmitting unit 92 is configured to: transmitting radio resource scheduling information to the UE in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

Based on this, the generating unit is further configured to carry a field in the first cell, where the field indicates a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe; the first interval is N TTIs.

In an embodiment, uplink service data of the UE is received before sending radio resource scheduling information to the UE; a generating unit, configured to carry a second cell in the paging message, where the second cell indicates a second interval between the UE uplink data subframe and a radio resource scheduling information subframe; the second interval is L TTIs;

Here, in practical application, the second interval may be a predetermined one.

In this case, the transmitting unit 92 is configured to: transmitting the radio resource scheduling information in the L-th TTI to the L+M-1-th TTI after the uplink data subframe; l is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

In an embodiment, the sending unit 92 is further configured to send downlink data to the UE.

Specifically, the transmitting unit 92 transmits downlink data to the UE using the resources corresponding to the radio resource scheduling information.

In practical applications, the first allocation unit 91 and the generating unit may be implemented by a processor (such as a central processing unit (CPU, central Processing Unit), a microprocessor (MCU, micro Control Unit), a digital signal processor (DSP, digital Signal Processor) or a programmable logic array (FPGA, field-Programmable Gate Array) in the scheduling information transmitting apparatus; the transmitting unit 92 may be implemented by a communication interface in the scheduling information transmitting apparatus.

The embodiment of the invention also provides a scheduling information transmission device, which is arranged on the UE, as shown in fig. 10, and comprises:

A second allocation unit 101, configured to use LSB of the UE ID as an identifier of radio resource scheduling;

and a receiving unit 102, configured to receive radio resource scheduling information sent by the base station according to the identifier of the radio resource scheduling.

That is, the second allocation unit 101 allocates an identifier of radio resource scheduling to the UE; the identity of the allocated radio resource schedule is the LSB of the UE ID of the UE.

Based on this, the apparatus may further include:

and the determining unit is used for judging the received data to be the data of the UE by matching the received MAC CE field with the MSB of the UE ID.

Wherein when the matching received MAC CE field is inconsistent with the MSB of the own UE ID, the determining unit determines that the received data is not the UE's own data.

The receiving unit 102 analyzes the radio resource scheduling information by using the identifier of the radio resource scheduling, and obtains the radio resource scheduling information of the UE.

Specifically, the receiving unit 102 decodes the scrambled radio resource scheduling information using the identification of the allocated radio resource schedule, and obtains the radio resource scheduling information.

In an embodiment, the receiving unit 102 is configured to:

receiving the radio resource scheduling information in a paging subframe;

correspondingly, the receiving unit 102 is further configured to receive corresponding downlink data in the current paging subframe.

In an embodiment, the receiving unit 102 is further configured to receive a paging message sent by the base station in a paging subframe;

the determining unit is configured to parse the paging message to obtain a first cell; and determining that the UE has downlink service information by using the first cell.

In this case, the receiving unit 102 is specifically configured to: receiving the radio resource scheduling information in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

Based on this, the determining unit is further configured to:

the determining unit is configured to parse the paging message to obtain a second cell; and determining a second interval between the UE uplink data subframe and a radio resource scheduling information subframe using the second cell; the second interval is L TTIs.

Here, in practical application, the second interval may be a predetermined one.

In this case, the uplink service data is sent to the base station before receiving the radio resource scheduling information sent by the base station; the receiving unit 102 is configured to:

Here, in actual application, the MSB of the UE may be placed in the MAC CE of the MAC layer; the MAC CE is configured to determine whether the sent downlink data is downlink data of the UE.

In this case, the determining unit parses the MAC CE to determine whether the received downlink data is the downlink data of the UE.

In practical application, an LC ID may be added to the MAC header, where the LC ID is used to determine whether the MAC CE received by the UE carries the MSB of the UE ID of the UE.

Based on this, in an embodiment, a determining unit is configured to parse the LC ID; and determining whether the received MAC CE carries the MSB of the UE ID according to the LC ID.

After the UE obtains the radio resource scheduling information, the receiving unit 102 may receive the downlink data sent by the base station according to the radio resource scheduling information.

Specifically, the receiving unit 102 receives the downlink data sent by the base station by using the resource corresponding to the radio resource scheduling information.

In practical application, the second allocation unit 101 and the determining unit may be implemented by a processor (such as CPU, MCU, DSP or FPGA) in the scheduling information transmission device; the receiving unit 102 may be implemented by a communication interface in the scheduling information transmitting apparatus.

It should be noted that: the window for blind detection of the UE is M TTIs.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A scheduling information transmission method, applied to a base station, comprising:

carrying a first cell in the paging message, wherein the first cell indicates that the UE has downlink service;

transmitting the paging message in a paging subframe;

taking the least significant bit LSB of the terminal UE identification ID as the identification of wireless resource scheduling;

2. The method according to claim 1, characterized in that the most significant bit MSB of the UE ID is placed in a control cell MAC CE of a medium access control MAC layer; the MAC CE is used for the UE to determine whether the received downlink data is the downlink data of the UE.

3. The method of claim 1, wherein when transmitting radio resource scheduling information to the UE, the method further comprises:

transmitting the radio resource scheduling information in a paging subframe;

the method further comprises the steps of:

4. The method according to claim 1, wherein when transmitting radio resource scheduling information to the UE, the method comprises:

transmitting radio resource scheduling information to the UE in an nth Transmission Time Interval (TTI) to an (n+M-1) th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

5. The method according to claim 4, wherein the method further comprises:

6. The method according to claim 1, wherein uplink traffic data of the UE is received before radio resource scheduling information is transmitted to the UE; when sending radio resource scheduling information to the UE, the method includes:

7. The method of claim 6, wherein prior to transmitting radio resource scheduling information to the UE, the method further comprises:

and transmitting the paging message in a paging subframe.

8. The method according to claim 2, wherein the method further comprises:

9. A scheduling information transmission method, applied to a UE, the method comprising:

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message to obtain a first cell;

taking LSB of the UEID as an identifier of wireless resource scheduling;

10. The method according to claim 9, wherein the method further comprises:

11. The method of claim 9, wherein upon receiving radio resource scheduling information transmitted by a base station, the method further comprises:

receiving the radio resource scheduling information in a paging subframe;

accordingly, the method further comprises:

and receiving corresponding downlink data in the current paging subframe.

12. The method according to claim 9, wherein upon receiving radio resource scheduling information transmitted by a base station, the method comprises:

13. The method of claim 12, wherein upon receiving the paging message, the method further comprises:

14. The method of claim 9, wherein receiving radio resource scheduling information sent by a base station has previously sent uplink traffic data to the base station; when receiving the radio resource scheduling information sent by the base station, the method comprises the following steps:

15. The method of claim 14, wherein prior to receiving the radio resource scheduling information transmitted by the base station, the method further comprises:

receiving paging information sent by a base station in a paging subframe;

analyzing the paging message to obtain a second cell;

the second interval is determined using the second cell.

16. A scheduling information transmission apparatus, the apparatus comprising:

a sending unit, configured to send radio resource scheduling information to the UE according to the identifier of the radio resource scheduling;

17. The apparatus of claim 16, wherein the transmitting unit is configured to:

18. The apparatus of claim 16, wherein the transmitting unit is further configured to transmit radio resource scheduling information to the UE in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

19. The apparatus of claim 18, wherein the generating unit is further configured to carry a field in the first cell, the field indicating a first interval between a radio resource scheduling information subframe corresponding to the UE and the paging subframe; the first interval is N TTIs.

20. The apparatus according to claim 16, wherein the transmitting unit is specifically configured to:

21. The apparatus of claim 20, wherein the apparatus further comprises:

22. The apparatus of claim 16, wherein the apparatus further comprises:

23. A scheduling information transmission apparatus, the apparatus comprising:

a receiving unit, configured to receive radio resource scheduling information sent by a base station according to the identifier of the radio resource scheduling;

the receiving unit is further configured to receive a paging message sent by the base station in a paging subframe;

24. The apparatus of claim 23, wherein the apparatus further comprises:

and the determining unit is used for judging the received data to be the own data by matching the received MAC CE field with the MSB of the own UEID.

25. The apparatus of claim 23, wherein the receiving unit is configured to:

26. The apparatus of claim 23, wherein the device comprises a plurality of sensors,

the receiving unit is further configured to receive the radio resource scheduling information in an nth TTI to an n+m-1 th TTI after the paging subframe; n is an integer greater than or equal to 1; m is an integer greater than or equal to 1.

27. The apparatus of claim 26, wherein the determining unit is further configured to:

28. The apparatus of claim 23, wherein receiving radio resource scheduling information transmitted by a base station has previously transmitted uplink traffic data to the base station;

29. The apparatus of claim 28, wherein the device comprises a plurality of sensors,

the receiving unit is further configured to receive, in a paging subframe, a paging message sent by the base station before receiving the radio resource scheduling information sent by the base station;

the apparatus further comprises: