CN116567789B

CN116567789B - Scheduling method and device between base station and terminal

Info

Publication number: CN116567789B
Application number: CN202310798019.4A
Authority: CN
Inventors: 潘爱裕; 杨烊
Original assignee: Shenzhen Jianpu Technology Co ltd
Current assignee: Shenzhen Jianpu Technology Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-09-01
Anticipated expiration: 2043-07-03
Also published as: CN116567789A

Abstract

The application provides a scheduling method and a scheduling device between a base station and a terminal, which can reduce the power consumption of the base station and the performance requirement of the terminal when configuring R18_DMRS types. The method comprises the following steps: after the network device establishes radio resource control RRC connection with the plurality of terminals, the network device sends configuration information to the plurality of terminals, where the configuration information is used to indicate that a type of a demodulation reference signal DMRS is an r18_dmrs type, a sequence length of an OCC corresponding to the r18_dmrs type is 4, a sequence length of an OCC corresponding to the r15_dmrs type is 2, and the DMRS is mapped to an antenna port 1000; the network equipment uses the sequence length of OCC to be 4 and 2 to send DMRS to the first terminal through the first terminal of the direct wave beam dispatching, and uses the sequence length of OCC to be 2 to send DMRS to the second terminal through the second terminal of the indirect wave beam dispatching of intelligent reflection surface IRS.

Description

Scheduling method and device between base station and terminal

Technical Field

The present application relates to the field of communications, and in particular, to a method and apparatus for scheduling between a base station and a terminal.

Background

The third generation partnership project (3rd generation partnership project,3GPP) defines in version R15 that the orthogonal illumination code (orthogonal cover code, OCC) is a sequence of length 2, which may be referred to as OCC2, e.g., { +1, +1}, to achieve that the demodulation reference signals (demodulation reference signal, DMRS) may be 2-layered in the spatial domain or that two layers of spatial domain resources may be multiplexed, which may also be referred to as r15_dmrs type. The 3GPP defines in release R18 that OCC is a sequence of length 4, which may be referred to as OCC4, such as { +1, +1}, to implement 4 layers of DMRS in spatial domain, which may also be referred to as r18_dmrs type. It can be appreciated that when the DMRS is transmitted using OCC2, the base station modulates the DMRS using 2 sequences, and when the DMRS is transmitted using OCC4, the base station modulates the DMRS using 4 sequences, and in this case, the modulation complexity is higher and the power consumption of the base station is also higher.

In addition, 3GPP defines Intelligent Reflection Surfaces (IRSs) to increase the signal coverage area of a base station. For example, a beam transmitted by a base station to an IRS may be reflected by the IRS at an angle such that a beam directly transmitted by the base station cannot strike an area. However, IRS increases the complexity of channel estimation by the terminal, that is, the terminal needs to perform joint estimation on the channels between the base station and the IRS, between the IRS and the terminal, and between the base station and the terminal through the DMRS, and the performance requirement on the terminal is also high.

Therefore, how to reduce the power consumption of the base station and reduce the performance requirement for the terminal in the case of the r18_dmrs type is a problem to be solved at present.

Disclosure of Invention

The embodiment of the application provides a scheduling method and a scheduling device between a base station and a terminal, which are used for reducing the power consumption of the base station and the performance requirement on the terminal under the condition of configuring an R18_DMRS type.

In order to achieve the above purpose, the application adopts the following technical scheme:

in a first aspect, a scheduling method between a base station and a terminal is provided, the method including: after the network device establishes Radio Resource Control (RRC) connection with the plurality of terminals, the network device sends configuration information to the plurality of terminals, wherein the configuration information is used for indicating that the type of a demodulation reference signal (DMRS) is an R18_DMRS type, the sequence length of an orthogonal illumination code (OCC) corresponding to the R18_DMRS type is 4, the sequence length of an OCC corresponding to the R15_DMRS type is 2, and an antenna port mapped by the DMRS is an antenna port 1000; for a first terminal directly scheduled by the network device through a beam, the network device uses the sequence length of OCC to be 4 and 2, and sends the DMRS to the first terminal, and for a second terminal indirectly scheduled by the network device through the intelligent reflection surface IRS, the network device uses the sequence length of OCC to be 2, and sends the DMRS to the second terminal.

It will be appreciated that the network device typically uses beamforming techniques to effect illumination of the cell, i.e. the beams referred to herein (e.g. the first and second beams as follows).

In one possible design, the first terminal is located in an area directly irradiated by a first beam of the network device, the first beam being a beam from which the network device polls for transmissions. For example, the first beam is M first beams, where M is an integer greater than 1, in one cycle, the network device may transmit the 1 st first beam to illuminate the first area 1, then transmit the 2 nd first beam to illuminate the first area 2, and so on until the mth first beam is transmitted to illuminate the first area M, then enter the next cycle. The second terminal is located in an area irradiated by the second beam of the network device after being reflected by the IRS, and the second beam is a beam transmitted by the network device to the IRS. For example, the second beam is N second beams, where N is an integer greater than or equal to 1, and the network device may simultaneously transmit N second beams, where the N second beams are reflected by the IRS and then respectively irradiate different second areas, such as the second area 1 to the second area N. Thus, the first area 1 to the first area M are superimposed, and the second area 1 to the second area N are superimposed as cells of the network device.

In a possible design, the network device sends the DMRS to the first terminal using OCC with sequence lengths of 4 and 2, including: the network equipment determines that the sequence length of the OCC is 4 and 2 according to the position distribution of the first terminal; the network device transmits the DMRS to the first terminal using the OCC with sequence lengths of 4 and 2.

Optionally, the location of the first terminal is distributed in the area irradiated by the M first beams, and the network device determines, according to the location distribution of the first terminal, that the OCC has a sequence length of 4 and 2, including: for the i-th first beam irradiation region of the M first beam irradiation regions, if the number of the first terminals in the i-th first beam irradiation region is smaller than the number threshold, the network device determines that the sequence length of the OCC is 4, if the number of the first terminals in the i-th first beam irradiation region is greater than the number threshold, the network device determines that the sequence length of the OCC is 2 or 4, and i is any integer from 1 to M.

It can be appreciated that if the number of first terminals in the region irradiated by the ith first beam is smaller than the number threshold, i.e. the number of first terminals is smaller, the power consumption of the network device is not too high even if OCC4 scheduling. Conversely, if the number of the first terminals in the region irradiated by the ith first beam is greater than or equal to the number threshold, that is, the number of the first terminals is relatively large, the network device may use OCC2 scheduling to reduce power consumption. That is, the OCC may be a beam granularity, i.e., different OCCs may be used for different beams according to circumstances.

For example, if the number of the first terminals in the area irradiated by the ith first beam is greater than the number threshold, the network device determines that the OCC sequence length is 2 or 4, including: in the case that the number of the first terminals in the i-th first beam irradiation area is greater than the number threshold, the network device determines whether the position distribution of the first terminals in the i-th first beam irradiation area is concentrated or loose; if the position distribution of the first terminal in the region irradiated by the ith first beam is concentrated, the network equipment determines that the sequence length of the OCC is 2; or if the first position distribution of the terminal in the region irradiated by the ith first beam is loose, the network equipment determines that the sequence length of the OCC is 4; accordingly, the network device sends the DMRS to the first terminal using the OCC with the sequence length of 4 and 2, including: if the position distribution of the first terminal in the area irradiated by the ith first beam is concentrated, the network equipment uses the OCC with the sequence length of 2 to send the DMRS to the area irradiated by the ith first beam; or if the position distribution of the first terminal in the area irradiated by the ith first beam is loose, the network equipment uses the sequence length of the OCC to be 4 to send the DMRS to the area irradiated by the ith first beam.

It will be appreciated that if the location distribution of the first terminals is concentrated, the channels between the respective first terminals and the network device may interfere with each other. For example, a channel #1 is provided between the first terminal #1 and the network device, a channel #2 is provided between the first terminal #2 and the network device, and a channel #3 is provided between the first terminal #3 adjacent to the first terminal #1 and the first terminal #2 and the network device. In this case, the channel #3 is not only interfered by noise, but also interfered by superposition of the channel #1 and the channel #2, so that the signal demodulation difficulty is increased, and the signal demodulation performance of the first terminal #3 is required to be high. At this time, if OCC4 is still used, i.e., the signal demodulation complexity is high, the demodulation failure of the first terminal #3 may be caused. Therefore, in the case where the location distribution of the first terminal is concentrated, the network device can use OCC2, which can reduce not only power consumption but also the possibility of demodulation failure of the first terminal. Otherwise, if the location distribution of the first terminals is loose, the channels between the first terminals and the network device will not interfere with each other, so the network device may still use OCC4 to improve the utilization rate of the space domain resources.

Wherein, the position distribution of the first terminal in the i-th first beam irradiation area is concentrated or loose: and determining according to the distance between the adjacent first terminals in the i-th first beam irradiation area. For example, the network device may sequentially determine the distance determination between adjacent first terminals in order from small to large according to the identification of the first terminals, such as a user permanent identity (SUPI), so as to determine whether the location distribution of the first terminals within the region irradiated by the ith first beam is concentrated or loose. For example, the i-th first beam irradiation area includes 10 first terminals, i.e., first terminal #1 to first terminal #10 in order of SUPI decreasing to increasing. The network device may first determine distances between the first terminal #1 and the neighboring first terminal #2 and first terminal #3, i.e., L1 and L2, respectively. The network device may again determine the distances between the first terminal #3 and the neighboring first terminal #4, first terminal #5 and first terminal #6, i.e., L3, L4 and L5. The network device may again determine the distance between the first terminal #5 and the neighboring first terminal #7, i.e. L6. The network device may finally determine the distances between the first terminal #6 and the neighboring first terminal #8, first terminal #9 and first terminal #10, i.e. L7, L8 and L9. As such, the network device may determine the sum of L1 to L9, i.e., l1+l2+l3+l4+l5+l6+l7+l8+l9=l. If the value of L is larger than the distance threshold, the position distribution is loose, otherwise, the position distribution is concentrated.

Optionally, if the number of the first terminals in the area irradiated by the ith first beam is greater than the number threshold, the network device determines that the sequence length of the OCC is 2 or 4, including: in the case that the number of the first terminals in the i-th first beam irradiation area is greater than the number threshold, the network device determines whether the position distribution of the first terminals in the i-th first beam irradiation area is near the edge or the center of the i-th first beam irradiation area; if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment determines that the sequence length of the OCC is 2; or if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, the network equipment determines that the sequence length of the OCC is 4; accordingly, the network device sends the DMRS to the first terminal using the OCC with the sequence length of 4 and 2, including: if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment uses the OCC with the sequence length of 2 to send the DMRS to the region irradiated by the ith first beam; or if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, the network device uses the OCC with the sequence length of 4 to send the DMRS to the region irradiated by the ith first beam.

It will be appreciated that if the location of the first terminal is distributed near the edge of the region illuminated by the ith first beam, the channel between the first terminal and the network device may be interfered by other beams. For example, a channel #1 is located between the first terminal #1 located at the i-th first beam irradiated region edge and the network device, and a channel #2 and a channel #3 are located between the first terminal #2 located at the i+1th beam irradiated region edge and the first terminal #3 located at the i-th+1th beam irradiated region edge and the network device, respectively. In this case, the channel #1 is not only interfered by noise, but also interfered by superposition of the channel #2 and the channel #3, so that the signal demodulation difficulty is increased, and the signal demodulation performance of the first terminal #1 is required to be high. At this time, if OCC4 is still used, i.e., the signal demodulation complexity is high, the demodulation failure of the first terminal #1 may be caused. Therefore, if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network device may use OCC2, which may reduce power consumption and reduce the possibility of demodulation failure of the first terminal. Otherwise, if the position distribution of the first terminal in the area irradiated by the ith first beam is close to the center of the area irradiated by the ith first beam, the channel between the first terminal and the network device is not generally interfered by other beams, so that the network device can still use OCC4 to improve the utilization rate of the space domain resource.

For example, if there is an edge of the area irradiated by the ith first beam, which is close to the area irradiated by the ith first beam, of the first terminals exceeding the preset proportion, the position distribution of the first terminals in the area irradiated by the ith first beam is close to the edge of the area irradiated by the ith first beam, or if there is no edge of the area irradiated by the ith first beam, which is close to the area irradiated by the ith first beam, of the first terminals exceeding the preset proportion, the position distribution of the first terminals in the area irradiated by the ith first beam is close to the center of the area irradiated by the ith first beam; wherein the value of the preset proportion is in the interval of 30-40%.

It will be appreciated that since the illuminated area of the first beam is typically an elliptical area, the network device may determine whether the first terminal is located at an edge of the area based on the distance between the first terminal and the two foci of the elliptical area, e.g., if the sum of the distances between the first terminal and the two foci of the elliptical area is greater than a distance threshold, this indicates that the first terminal is near the edge of the area, otherwise the first terminal is near the center of the area.

In one possible design, if the length of the OCC is 4, the downlink control information DCI for scheduling the DMRS is DCI1_0, and if the length of the OCC is 2, the downlink control information DCI for scheduling the DMRS is DCI4_0. Wherein, DCI1_0 and DCI4_0 are used to schedule antenna port 1000. The first terminal or the second terminal may determine an OCC used by the network device according to the DCI format.

In summary, the method of the first aspect has the following technical effects:

when the antenna port mapped by the DMRS is the antenna port 1000, OCC2 is { +1, +1}, and OCC4 is { +1, +1}, in this case, even if the network device modulates the DMRS using OCC2, the terminal can correctly demodulate the DMRS using either OCC2 or OCC 4. Based on this, in case of configuring the r18_dmrs type, the network device may also schedule the terminal using OCC4 and OCC2, respectively. For example, for a first terminal where the network device directly schedules through a beam, the network device uses OCC with sequence length of 4 and 2 to send DMRS to the first terminal, and for a second terminal where the network device indirectly schedules through IRS, the network device may also send DMRS to the second terminal using only OCC with sequence length of 2, which can reduce power consumption of the network device and performance requirements of the terminal without affecting reception of the terminal, compared with sending DMRS using OCC4 entirely.

In a second aspect, there is provided a scheduling apparatus between a base station and a terminal, the apparatus comprising: the network device is used for sending configuration information to the plurality of terminals after Radio Resource Control (RRC) connection is established between the network device and the plurality of terminals, wherein the configuration information is used for indicating that the type of a demodulation reference signal (DMRS) is an R18_DMRS type, the sequence length of an orthogonal illumination code (OCC) corresponding to the R18_DMRS type is 4, and the sequence length of an OCC corresponding to the R15_DMRS type is 2; the processing module is used for controlling the receiving and transmitting module to send the DMRS to the first terminal by using the OCC with the sequence length of 4 and 2 for the first terminal directly scheduled by the network equipment through the wave beam, and controlling the receiving and transmitting module to send the DMRS to the second terminal by using the intelligent reflection surface IRS with the sequence length of 2 for the second terminal indirectly scheduled by the network equipment through the intelligent reflection surface IRS.

In one possible design, the first terminal is located in an area directly irradiated by a first beam of the network device, the first beam being a beam from which the network device polls for transmissions. The second terminal is located in an area irradiated by the second beam of the network device after being reflected by the IRS, and the second beam is a beam transmitted by the network device to the IRS.

In one possible design, the processing module is further configured to determine, according to the location distribution of the first terminal, that the sequence length of the OCC is 4 and 2; and the processing module is also used for controlling the receiving and transmitting module to transmit the DMRS to the first terminal by using the OCC with the sequence length of 4 and 2.

Optionally, the positions of the first terminals are distributed in the M areas irradiated by the first beams, for the i-th area irradiated by the first beams in the M areas irradiated by the first beams, the processing module is further configured to determine that the sequence length of the OCC is 4 if the number of the first terminals in the i-th area irradiated by the first beams is less than the number threshold, and the processing module is further configured to determine that the sequence length of the OCC is 2 or 4 if the number of the first terminals in the i-th area irradiated by the first beams is greater than the number threshold, where i is any integer from 1 to M.

For example, the processing module is further configured to determine, by the network device, whether the location distribution of the first terminals in the i-th first beam irradiated area is concentrated or loose, in a case where the number of the first terminals in the i-th first beam irradiated area is greater than a number threshold; the processing module is further configured to determine that the sequence length of the OCC is 2 if the position distribution of the first terminal in the region irradiated by the ith first beam is concentrated; or the processing module is further configured to determine that the sequence length of the OCC is 4 if the first location distribution of the terminal in the region irradiated by the ith first beam is loose; correspondingly, the processing module is further configured to control the transceiver module to send the DMRS to the region irradiated by the ith first beam if the position distribution of the first terminal in the region irradiated by the ith first beam is concentrated, and the network device uses the OCC with the sequence length of 2; or the processing module is further configured to control the transceiver module to transmit the DMRS to the region irradiated by the ith first beam, if the position distribution of the first terminal in the region irradiated by the ith first beam is loose, and the network device uses the OCC with the sequence length of 4.

Wherein, the position distribution of the first terminal in the i-th first beam irradiation area is concentrated or loose: and determining according to the distance between the adjacent first terminals in the i-th first beam irradiation area.

Optionally, the processing module is further configured to determine, by the network device, whether the location distribution of the first terminals in the i-th first beam irradiated area is near an edge or a center of the i-th first beam irradiated area, if the number of the first terminals in the i-th first beam irradiated area is greater than a number threshold; the processing module is further configured to determine that the sequence length of the OCC is 2 if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam; or, the processing module is further configured to determine that the sequence length of the OCC is 4 if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam; correspondingly, the processing module is further configured to control the transceiver module to send the DMRS to the region irradiated by the ith first beam if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, and the network device uses the OCC with the sequence length of 2; or the processing module is further configured to control the transceiver module to transmit the DMRS to the region irradiated by the ith first beam if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, and the network device uses the OCC with the sequence length of 4.

In one possible design, if the length of the OCC is 4, the downlink control information DCI for scheduling the DMRS is DCI1_0, and if the length of the OCC is 2, the downlink control information DCI for scheduling the DMRS is DCI4_0.

In a third aspect, a communication device is provided. The communication device includes: a processor coupled to the memory, the processor configured to execute a computer program stored in the memory to cause the communication device to perform the method of the first aspect.

In one possible design, the communication device according to the third aspect may further comprise a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be for use in a communication device according to the third aspect to communicate with other communication devices.

In an embodiment of the present application, the communication apparatus according to the third aspect may be the terminal device according to the first aspect, or the network device according to the second aspect, or a chip (system) or other parts or components that may be disposed in the terminal device or the network device, or an apparatus including the terminal device or the network device.

In addition, the technical effects of the communication device described in the third aspect may refer to the technical effects of the method described in the first aspect, which are not described herein.

In a fourth aspect, a communication system is provided. The communication system includes: a terminal device for performing the method of the first aspect, and a network device for performing the method of the second aspect.

In a fifth aspect, there is provided a computer readable storage medium comprising: computer programs or instructions; the computer program or instructions, when run on a computer, cause the computer to perform the method of the first aspect.

In a sixth aspect, there is provided a computer program product comprising a computer program or instructions which, when run on a computer, cause the computer to perform the method of the first aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flow chart of a scheduling method between a base station and a terminal according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a multi-beam control device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical terms according to the embodiments of the present application will be described first.

1. Beam:

a beam refers to a special transmitting or receiving effect with directivity formed by a transmitter or receiver of a network device or terminal through an antenna array, similar to a beam formed by a flashlight converging light into one direction. The signal is sent and received in a beam mode, so that the transmission data distance of the signal can be effectively improved.

The beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technique. The beamforming technique may specifically be a digital beamforming technique, an analog beamforming technique, or a hybrid digital/analog beamforming technique, etc.

The beams generally correspond to resources. For example, when performing beam measurement, the network device measures different beams through different resources, the terminal feeds back the measured resource quality, and the network device can know the quality of the corresponding beam. During data transmission, the beam can also be indicated by its corresponding resource. For example, the network device indicates a transmission configuration indication-state (state) through a transmission configuration number (transmission configuration index, TCI) field in downlink control information (downlink control information, DCI), and the terminal determines a beam corresponding to the reference resource according to the reference resource included in the TCI-state.

In a communication protocol, the beams may be characterized specifically as digital beams, analog beams, spatial filters (spatial domain filter), spatial filters (spatial filters), spatial parameters (spatial parameter), TCI-states, etc. The beam used to transmit the signal may be referred to as a transmit beam (transmission beam, or Tx beam), spatial transmit filter (spatial domain transmission filter), spatial transmit filter (spatial transmission filter), spatial transmit parameters (spatial domain transmission parameter), spatial transmit parameters (spatial transmission parameter), and the like. The beams used to receive the signals may be referred to as receive beams (or Rx beams), spatial receive filters (spatial domain reception filter), spatial receive filters (spatial reception filter), spatial receive parameters (spatial domain reception parameter), spatial receive parameters (spatial reception parameter), and the like.

It will be appreciated that embodiments of the application are described in terms of beams in general, but that beams may alternatively be understood as other equivalent concepts and are not limited to the concepts mentioned above.

2. The resource:

in a communication protocol, reference signals are configured in the form of resources. The network device configures each reference signal to the terminal in the form of a resource, i.e. a configuration information element, typically including a parameter related to the reference signal, such as a time-frequency resource location, a port number, a time-domain type (periodic/semi-static/non-periodic) of the reference signal, and so on.

The resource may be an uplink signal resource or a downlink signal resource. The uplink signals include, but are not limited to, sounding reference signals (sounding reference signal, SRS), demodulation reference signals (demodulation reference signal, DMRS). The downstream signals include, but are not limited to: channel state information reference signals (channel state information reference signal, CSI-RS), cell specific reference signals (cell specific reference signal, CS-RS), UE specific reference signals (user equipment specific reference signal, US-RS), demodulation reference signals (demodulation reference signal, DMRS), and synchronization signals/physical broadcast channel blocks (synchronization system/physical broadcast channel block, SS/PBCH block). Wherein SS/PBCH block may be simply referred to as a synchronization signal block (synchronization signal block, SSB).

The resources may be configured by a radio resource control (radio resource control, RRC) message. In configuration, a resource is a data structure that includes the relevant parameters of its corresponding uplink/downlink signal. For example, the type of uplink/downlink signal, the resource granule carrying the uplink/downlink signal, the transmission time and period of the uplink/downlink signal, the number of ports used for transmitting the uplink/downlink signal, and the like. The resources of each uplink/downlink signal have a unique identification to identify the resources of the downlink signal. It will be appreciated that the identification of a resource may also be referred to as an identification of a resource, and embodiments of the present application are not limited in this regard.

3. An antenna panel:

the antenna panel may refer to an antenna panel of a network device or an antenna panel of a terminal. An antenna panel typically has one or more antennas arranged in an array of antennas that are beamformed to form an analog beam. The antenna array may generate analog beams pointing in different directions. That is, multiple analog beams may be formed on each antenna panel, and beam measurements may be used to determine which analog beam is best used by the antenna panel. In the embodiment of the present application, unless specifically described, the antenna panels refer to the antenna panels of the terminals.

The antenna panel may be represented by a panel (panel), a panel identification (panel index), or the like, or may be implicitly represented by other means. For example, the antenna panel may be characterized by an antenna port (e.g., CSI-RS port, SRS port, DMRS port, phase-tracking reference signal (phase-tracking reference signal, PTRS) port, cell reference signal (cell-specific reference signal, CRS) port, tracking reference signal (tracking reference signal, TRS) port, SSB port, etc.), or an antenna port group, etc.), or may be characterized by a resource (e.g., CSI-RS resource, SRS resource, DMRS resource, PTRS resource, CRS resource, TRS resource, SSB resource, etc.), or a resource group, or may be characterized by a certain channel (e.g., physical uplink control channel (physical uplink control channel, PUCCH), physical uplink shared channel (physical uplink sharing channel, PUSCH), physical random access channel (physical random access channel, PRACH), PDSCH, physical downlink control channel (physical downlink control channel, PDCCH), or physical broadcast channel (physical broadcast channel, PBCH), etc.).

4、IRS：

The IRS is primarily used to reflect signals of a terminal or network device in a specified direction, e.g., the IRS may include a plurality of units, each of which may be used to reflect signals of a terminal or network device in a specified direction. The IRS is operated in full-duplex mode (full-duplex). The network device may utilize the IRS feature to actively control the quality of the wireless channel between the network device and the terminal (e.g., enhance link gain, increase the number of characteristic subchannels, etc.), thereby improving the performance of the system, such as spectral efficiency (spectrum efficiency, SE) or energy efficiency (energy efficiency, EE), etc. The use of IRS is based primarily on an element called "meta-atoms", which can be digitally controlled. By properly designing its shape/size/direction/arrangement, its signal response (changing a certain amplitude phase of the incident signal) can be changed accordingly. In practice, real-time adjustment of the response is achieved by using electronic components such as PIN diodes, FETs or MEMS switches. A typical architecture of an IRS may consist of three layers and intelligent controllers. In the outer layer, a large number of metal sheets (elements) are printed on a dielectric substrate, which interact directly with the incident signal. Behind this layer, copper plates are used to avoid signal energy leakage. Finally, the inner layer is a control circuit board responsible for adjusting the reflected amplitude/phase shift of each element, triggered by an intelligent controller attached to the IRS. In practice, a Field Programmable Gate Array (FPGA) may be implemented as a controller that also acts as a gateway to communicate and coordinate with other network components (e.g., BSs, APs, and user terminals) via separate wireless links for low rate information exchange therewith. That is, the reflection angle of the IPS can also be dynamically controlled by the base station.

The technical scheme of the application will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the present application may be applied to various communication systems, such as a wireless network (Wi-Fi) system, a vehicle-to-arbitrary object (vehicle to everything, V2X) communication system, an inter-device (D2D) communication system, a car networking communication system, a fourth generation (4th generation,4G) mobile communication system, such as a long term evolution (long term evolution, LTE) system, a worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, a fifth generation (5th generation,5G) system, such as a new radio, NR) system, and a future communication system.

The present application will present various aspects, embodiments, or features about a system that may include a plurality of devices, components, modules, etc. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, combinations of these schemes may also be used.

In addition, in the embodiments of the present application, words such as "exemplary," "for example," and the like are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

In the embodiment of the present application, "information", "signal", "message", "channel", and "signaling" may be used in a mixed manner, and it should be noted that the meaning of the expression is matched when the distinction is not emphasized. "of", "corresponding" and "corresponding" are sometimes used in combination, and it should be noted that the meanings to be expressed are matched when the distinction is not emphasized. Furthermore, references to "/" in this disclosure may be used to indicate an "or" relationship.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

To facilitate understanding of the embodiments of the present application, a communication system suitable for use in the embodiments of the present application will be described in detail with reference to the communication system shown in fig. 1.

Fig. 1 is a schematic architecture diagram of a communication system to which a scheduling method between a base station and a terminal according to an embodiment of the present application is applicable. As shown in fig. 1, the communication system includes: terminal equipment and network equipment.

The terminal device may be a terminal device with a transceiver function, or a chip system that may be disposed in the terminal device. The terminal device may also be referred to as a User Equipment (UE), an access terminal device, a subscriber unit (subscriber unit), a subscriber station, a Mobile Station (MS), a mobile station, a remote terminal device, a mobile device, a user terminal device, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a cellular phone (cellular phone), a smart phone (smart phone), a tablet computer (Pad), a wireless data card, a personal digital assistant (personal digital assistant, PDA), a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a machine type communication (machine type communication, MTC) terminal device, a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (self driving), a wireless terminal device in remote medical (remote media), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart city), a roadside terminal device, a mobile unit having a function, and the like. The terminal device of the present application may also be an in-vehicle module, an in-vehicle part, an in-vehicle chip, or an in-vehicle unit built in a vehicle as one or more parts or units. Alternatively, the terminal device may be a customer-premises equipment (CPE).

The network device may be AN Access Network (AN) device, or may be referred to as a radio access network device (radio access network, RAN) device. The RAN device may provide an access function for the terminal device, and is responsible for radio resource management, quality of service (quality of service, qoS) management, data compression, encryption, and other functions on the air interface side. The RAN device may comprise a 5G, such as a gNB in an NR system, or one or a group of base stations (including multiple antenna panels) in the 5G, or may also be a network node, such as a baseband unit (building base band unit, BBU), or a Centralized Unit (CU) or a Distributed Unit (DU), an RSU with base station functionality, or a wired access gateway, constituting a gNB, a transmission point (transmission and reception point, TRP or transmission point, TP), or a transmission measurement function (transmission measurement function, TMF), or a core network element of the 5G. Alternatively, the RAN device may also include an Access Point (AP) in a wireless fidelity (wireless fidelity, wiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, wearable devices, vehicle devices, and so on. Alternatively, the RAN device may also include a next generation mobile communication system, such as a 6G access network device, such as a 6G base station, or in the next generation mobile communication system, the network device may also have other naming manners, which are covered by the protection scope of the embodiments of the present application, which is not limited in any way.

It will be appreciated that fig. 1 is a simplified schematic diagram that is illustrated for ease of understanding, and that other network devices, and/or other terminal devices, may also be included in the communication system, and that fig. 1 is not shown.

It is convenient to understand that the scheduling method between the base station and the terminal provided in the embodiment of the present application in fig. 2 will be specifically described below.

Exemplary, fig. 2 is a schematic flow chart of a scheduling method between a base station and a terminal according to an embodiment of the present application. The method can be applied to the communication between the network equipment and the terminal equipment in the communication system.

As shown in fig. 2, the flow of the scheduling method between the base station and the terminal is as follows:

s201, after the network device establishes a radio resource control RRC connection with the plurality of terminals, the network device transmits configuration information to the plurality of terminals.

The configuration information may be used to indicate that the type of the demodulation reference signal DMRS is an r18_dmrs type, the sequence length of the orthogonal illumination code OCC corresponding to the r18_dmrs type is 4, the sequence length of the OCC corresponding to the r15_dmrs type is 2, and the antenna port mapped by the DMRS is the antenna port 1000.

S202, for a first terminal directly scheduled by network equipment through a wave beam, the network equipment uses OCC with sequence length of 4 and 2 to send DMRS to the first terminal, and for a second terminal indirectly scheduled by the network equipment through an intelligent reflection surface IRS, the network equipment uses OCC with sequence length of 2 to send DMRS to the second terminal.

The first terminal is located in an area directly irradiated by a first beam of the network device, and the first beam is a beam transmitted by the network device in a polling mode. For example, the first beam is M first beams, where M is an integer greater than 1, in one cycle, the network device may transmit the 1 st first beam to illuminate the first area 1, then transmit the 2 nd first beam to illuminate the first area 2, and so on until the mth first beam is transmitted to illuminate the first area M, then enter the next cycle. The second terminal is located in an area irradiated by the second beam of the network device after being reflected by the IRS, and the second beam is a beam transmitted by the network device to the IRS. For example, the second beam is N second beams, where N is an integer greater than or equal to 1, and the network device may simultaneously transmit N second beams, where the N second beams are reflected by the IRS and then respectively irradiate different second areas, such as the second area 1 to the second area N. Thus, the first area 1 to the first area M are superimposed, and the second area 1 to the second area N are superimposed as cells of the network device.

The network device may determine that the sequence length of the OCC is 4 and 2 according to the location distribution of the first terminal, and on this basis, the network device may send the DMRS to the first terminal using the sequence length of the OCC is 4 and 2, which is described in detail below.

In a possible manner, the positions of the first terminals are distributed in the areas irradiated by the M first beams. For the i-th first beam irradiation region of the M first beam irradiation regions, if the number of the first terminals in the i-th first beam irradiation region is smaller than the number threshold, the network device determines that the sequence length of the OCC is 4, if the number of the first terminals in the i-th first beam irradiation region is greater than the number threshold, the network device determines that the sequence length of the OCC is 2 or 4, and i is any integer from 1 to M.

For example, in a case where the number of first terminals in the i-th first beam irradiated area is greater than the number threshold, the network device determines whether the position distribution of the first terminals in the i-th first beam irradiated area is concentrated or loose; if the position distribution of the first terminal in the region irradiated by the ith first beam is concentrated, the network equipment determines that the sequence length of the OCC is 2; or if the first position distribution of the terminal in the region irradiated by the ith first beam is loose, the network equipment determines that the sequence length of the OCC is 4; accordingly, the network device sends the DMRS to the first terminal using the OCC with the sequence length of 4 and 2, including: if the position distribution of the first terminal in the area irradiated by the ith first beam is concentrated, the network equipment uses the OCC with the sequence length of 2 to send the DMRS to the area irradiated by the ith first beam; or if the position distribution of the first terminal in the area irradiated by the ith first beam is loose, the network equipment uses the sequence length of the OCC to be 4 to send the DMRS to the area irradiated by the ith first beam.

Alternatively, in another possible manner, in the case where the number of the first terminals in the region irradiated with the ith first beam is greater than the number threshold, the network device determines whether the position distribution of the first terminals in the region irradiated with the ith first beam is near the edge or the center of the region irradiated with the ith first beam; if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment determines that the sequence length of the OCC is 2; or if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, the network equipment determines that the sequence length of the OCC is 4; accordingly, the network device sends the DMRS to the first terminal using the OCC with the sequence length of 4 and 2, including: if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment uses the OCC with the sequence length of 2 to send the DMRS to the region irradiated by the ith first beam; or if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, the network device uses the OCC with the sequence length of 4 to send the DMRS to the region irradiated by the ith first beam.

In summary, the method of the first aspect has the following technical effects:

The scheduling method between the base station and the terminal provided by the embodiment of the application is described in detail above with reference to fig. 2. The following describes in detail a scheduling apparatus between a base station and a terminal for performing the scheduling method between a base station and a terminal provided in an embodiment of the present application with reference to fig. 3.

Fig. 3 is a schematic structural diagram of a scheduling apparatus between a base station and a terminal according to an embodiment of the present application. Illustratively, as shown in fig. 3, the scheduling apparatus 300 between a base station and a terminal includes: a transceiver module 301 and a processing module 302. A transceiver module 301 for instructing the transceiver function of the scheduling apparatus 300 between the base station and the terminal, and a processing module 302 for executing functions of the scheduling apparatus 300 between the base station and the terminal other than the transceiver function.

For convenience of explanation, fig. 3 shows only main components of the scheduling apparatus between the base station and the terminal.

In some embodiments, the scheduling apparatus 300 between the base station and the terminal may be adapted to the communication system shown in fig. 1, and perform the functions of the terminal device in the method shown in fig. 2.

The transceiver module 301 is configured to send configuration information to a plurality of terminals after the network device establishes radio resource control RRC connection with the plurality of terminals, where the configuration information is used to indicate that a type of a demodulation reference signal DMRS is an r18_dmrs type, a sequence length of an orthogonal illumination code OCC corresponding to the r18_dmrs type is 4, and a sequence length of an OCC corresponding to the r15_dmrs type is 2; a processing module 302, configured to, for a first terminal directly scheduled by a network device through a beam, control the transceiver module 301 to send a DMRS to the first terminal by using OCC with a sequence length of 4 and 2, and the processing module 302, for a second terminal indirectly scheduled by the network device through an intelligent reflection surface IRS, control the transceiver module 301 to send a DMRS to the second terminal by using OCC with a sequence length of 2.

In a possible design, the processing module 302 is further configured to determine, according to the location distribution of the first terminal, that the OCC sequence length is 4 and 2; the processing module 302 is further configured to control the transceiver module 301 to send the DMRS to the first terminal by using the OCC with a sequence length of 4 and 2.

Optionally, the positions of the first terminals are distributed in the M areas irradiated by the first beams, for the i-th area irradiated by the first beam in the M areas irradiated by the first beams, the processing module 302 is further configured to determine that the sequence length of the OCC is 4 if the number of the first terminals in the i-th area irradiated by the first beam is less than the number threshold, the processing module 302 is further configured to determine that the sequence length of the OCC is 2 or 4 if the number of the first terminals in the i-th area irradiated by the first beam is greater than the number threshold, and i is any integer from 1 to M.

For example, the processing module 302 is further configured to determine, by the network device, whether the location distribution of the first terminals in the i-th first beam irradiated area is concentrated or loose, in a case where the number of the first terminals in the i-th first beam irradiated area is greater than the number threshold; the processing module 302 is further configured to determine that the sequence length of the OCC is 2 if the location distribution of the first terminal in the region irradiated by the ith first beam is concentrated; or, the processing module 302 is further configured to determine that the sequence length of the OCC is 4 if the first location distribution of the terminal in the region irradiated by the ith first beam is loose; correspondingly, the processing module 302 is further configured to, if the position distribution of the first terminal in the area irradiated by the ith first beam is concentrated, control the transceiver module 301 to send the DMRS to the area irradiated by the ith first beam by using the OCC sequence length of 2; or, the processing module 302 is further configured to control the transceiver module 301 to transmit the DMRS to the region irradiated by the ith first beam, if the location distribution of the first terminal in the region irradiated by the ith first beam is loose, and the network device uses the OCC with the sequence length of 4.

Optionally, the processing module 302 is further configured to determine, by the network device, whether the location distribution of the first terminals in the i-th first beam irradiated area is near the edge or the center of the i-th first beam irradiated area, if the number of the first terminals in the i-th first beam irradiated area is greater than the number threshold; the processing module 302 is further configured to determine that the sequence length of the OCC is 2 if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam; or, the processing module 302 is further configured to determine that the sequence length of the OCC is 4 if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam; correspondingly, the processing module 302 is further configured to control the transceiver module 301 to transmit the DMRS to the region irradiated by the ith first beam if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, and the network device uses the OCC with the sequence length of 2; or, the processing module 302 is further configured to control the transceiver module 301 to transmit the DMRS into the region irradiated by the ith first beam if the location distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, and the network device uses the OCC with the sequence length of 4.

Optionally, the scheduling apparatus 300 between the base station and the terminal may further include a storage module (not shown in fig. 3) storing a program or instructions. The processing module 302, when executing the program or instructions, enables the scheduling apparatus 300 between the base station and the terminal to perform the functions of the network device in the method of fig. 2 described above.

It is understood that the scheduling apparatus 300 between the base station and the terminal may be a network device, or may be a chip (system) or other parts or components that may be disposed in the network device, or may be an apparatus including the network device, which is not limited in the present application.

In addition, the technical effects of the scheduling apparatus 300 between the base station and the terminal may refer to the technical effects of the method shown in fig. 2, and will not be described herein.

Fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication means may be, for example, a terminal device, or may be a chip (system) or other part or component that may be provided in the terminal device. As shown in fig. 4, the communication device 400 may include a processor 401. Optionally, the communication device 400 may also include a memory 402 and/or a transceiver 403. Wherein the processor 401 is coupled to the memory 402 and the transceiver 403, e.g. may be connected by a communication bus. In addition, the communication device 400 may also be a chip, for example, including the processor 401, and in this case, the transceiver may be an input/output interface of the chip.

The following describes the respective constituent elements of the communication apparatus 400 in detail with reference to fig. 4:

the processor 401 is a control center of the communication device 400, and may be one processor or a collective term of a plurality of processing elements. For example, processor 401 is one or more central processing units (central processing unit, CPU) and may also be an integrated circuit (application specific integrated circuit, ASIC) or one or more integrated circuits configured to implement embodiments of the present application, such as: one or more microprocessors (digital signal processor, DSPs), or one or more field programmable gate arrays (field programmable gate array, FPGAs).

Alternatively, the processor 401 may perform various functions of the communication apparatus 400, such as performing the scheduling method between the base station and the terminal shown in fig. 2 described above, by running or executing a software program stored in the memory 402 and calling data stored in the memory 402.

In a particular implementation, processor 401 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 4, as an embodiment.

In a specific implementation, as an embodiment, the communication apparatus 400 may also include a plurality of processors. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer programs or instructions).

The memory 402 is configured to store a software program for executing the solution of the present application, and the processor 401 controls the execution of the software program, and the specific implementation may refer to the above method embodiment, which is not described herein again.

Alternatively, memory 402 may be, but is not limited to, read-only memory (ROM) or other type of static storage device that may store static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage device that may store information and instructions, but may also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 402 may be integrated with the processor 401 or may exist separately and be coupled to the processor 401 through an interface circuit (not shown in fig. 4) of the communication device 400, which is not specifically limited by the embodiment of the present application.

A transceiver 403 for communication with other communication devices. For example, the communication apparatus 400 is a terminal device, and the transceiver 403 may be used to communicate with a network device or another terminal device. As another example, the communication apparatus 400 is a network device, and the transceiver 403 may be used to communicate with a terminal device or another network device.

Alternatively, the transceiver 403 may include a receiver and a transmitter (not separately shown in fig. 4). The receiver is used for realizing the receiving function, and the transmitter is used for realizing the transmitting function.

Alternatively, transceiver 403 may be integrated with processor 401 or may exist separately and be coupled to processor 401 by an interface circuit (not shown in fig. 4) of communication device 400, as embodiments of the application are not specifically limited in this regard.

It will be appreciated that the configuration of the communication device 400 shown in fig. 4 is not limiting of the communication device, and that an actual communication device may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

In addition, the technical effects of the communication device 400 may refer to the technical effects of the method described in the above method embodiments, which are not described herein.

It should be appreciated that the processor in embodiments of the application may be a central processing unit (central processing unit, CPU), which may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center by a wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A scheduling method between a base station and a terminal, the method comprising:

after a network device establishes Radio Resource Control (RRC) connection with a plurality of terminals, the network device sends configuration information to the plurality of terminals, wherein the configuration information is used for indicating that the type of a demodulation reference signal (DMRS) is an R18_DMRS type, the sequence length of an orthogonal illumination code (OCC) corresponding to the R18_DMRS type is 4, the sequence length of an OCC corresponding to the R15_DMRS type is 2, and an antenna port mapped by the DMRS is an antenna port 1000;

for a first terminal of the network device directly scheduled by a beam, the network device uses the sequence length of OCC to be 4 and 2 to send the DMRS to the first terminal, and for a second terminal of the network device indirectly scheduled by the intelligent reflection surface IRS, the network device uses the sequence length of OCC to be 2 to send the DMRS to the second terminal.

2. The method of claim 1, wherein the first terminal is located in an area directly illuminated by a first beam of the network device and the second terminal is located in an area illuminated by a second beam of the network device after being reflected by the IRS.

3. The method of claim 2, wherein the first beam is a beam transmitted by the network device in a poll, and the second beam is a beam transmitted by the network device in a fixed direction to the IRS.

4. The method of claim 3, wherein the network device transmits the DMRS to the first terminal using OCC sequence lengths of 4 and 2, comprising:

the network equipment determines that the sequence length of the OCC is 4 and 2 according to the position distribution of the first terminal;

and the network equipment sends the DMRS to the first terminal by using the sequence length of the OCC to be 4 and 2.

5. The method of claim 4, wherein the first beam is M first beams, the locations of the first terminals are distributed in an area irradiated by the M first beams, and the network device determines, according to the location distribution of the first terminals, that the OCC has a sequence length of 4 and 2, including:

For an i-th first beam irradiation region of the M first beam irradiation regions, if the number of the first terminals in the i-th first beam irradiation region is smaller than a number threshold, the network device determines that the sequence length of the OCC is 4, if the number of the first terminals in the i-th first beam irradiation region is greater than the number threshold, the network device determines that the sequence length of the OCC is 2 or 4, M is an integer greater than 1, and i is any integer from 1 to M.

6. The method of claim 5, wherein if the number of the first terminals in the region irradiated by the ith first beam is greater than the number threshold, the network device determines that the OCC has a sequence length of 2 or 4, comprising:

in the case where the number of the first terminals within the i-th first beam irradiated area is greater than the number threshold, the network device determines whether the position distribution of the first terminals within the i-th first beam irradiated area is concentrated or loose;

if the position distribution of the first terminal in the i-th first beam irradiation area is concentrated, the network equipment determines that the sequence length of the OCC is 2; or if the first position distribution of the terminal in the area irradiated by the ith first beam is loose, the network equipment determines that the sequence length of the OCC is 4;

Correspondingly, the network device sends the DMRS to the first terminal by using the OCC with the sequence length of 4 and 2, including:

if the position distribution of the first terminal in the region irradiated by the ith first beam is concentrated, the network equipment uses the sequence length of the OCC to be 2 to send a DMRS to the region irradiated by the ith first beam; or if the position distribution of the first terminal in the region irradiated by the ith first beam is loose, the network device uses the OCC with the sequence length of 4 to send DMRS to the region irradiated by the ith first beam.

7. The method of claim 6, wherein the location distribution of the first terminal within the i-th first beam illuminated area is concentrated or loose as: and determining according to the distance between the adjacent first terminals in the i-th first beam irradiation area.

8. The method of claim 5, wherein if the number of the first terminals in the region irradiated by the ith first beam is greater than the number threshold, the network device determines that the OCC has a sequence length of 2 or 4, comprising:

In the case where the number of the first terminals within the i-th first beam irradiation region is greater than the number threshold, the network device determines whether the position distribution of the first terminals within the i-th first beam irradiation region is near the edge or the center of the i-th first beam irradiation region;

if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment determines that the sequence length of the OCC is 2; or if the position distribution of the first terminal in the i-th first beam irradiation area is close to the center of the i-th first beam irradiation area, the network device determines that the sequence length of the OCC is 4;

if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the edge of the region irradiated by the ith first beam, the network equipment uses the sequence length of the OCC to be 2 to send a DMRS to the region irradiated by the ith first beam; or if the position distribution of the first terminal in the region irradiated by the ith first beam is close to the center of the region irradiated by the ith first beam, the network device uses the OCC with the sequence length of 4 to send DMRS to the region irradiated by the ith first beam.

9. The method of claim 8, wherein if there is an edge of the i-th first beam irradiated area where the first terminal is close to the i-th first beam irradiated area beyond a preset proportion, a position distribution of the first terminal in the i-th first beam irradiated area is close to the edge of the i-th first beam irradiated area, or if the edge of the i-th first beam irradiated area where the first terminal is not close to the i-th first beam irradiated area beyond the preset proportion, a position distribution of the first terminal in the i-th first beam irradiated area is close to a center of the i-th first beam irradiated area;

wherein the value of the preset proportion is in the interval of 30-40%.

10. A scheduling apparatus between a base station and a terminal, the apparatus comprising:

a transceiver module, configured to send configuration information to a plurality of terminals after a network device establishes radio resource control RRC connection with the plurality of terminals, where the configuration information is used to indicate that a type of a demodulation reference signal DMRS is an r18_dmrs type, a sequence length of an orthogonal illumination code OCC corresponding to the r18_dmrs type is 4, and a sequence length of an OCC corresponding to the r15_dmrs type is 2;

The processing module is used for controlling the receiving and transmitting module to transmit the DMRS to the first terminal by using the sequence length of OCC of 4 and 2 for the first terminal directly scheduled by the network equipment through the wave beam, and controlling the receiving and transmitting module to transmit the DMRS to the second terminal by using the sequence length of OCC of 2 for the second terminal indirectly scheduled by the network equipment through the intelligent reflection surface IRS.