CN110831222B - Scheduling method and device - Google Patents
Scheduling method and device Download PDFInfo
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- CN110831222B CN110831222B CN201911151109.4A CN201911151109A CN110831222B CN 110831222 B CN110831222 B CN 110831222B CN 201911151109 A CN201911151109 A CN 201911151109A CN 110831222 B CN110831222 B CN 110831222B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/12—Wireless traffic scheduling
- H04W72/1221—Wireless traffic scheduling based on age of data to be sent
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- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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Abstract
The invention discloses a scheduling method and a scheduling device. The UE firstly receives a first signaling in a first resource pool and then sends a first wireless signal on a target time-frequency resource in a second resource pool. Wherein the first signaling comprises scheduling information of the first wireless signal. The target time frequency resource is the first time frequency resource, or the target time frequency resource is the part of the first time frequency resource except the second time frequency resource. The resource pool includes K milliseconds in the time domain. The invention reduces unnecessary time delay, improves transmission rate, avoids the conflict between HARQ-ACK and uplink data, and makes full use of the resources of the physical layer data channel as far as possible.
Description
The present application is a divisional application of the following original applications:
application date of the original application: 2016 (01 month and 30 days)
- -application number of the original application: 201610070275.1
The invention of the original application is named: scheduling method and device
Technical Field
The present invention relates to transmission schemes in wireless communication systems, and more particularly, to methods and apparatus for scheduling in support of narrowband transmissions.
Background
NB-IOT (narrow band Internet of Things) was established at #69 times the full meeting at 3GPP (3 rd Generation Partner Project) RAN (Radio Access Network) # 69. NB-IOT supports 3 different modes of operation (RP-151621):
1. stand-alone operation, i.e. deployment on the spectrum used by GERAN systems.
2. Guard band operation, i.e. deployment on unused resource blocks in the guard band of an LTE (Long Term Evolution) carrier
3. In-band operation, i.e. deployment on resource blocks on an LTE carrier
Further, in NB-IOT, a UE (User Equipment) supports a Radio Frequency (RF) bandwidth of 180kHz (kiloHertz) in both uplink and downlink, that is, one PRB (Physical Resource Block).
The 3gpp ran1#83 conference, NB-IOT system introduced the concept of Single-tone and Multi-tone transmission in the uplink. Single-tone means that the UE transmits on only one subcarrier when transmitting uplink. The Multi-tone transmission follows the current LTE (Long Term Evolution) uplink SC-FDMA (Single Carrier-Frequency Division Multiple Access) transmission scheme, i.e., transmission is performed on Multiple subcarriers. One benefit of single frequency transmission is that UE uplink radio frequency is simple to implement, has no problem of PAPR (Peak to Average Power Ratio), is low in implementation cost, and can keep low Power consumption to improve the available time of the terminal battery.
In a 3GPP RAN1#, 83Ad hoc conference, resource units (Resource units) occupying different milliseconds are respectively defined for uplink transmission based on Single-tone and Multi-tone. For Single-tone, PUSCH (Physical Uplink Shared Channel) resource units corresponding to 15kHz subcarrier intervals occupy 8ms (milliseconds) in the time domain, and PUSCH resource units corresponding to 3.75kHz subcarrier intervals occupy 32ms in the time domain. For Multi-tone, when 3 subcarriers are occupied by PUSCH, the corresponding resource unit occupies 4ms in the time domain, when 6 subcarriers are occupied by PUSCH, the corresponding resource unit occupies 2ms in the time domain, and when 12 subcarriers are occupied by PUSCH, the corresponding resource unit occupies 1ms in the time domain.
For the conventional LTE system, uplink HARQ (Hybrid Automatic Repeat reQuest) -ACK (Acknowledgement) can be transmitted on PUCCH (Physical Uplink Control Channel) or PUSCH. For NB-IOT, an intuitive idea is to reduce the kind of physical layer channel as much as possible to reduce the complexity of the UE. Thus, one possible scheme is that the HARQ-ACK is transmitted on a physical layer data channel. Based on the above idea, one problem to be solved is HARQ timing.
Disclosure of Invention
In a 3GPP RAN1# #83Adhoc conference, R1-160046 proposes a scheduling mode based on a scheduling window, namely, a user searches UL-Grant (uplink Control Information) DCI (Downlink Control Information) or DL-Grant DCI in a given scheduling window. The scheduling window scheduled by the UL-Grant DCI or the DL-Grant DCI is determined by default. The method can well reduce the DCI overhead.
The inventors found through research that the length of the scheduling window should be at least not less than 32ms according to the conference conclusion of R1-160046 and 3GPP ran1# #83ad_hoc. The scheduling based on the scheduling window may cause unnecessary transmission delay or cause a decrease in transmission rate. For example, for a PUSCH occupying 12 subcarriers, it can be scheduled only once (one HARQ process) in one scheduling window, which greatly reduces the uplink transmission rate and reduces the downlink transmission rate due to the delay of uplink HARQ-ACK.
The present invention provides a solution to the above problems. It should be noted that, in case of no conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
The invention discloses a method in UE supporting narrow-band communication, which comprises the following steps:
-step a. Receiving first signalling in a first resource pool, the first signalling indicating first time-frequency resources from a second resource pool.
-step b. Transmitting the first radio signal on a target time-frequency resource in the second resource pool.
Wherein the first signaling comprises scheduling information of the first wireless signal. The target time frequency resource is the first time frequency resource, or the target time frequency resource is the part of the first time frequency resource except the second time frequency resource. The second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are correlated, and the K is a positive integer.
The essence of the above method is that the lengths of the first and second resource pools in the time domain are varied with the bandwidth occupied by the first wireless signal. When the bandwidth occupied by the first wireless signal is wide, the lengths of the first resource pool and the second resource pool in the time domain are short, so that the transmission delay can be reduced, and the transmission rate can be increased.
As an example, the first bandwidth is one of {3.75kHz,15kHz,45kHz,90kHz,180kHz }.
As an embodiment, the scheduling information includes at least one of { MCS (Modulation and Coding Status), NDI (New Data Indicator), RV (Redundancy Version), TBS (Transport Block Size) }.
As an embodiment, the first signaling is physical layer signaling.
As one embodiment, the first signaling is DCI for uplink grant.
As one example, the K milliseconds are consecutive.
As one embodiment, the first resource pool precedes the second resource pool and the first resource pool and the second resource pool are contiguous (i.e., the last millisecond of the first resource pool and the first millisecond of the second resource pool are contiguous).
For one embodiment, the first resource pool precedes the second resource pool and the first resource pool and the second resource pool are separated by at least one resource pool.
As an embodiment, the first resource pool and the second resource pool are the same resource pool.
As an embodiment, the bandwidth of the resource pool in the frequency domain does not exceed 180kHz.
In one embodiment, the transmission channel corresponding to the first wireless signal is an UL-SCH.
As an embodiment, the logical Channel to which the first wireless signal corresponds includes at least one of { CCCH (Common Control Channel), DCCH (Dedicated Control Channel), DTCH (Dedicated Traffic Channel) }.
As an embodiment, the first time-frequency resource includes T1 subframes in the time domain and P1 subcarriers in the frequency domain, and T1 and P1 are positive integers respectively. As a sub-embodiment of this embodiment, the second time-frequency resource includes, in the time domain, T2 subframes in the T1 subframes, where T2 is smaller than T1. As another sub-embodiment of this embodiment, the second time-frequency resource includes P2 sub-carriers of the P1 sub-carriers in a time domain, and P2 is less than or equal to P1.
In particular, according to one aspect of the present invention, it is characterized in that the first signaling indicates whether the target time frequency resource comprises a second time frequency resource.
As an embodiment, the position of the second time-frequency resource in the first time-frequency resource is fixed.
As an embodiment, the first signaling indicates that the target time frequency resource does not include the second time frequency resource, and the mapping from the first wireless signal to the target time frequency resource adopts a rate matching manner to avoid occupying the second time frequency resource.
The method is characterized in that the first signaling explicitly indicates whether the target time frequency resource comprises a second time frequency resource, and whether the first wireless signal can occupy the second time frequency resource is determined according to the service condition of the second time frequency resource. Compared with the method that the second time-frequency resource is not occupied completely, the method improves the resource utilization efficiency at the cost of slightly increasing the overhead of the first signaling.
Specifically, according to one aspect of the present invention, the step a further includes the steps of:
step A0. receives the second signaling.
Wherein the second signaling is a high layer signaling, and the second signaling indicates a third time frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
In the above aspect, the base station can dynamically or semi-statically reserve time-frequency resources for the HARQ-ACK. The above approach is more flexible than the scheme of a fixed (i.e. not configurable) second time-frequency resource.
As an embodiment, the second signaling is UE specific.
As an embodiment, the second signaling is higher layer signaling and the third time-frequency resource is periodic in time domain.
As an embodiment, the second signaling is higher layer signaling.
As an embodiment, the second signaling is cell common signaling.
As an embodiment, the second signaling is RRC (Radio Resource Control) common signaling.
As an embodiment, the second signaling is RRC specific (Dedicated) signaling.
As an embodiment, the second signaling is physical layer signaling.
As an embodiment, the third time-frequency resource is a time-frequency resource reserved for HARQ-ACK.
As an embodiment, the third time-frequency resource is a time-frequency resource reserved for UCI (Uplink Control Information), where the UCI includes at least HARQ-ACK in { HARQ-ACK, CSI (Channel Status Information) }.
Specifically, according to one aspect of the present invention, the step a further includes the following step A1 and step A2, and the step B further includes the following step B1:
-a step a1. Receiving a third signalling
-a step a2. Receiving a second radio signal
-step b1. Transmitting a third radio signal, the third radio signal indicating whether the second radio signal is correctly decoded.
The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates time-frequency resources occupied by the third wireless signal.
As an embodiment, the transport channel for carrying the second radio signal is a DL-SCH.
As an embodiment, the third signaling is physical layer signaling.
As an embodiment, the third signaling is DCI for downlink grant.
As an embodiment, the third signaling indicates, from the third time-frequency resources, the time-frequency resources occupied by the third radio signal.
As an embodiment, the time-frequency resource occupied by the third radio signal is the second time-frequency resource.
As an embodiment, the first resource pool precedes the second resource pool and the first resource pool and the second resource pool are contiguous, and both the third signaling and the second wireless signal are transmitted in the first resource pool.
As a sub-embodiment of this embodiment, the third wireless signal is transmitted in a second resource pool.
In the two embodiments, the uplink HARQ-ACK corresponding to the downlink data of the UE occurs in the next resource pool of the resource pool corresponding to the downlink data reception, so as to ensure that the scheduling of the UL HARQ-ACK is not earlier than the scheduling of the DL-SCH.
In particular, according to one aspect of the invention, it is characterized in that said K is K1 if the first bandwidth is less than 15kHz. If the first bandwidth is equal to 15kHz, K is K2. Wherein K1 and K2 are positive integers respectively, and K2 is less than K1.
As one example, K1 is greater than or equal to 32.
As an example, K2 is greater than or equal to 8.
In particular, according to one aspect of the invention, it is characterized in that said K is K3 if the first bandwidth is greater than 15kHz. Wherein K3 is less than K2.
As an example, K3 is greater than or equal to 4.
The invention discloses a method in a base station supporting narrow-band communication, which comprises the following steps:
-step a. Transmitting first signalling in a first resource pool, the first signalling indicating first time-frequency resources from a second resource pool.
-step b. Receiving a first radio signal on a target time-frequency resource in a second resource pool.
Wherein the first signaling comprises scheduling information of the first wireless signal. The target time frequency resource is the first time frequency resource, or the target time frequency resource is the part of the first time frequency resource except the second time frequency resource. The second resource pool includes K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, K is related to the first bandwidth, and K is a positive integer.
In particular, according to one aspect of the present invention, it is characterized in that the first signaling indicates whether the target time frequency resource comprises a second time frequency resource.
Specifically, according to an aspect of the present invention, the step a further includes the steps of:
step A0. sends the second signaling.
Wherein the second signaling is a high layer signaling, and the second signaling indicates a third time frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
Specifically, according to one aspect of the present invention, the step a further includes the following step A1 and step A2, and the step B further includes the following step B1:
-step a1. Sending a third signalling
-a step a2. Transmitting a second radio signal
-step b1. Receiving a third radio signal, the third radio signal indicating whether the second radio signal is correctly decoded.
The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates time-frequency resources occupied by the third wireless signal.
Specifically, according to one aspect of the present invention, if the first bandwidth is less than 15kHz, K is K1. If the first bandwidth is equal to 15kHz, K is K2. Wherein K1 and K2 are positive integers respectively, and K2 is less than K1.
In particular, according to one aspect of the invention, it is characterized in that said K is K3 if the first bandwidth is greater than 15kHz. Wherein K3 is less than K2.
The invention discloses a user equipment supporting narrow-band communication, which comprises the following modules:
-a first module: for receiving first signaling in a first resource pool, the first signaling indicating first time-frequency resources from a second resource pool.
-a second module: for transmitting the first wireless signal on the target time-frequency resource in the second resource pool.
Wherein the first signaling comprises scheduling information of the first wireless signal. The target time frequency resource is the first time frequency resource, or the target time frequency resource is the part of the first time frequency resource except the second time frequency resource. The second resource pool includes K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, K is related to the first bandwidth, and K is a positive integer.
As an embodiment, the above user equipment is characterized in that the first module is further configured to receive a second signaling. The second signaling is a high-level signaling, and the second signaling indicates a third time-frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
As an embodiment, the above user equipment is characterized in that the first module is further configured to receive a third signaling, and receive a second wireless signal. The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates a time-frequency resource occupied by the third wireless signal.
As an embodiment, the above user equipment is characterized in that the second module is further configured to send a third wireless signal, where the third wireless signal indicates whether the second wireless signal is decoded correctly.
The invention discloses a base station device supporting narrow-band communication, which comprises the following modules:
-a first module: for transmitting first signaling in a first resource pool, the first signaling indicating first time-frequency resources from a second resource pool.
-a second module: for receiving a first wireless signal on a target time-frequency resource in a second resource pool.
Wherein the first signaling comprises scheduling information of the first wireless signal. The target time frequency resource is the first time frequency resource, or the target time frequency resource is the part of the first time frequency resource except the second time frequency resource. The second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are correlated, and the K is a positive integer.
As an embodiment, the above user equipment is characterized in that the first module is further configured to send the second signaling. Wherein the second signaling is a high layer signaling, and the second signaling indicates a third time frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
As an embodiment, the above user equipment is characterized in that the first module is further configured to send a third signaling, and receive a second wireless signal. The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates time-frequency resources occupied by the third wireless signal.
As an embodiment, the above user equipment is characterized in that the second module is further configured to receive a third wireless signal, and the third wireless signal indicates whether the second wireless signal is decoded correctly.
Compared with the prior art, the invention has the following technical advantages:
determining the time domain length of the resource pool based on the bandwidth of the radio signal, reducing unnecessary delay and increasing the transmission rate
Reduced signaling overhead for scheduling HARQ-ACK and uplink data, improved transmission efficiency
Collision of HARQ-ACK and uplink data is avoided while making full use of the resources of the physical layer data channel as much as possible.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 shows a flow diagram of wireless signal uplink transmission according to an embodiment of the invention;
fig. 2 shows a flow diagram of an uplink HARQ-ACK transmission according to an embodiment of the invention;
FIG. 3 shows a schematic diagram of a given resource pool, according to one embodiment of the invention;
FIG. 4 shows a schematic diagram of a given resource pool, according to another embodiment of the invention;
FIG. 5 shows a schematic diagram of a first time-frequency resource and a second time-frequency resource in a given time window according to an embodiment of the invention;
FIG. 6 shows a schematic diagram of a first time-frequency resource and a second time-frequency resource in a given time window according to yet another embodiment of the invention;
fig. 7 shows a schematic diagram of a resource block occupied by a third time-frequency resource according to an embodiment of the invention;
fig. 8 shows a block diagram of a processing device in a UE according to an embodiment of the invention;
fig. 9 shows a block diagram of a processing means in a base station according to an embodiment of the invention;
Detailed Description
The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.
Example 1
For theBase station N1In step S101, a second signaling is sent, in step S102, a first signaling is sent in the first resource pool, and in step S103, a first wireless signal is received on a target time-frequency resource in the second resource pool.
ForUE U2In step S201, the second signaling is received, in step S202, the first signaling is received in the first resource pool, and in step S203, the first wireless signal is transmitted on the target time-frequency resource in the second resource pool.
In embodiment 1, the second signaling indicates a third time frequency resource, and the second time frequency resource is a portion where the third time frequency resource and the first time frequency resource overlap with each other. The first signaling indicates a first time-frequency resource, which includes a second time-frequency resource. The target time frequency resource comprises the time frequency resources except the second time frequency resource in the first time frequency resource. The target time frequency resource and the second time frequency resource are orthogonal (i.e. the second time frequency resource is not included), or the first signaling indicates whether the target time frequency resource includes the second time frequency resource (the first signaling indicates that the target time frequency resource includes the second time frequency resource, the target time frequency resource is the first time frequency resource). The second signaling is higher layer signaling.
As sub-embodiment 1 of embodiment 1, the first signaling is physical layer signaling and the second signaling is RRC common signaling. The bearer channel to which the first radio signal corresponds is the UL-SCH.
As sub-embodiment 2 of embodiment 1, the first signaling is physical layer signaling and the second signaling is RRC-specific signaling. The bearer channel to which the first radio signal corresponds is the UL-SCH.
As sub-embodiment 3 of embodiment 1, the first time-frequency resource includes T1 consecutive subframes in time domain, P1 consecutive subcarriers in frequency domain in each subframe, where T1 and P1 are positive integers respectively, and the second time-frequency resource includes T2 subframes in the T1 subframes in time domain, and the T2 is smaller than the T1.
As sub-embodiment 4 of embodiment 1, the first signaling includes scheduling information of the first wireless signal. The first signaling indicates that the target time frequency resource does not comprise the second time frequency resource and the first wireless signal adopts a rate matching scheme to avoid occupying the second time frequency resource, or the first signaling indicates that the target time frequency resource comprises the second time frequency resource and the target time frequency resource comprises the second time frequency resource.
As a sub-embodiment 5 of embodiment 1, the first resource pool precedes the second resource pool and the first resource pool and the second resource pool are contiguous (i.e., the last millisecond of the first resource pool and the first millisecond of the second resource pool are contiguous).
As a sub-embodiment 6 of embodiment 1, the first resource pool precedes the second resource pool with at least one resource pool in between.
Example 2
For theBase station N1Is sent in step S104The third signaling transmits the second radio signal in step S105, and receives the third radio signal in step S106.
For theUE U2The third signaling is received in step S204, the second wireless signal is received in step S205, and the third wireless signal is transmitted in step S206.
In embodiment 2, the third wireless signal indicates whether the second wireless signal is decoded correctly, and the third signaling indicates a time-frequency resource occupied by the third wireless signal from a third time-frequency resource; or the time frequency resource occupied by the third wireless signal is the second time frequency resource. The second signaling in the present invention is a higher layer signaling and the third signaling schedules the transmission of the second wireless signal.
As sub-embodiment 1 of embodiment 2, the third wireless signal and the first wireless signal are orthogonal (i.e., non-overlapping).
As sub-embodiment 2 of embodiment 2, the third signaling is physical layer signaling.
Example 3
Example 3a schematic diagram of a given resource pool is illustrated as shown in figure 3. Wherein the given resource pool is one of { a first resource pool, a second resource pool }.
In fig. 3, a given resource pool comprises K milliseconds in the time domain and occupies a narrow band in the frequency domain. The bold boxes identify a given pool of resources. Wherein K is a positive integer.
As sub-example 1 of example 3, the bandwidth of the narrow band does not exceed 180kHz.
As sub-embodiment 2 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 15kHz, and the K is greater than or equal to 8.
As a sub-embodiment 3 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 3.75kHz, and the K is greater than or equal to 32.
As a sub-embodiment 3 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 45kHz, and the K is greater than or equal to 4.
As a sub-embodiment 4 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 90kHz, and the K is greater than or equal to 2.
Example 4
Example 4 illustrates a schematic diagram of a given resource pool, as shown in fig. 4. Wherein the given resource pool is one of { a first resource pool, a second resource pool }.
In fig. 3, a given resource pool is composed of i resource sets, which are consecutive in the time domain and include K milliseconds in total in the time domain. A given pool of resources occupies multiple narrow bands in the frequency domain. Wherein i is a positive integer, K (1) to K (i) are all positive integers, and the sum of K (1) to K (i) is equal to K. The bandwidths occupied by the narrow bands # 1 to # i are all less than 180kHz.
As a sub-embodiment 1 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 15kHz, and the K is greater than or equal to 8.
As a sub-embodiment 2 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 3.75kHz, and the K is greater than or equal to 32.
As a sub-embodiment 3 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 45kHz, and the K is greater than or equal to 4.
As a sub-embodiment 4 of embodiment 3, the given resource pool is a second resource pool, the first bandwidth is equal to 90kHz, and the K is greater than or equal to 2.
As sub-example 5 of example 3, K (1) to K (i) are all equal.
As sub-embodiment 6 of embodiment 3, the narrow bands # 1 to # i all occupy the same bandwidth.
Example 5
Embodiment 5 illustrates a schematic diagram of a first time-frequency resource and a second time-frequency resource in a given time window, as shown in fig. 5. In fig. 5, a bold frame identifies the time-frequency resources occupied by the first time-frequency resources in a time window, and a slash indicates the time-frequency resources occupied by the second time-frequency resources in a time window.
In embodiment 5, the first time-frequency resource occupies the entire narrow band in a given time window, and occupies the entire time window in the time domain. The second time-frequency resource occupies the whole narrow band in a given time window, and occupies part of OFDM symbols in the given time window in time domain.
As sub-example 1 of example 5, the bandwidth of the narrow band does not exceed 180kHz.
As a sub-embodiment 2 of embodiment 5, the duration of the time window is T milliseconds, and T is a positive integer. The time window is located in a second resource pool.
As sub-embodiment 3 of embodiment 5, the first time-frequency resource occupies only one time window in the time domain.
As sub-embodiment 4 of embodiment 5, the first time-frequency resource occupies a plurality of time windows in the time domain.
As sub-example 5 of example 5, the first bandwidth is 15kHz.
As sub-example 6 of example 5, the first bandwidth is 3.75kHz.
As a sub-example 7 of example 5, the first bandwidth is Q times 15kHz, Q being one of {3,6 }.
Example 6
Embodiment 6 illustrates a schematic diagram of a first time-frequency resource and a second time-frequency resource in a given time window, as shown in fig. 6. In fig. 6, a bold frame identifies the time-frequency resources occupied by the first time-frequency resources in a time window, and a slash indicates the time-frequency resources occupied by the second time-frequency resources in a time window.
In embodiment 6, the first time-frequency resource occupies the entire narrow band in a given time window, and occupies the entire time window in the time domain. The second time frequency resource occupies part of subcarriers in the whole narrow band in a given time window, and occupies the whole given time window in the time domain.
As sub-example 1 of example 6, the bandwidth of the narrow band does not exceed 180kHz.
As a sub-embodiment 2 of embodiment 6, the duration of the time window is T milliseconds, the T being a positive integer, the time window being located in the second resource pool.
As sub-embodiment 3 of embodiment 6, the first time-frequency resource occupies only one time window in the time domain.
As sub-embodiment 4 of embodiment 6, the first time-frequency resource occupies a plurality of time windows in the time domain.
As sub-example 5 of example 6, the first bandwidth is 15kHz.
As sub-example 6 of example 6, the first bandwidth is 3.75kHz.
As a sub-example 7 of example 6, the first bandwidth is Q times 15kHz, Q being one of {3,6 }.
Example 7
Embodiment 7 illustrates a schematic diagram of a resource block occupied by a third time-frequency resource, as shown in fig. 7. In fig. 7, the reverse slope identifies the resource block occupied by the third time-frequency resource. Each bi-directional arrow { #1, #2, … } identifies a time window, respectively.
In embodiment 7, the resource blocks occupied by the third time-frequency resource are discontinuous in the time domain, and the resource blocks occupy a narrow band in the frequency domain and a time window in the time domain.
As sub-embodiment 1 of embodiment 7, the resource blocks occupied by the third time-frequency resource periodically appear in the time domain, and the appearance period is n time windows. And n is a positive integer greater than 1.
As sub-embodiment 2 of embodiment 7, the second time-frequency resource occupies only one resource block in the third time-frequency resource.
As sub-embodiment 3 of embodiment 7, the third wireless signal in the present invention is transmitted in a third time-frequency resource, and the third signaling in the present invention indicates a resource block occupied by the first HARQ-ACK from resource blocks occupied by the third time-frequency resource. As a sub-embodiment, the time-frequency resource occupied by the third radio signal within the resource block is default (i.e. does not require a signalling configuration).
As sub-example 4 of example 7, the bandwidth of the narrow band is 180kHz.
As a sub-embodiment 5 of embodiment 7, the RU occupied by the third time-frequency resource within the resource block is fixed (i.e. signaling configuration is not required).
As a sub-embodiment 6 of embodiment 7, the time window occupies M milliseconds in the time domain, with M being a positive integer.
Example 8
Embodiment 8 is a block diagram illustrating a processing apparatus in a UE, as shown in fig. 8. In fig. 8, the UE processing apparatus 200 is mainly composed of a first module 201 and a second module 202.
The first module 201 is configured to receive a first signaling in a first resource pool. The second module 202 is configured to transmit the first wireless signal on a target time-frequency resource in a second resource pool.
In embodiment 8, the first signaling is physical layer signaling and the second signaling is higher layer signaling. The first signaling indicates a first time-frequency resource, which includes a second time-frequency resource. The target time frequency resource comprises a time frequency resource in the first time frequency resource and out of the second time frequency resource. The target time frequency resource and the second time frequency resource are orthogonal, or the first signaling indicates whether the target time frequency resource comprises the second time frequency resource. The second signaling indicates a third time frequency resource, the second time frequency resource being a part of the third time frequency resource.
As sub-embodiment 1 of embodiment 8, the first module 201 is further configured to receive a second signaling. Wherein the second signaling is a high layer signaling, and the second signaling indicates a third time frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
As sub-embodiment 2 of embodiment 8, the first module 201 is further configured to receive the third signaling, and receive the second wireless signal. The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates time-frequency resources occupied by the third wireless signal.
As sub-embodiment 3 of embodiment 8, the second module 202 is further configured to send a third wireless signal, where the third wireless signal indicates whether the second wireless signal is correctly decoded.
Example 9
Embodiment 9 is a block diagram illustrating a processing apparatus in a base station, as shown in fig. 9. In fig. 9, the base station processing apparatus 300 mainly comprises a first module 301 and a second module 302.
The first module 301 is configured to receive an uplink signal. The second module 302 is configured to send the first signaling and send the second signaling. The third module 303 is configured to transmit a wireless signal on the target time-frequency resource.
The first module 201 is configured to receive a first signaling in a first resource pool. The second module 202 is configured to transmit the first wireless signal on the target time-frequency resource in the second resource pool.
In embodiment 9, the first signaling is physical layer signaling and the second signaling is higher layer signaling. The first signaling indicates a first time-frequency resource, which includes a second time-frequency resource. The target time frequency resource comprises a time frequency resource in the first time frequency resource and out of the second time frequency resource. The target time frequency resource and the second time frequency resource are orthogonal, or the first signaling indicates whether the target time frequency resource comprises the second time frequency resource. The second signaling indicates a third time frequency resource, the second time frequency resource being a part of the third time frequency resource.
As sub-embodiment 1 of embodiment 9, the first module 201 is further configured to send a second signaling. Wherein the second signaling is a high layer signaling, and the second signaling indicates a third time frequency resource. The second time frequency resource is an overlapping portion of the first time frequency resource and the third time frequency resource.
As sub-embodiment 2 of embodiment 9, the first module 201 is further configured to send a third signaling, and receive a second wireless signal. The third signaling comprises scheduling information of the second wireless signal, and the third signaling indicates time-frequency resources occupied by the third wireless signal.
As sub-embodiment 3 of embodiment 9, the second module 202 is further configured to receive a third wireless signal, where the third wireless signal indicates whether the second wireless signal is correctly decoded. As sub-embodiment 1 of embodiment 12, the second module 302 is further configured to select a second time-frequency resource.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE and the terminal in the present invention include, but are not limited to, an RFID, an internet of things terminal device, an MTC (Machine Type Communication) terminal, a vehicle-mounted Communication device, a wireless sensor, an internet card, a mobile phone, a tablet computer, a notebook, and other wireless Communication devices. The base station and the base station device in the present invention include, but are not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (12)
1. A method in a UE supporting narrowband communication, comprising:
-step a. Receiving first signalling in a first resource pool, the first signalling indicating first time-frequency resources from a second resource pool;
-step b. Transmitting a first radio signal on a target time-frequency resource in a second resource pool;
wherein the first signaling comprises scheduling information of the first wireless signal; the target time frequency resource is a first time frequency resource, or the target time frequency resource is a part of the first time frequency resource except a second time frequency resource; the second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are related, and the K is a positive integer; the first signaling is downlink control information for uplink grant, and the transmission channel corresponding to the first wireless signal is UL-SCH.
2. The method according to claim 1, wherein the first time-frequency resource comprises T1 subframes in time domain and P1 subcarriers in frequency domain, and wherein T1 and P1 are positive integers respectively; the second time-frequency resource comprises T2 subframes in the T1 subframes in time domain, and the T2 is smaller than the T1.
3. The method of claim 1 or 2, wherein if the first bandwidth is less than 15khz and K is K1; if the first bandwidth is equal to 15kHz, K is K2; wherein K1 and K2 are positive integers respectively, and K2 is less than K1.
4. A method in a base station supporting narrowband communications, comprising the steps of:
-step a. Sending a first signaling in a first resource pool, the first signaling indicating a first time-frequency resource from a second resource pool;
-step b. Receiving a first radio signal on a target time-frequency resource in a second resource pool;
wherein the first signaling comprises scheduling information of the first wireless signal; the target time frequency resource is a first time frequency resource, or the target time frequency resource is a part of the first time frequency resource except a second time frequency resource; the second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are related, and the K is a positive integer; the first signaling is downlink control information for uplink grant, and the transmission channel corresponding to the first wireless signal is UL-SCH.
5. The method of claim 4, wherein the first time-frequency resource comprises T1 subframes in time domain and P1 subcarriers in frequency domain, and wherein T1 and P1 are positive integers respectively; the second time-frequency resource comprises T2 subframes in the T1 subframes in time domain, and the T2 is smaller than the T1.
6. The method of claim 4 or 5, wherein if the first bandwidth is less than 15khz and K is K1; if the first bandwidth is equal to 15kHz, K is K2; wherein, K1 and K2 are respectively positive integers, and K2 is less than K1.
7. A user equipment supporting narrowband communication, comprising:
a first module that receives a first signaling in a first resource pool, the first signaling indicating a first time-frequency resource from a second resource pool;
a second module, configured to send a first wireless signal on a target time-frequency resource in a second resource pool;
wherein the first signaling comprises scheduling information of the first wireless signal; the target time frequency resource is a first time frequency resource, or the target time frequency resource is a part of the first time frequency resource except a second time frequency resource; the second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are related, and the K is a positive integer; the first signaling is downlink control information for uplink grant, and the transmission channel corresponding to the first wireless signal is UL-SCH.
8. The UE of claim 7, wherein the first time-frequency resource comprises T1 subframes in time domain and P1 subcarriers in frequency domain, and wherein T1 and P1 are positive integers respectively; the second time-frequency resource comprises T2 subframes in the T1 subframes in time domain, and the T2 is smaller than the T1.
9. The UE of claim 7 or 8, wherein if the first bandwidth is less than 15kHz, K is K1; if the first bandwidth is equal to 15khz, K is K2; wherein K1 and K2 are positive integers respectively, and K2 is less than K1.
10. A base station device supporting narrowband communication, comprising:
-a first module: the first signaling is used for sending first signaling in a first resource pool, and the first signaling indicates first time-frequency resources from a second resource pool;
-a second module: for receiving a first wireless signal on a target time-frequency resource in a second resource pool;
wherein the first signaling comprises scheduling information of the first wireless signal; the target time frequency resource is a first time frequency resource, or the target time frequency resource is a part of the first time frequency resource except a second time frequency resource; the second resource pool comprises K milliseconds in a time domain, a bandwidth occupied by the first wireless signal is a first bandwidth, the K and the first bandwidth are related, and the K is a positive integer; the first signaling is downlink control information for uplink grant, and the transmission channel corresponding to the first wireless signal is UL-SCH.
11. The base station device according to claim 10, wherein the first time-frequency resource comprises T1 subframes in time domain and P1 subcarriers in frequency domain, and the T1 and the P1 are positive integers respectively; the second time-frequency resource comprises T2 subframes in the T1 subframes in time domain, and the T2 is smaller than the T1.
12. Base station arrangement according to claim 10 or 11, characterized in that if the first bandwidth is less than 15khz, K is K1; if the first bandwidth is equal to 15kHz, K is K2; wherein K1 and K2 are positive integers respectively, and K2 is less than K1.
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| CN110266452B (en) * | 2018-03-12 | 2020-06-30 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
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| CN101925120B (en) * | 2009-06-16 | 2014-11-05 | 中兴通讯股份有限公司 | Resource mapping indication information configuring methods |
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| WO2015139304A1 (en) * | 2014-03-21 | 2015-09-24 | 富士通株式会社 | Resource pool configuration method, resource selection method and apparatus and communication system |
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