CN111787635B - Relay uplink access channel configuration method and device - Google Patents
Relay uplink access channel configuration method and device Download PDFInfo
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- CN111787635B CN111787635B CN201910268937.XA CN201910268937A CN111787635B CN 111787635 B CN111787635 B CN 111787635B CN 201910268937 A CN201910268937 A CN 201910268937A CN 111787635 B CN111787635 B CN 111787635B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
Abstract
The application discloses a relay uplink access channel configuration method and equipment, which solve the problems of how to separately configure random access resources of a terminal and a relay node and simultaneously ensure the half-duplex characteristic of the relay node. The method is used for a system of the base station equipment and the relay equipment, and comprises the following steps: and sending control information to at least 2 relay devices, wherein the control information comprises configuration indexes, the configuration indexes correspond to sending occasions of sending random access signals by the relay devices, and the configuration indexes of adjacent relay devices are different. The first relay equipment receives the control information, obtains a first configuration index, and sends the control information to the second relay equipment, wherein the control information comprises a second configuration index, and the second configuration index is different from the first configuration index. The application also comprises a base station device and a relay device for realizing the method.
Description
Technical Field
The present application relates to the field of mobile communications, and in particular, to a method and a device for configuring a relay uplink access channel.
Background
When a relay node (IAB) and a terminal node (UE) coexist in a cell, if the same random access resource is configured, in order to allow both to access to a base station, the configuration of random access parameters must be changed. Because the relay and the terminal have different transmission power and coverage capability, it is necessary to configure different random access resources for the relay node and the terminal node, and it is necessary to support the network to flexibly configure the random access resources for relay backhaul and access, for example, under the condition that the random access resources of the access link of the terminal are not affected, a longer transmission period and a new random access channel format can be configured for the backhaul random access resources.
In the prior art, a base station configures parameters for a terminal, and the parameters are used for determining the period, offset and the like for transmitting a random access channel (PRACH) by the terminal, so as to obtain the time for transmitting a random access signal.
Disclosure of Invention
The application provides a relay uplink access channel configuration method and equipment, which solve the problems of how to separately configure random access resources of a terminal and a relay node and simultaneously ensure the half-duplex characteristic of the relay node.
In a first aspect, an embodiment of the present application provides a method for configuring a relay uplink access channel, where the method is used for a system including a base station device and a relay device, and includes the following steps: and sending control information to at least 2 relay devices, wherein the control information comprises configuration indexes, the configuration indexes correspond to sending occasions of sending random access signals by the relay devices, and the configuration indexes of adjacent relay devices are different.
As an optimized embodiment of the method of the present invention, a first relay device receives control information to obtain a first configuration index, where the first configuration index corresponds to a transmission timing at which the first relay device transmits a random access signal; the method comprises the steps that a first relay device sends control information to a second relay device, wherein the control information comprises a second configuration index, and the second configuration index corresponds to the sending opportunity of the second relay device for sending a random access signal; wherein the second configuration index is different from the first configuration index.
Preferably, the configuration indexes transmitted to the relay nodes with odd number of hops are the same, and/or the configuration indexes transmitted to the relay nodes with even number of hops are the same.
Further preferably, the configuration indexes sent to relay nodes with different hop counts are different.
In a second aspect, an embodiment of the present application provides a method for configuring a relay uplink access channel, where the method is used for a relay device, and includes the following steps:
the method comprises the steps that a first relay device receives control information to obtain a first configuration index, wherein the first configuration index corresponds to the sending opportunity of the first relay device for sending a random access signal;
a first relay device sends control information to a second relay device, wherein the control information comprises a second configuration index, and the second configuration index corresponds to the sending opportunity of sending a random access signal by the second relay device;
wherein the second configuration index is different from the first configuration index.
Preferably, the configuration indexes sent to the relay nodes with odd number of hops are the same, and or the configuration indexes sent to the relay nodes with even number of hops are the same.
In a third aspect, the present application further provides a relay device, which includes a first receiving module, a data configuration module, a determining module, and a second sending module.
The first receiving module is configured to receive control information and obtain a first configuration index, where the first configuration index corresponds to a sending opportunity of the relay device for sending a random access signal.
The configuration data comprises a configuration index and a corresponding sending opportunity.
The determining module is used for retrieving the configuration data module according to the first configuration index. And acquiring the sending opportunity of sending the random access signal by the relay equipment corresponding to the first configuration index.
The second sending module is configured to send control information, where the control information includes a second configuration index, and the second configuration index is different from the first configuration index.
The embodiment of the invention for further optimizing the relay equipment also comprises a second receiving module and a first sending module. And the first sending module is used for sending the random access signal according to the sending opportunity corresponding to the first configuration index. And the second receiving module is configured to receive the random access signal according to the time offset corresponding to the second configuration index.
In a fourth aspect, the present application further provides a base station device, which includes a third sending module and a third receiving module. The third sending module is configured to send control information to at least 2 relay devices, where the control information includes a configuration index, the configuration index corresponds to a sending opportunity when the relay device sends a random access signal, and the configuration indexes of adjacent relay devices are different. And the third receiving module receives the random access signal according to the sending opportunity corresponding to the configuration index.
In embodiments of the method and apparatus of the present invention, any one of said configuration indices, corresponds to at least one time period value and or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
In embodiments of the method and apparatus of the present invention, the time offset and or time period value, the granularity may be at least one of: system subframe level, slot level, symbol level.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
a method for indicating different configurations of random access of a relay node and a terminal is designed, and the half-duplex characteristic of the relay node can be guaranteed. The method ensures that the relay node does not need to receive the random access information of the child node when sending the random access information, and meanwhile, does not need to send the random access information of the previous node when receiving the random access information. Because the method is optimized on the random access configuration method of the terminal, the unified design of the relay and the terminal is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of a cell terminal and a relay node;
FIG. 2 is a flowchart of an embodiment of a method of the present invention for a base station device;
FIG. 3 is a flowchart of an embodiment of a method of the present invention for a relay device;
fig. 4 is a schematic diagram of relay configurations with different transmission offsets for different hop counts;
fig. 5 is a schematic diagram of relay configurations with different transmission offsets for adjacent hops;
FIG. 6 is a schematic diagram of an embodiment of a relay device for implementing the method of the present invention;
fig. 7 is a schematic diagram of an embodiment of a base station device for implementing the method of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a cell terminal and a relay node.
When a relay node and a terminal node exist in a cell at the same time, if the same random access resource is configured, in order to enable both of them to access a base station, the configuration of the random access parameter is limited. For example, because the power and capability of the relay node (IAB) are high, when the IAB is located outside the cell radius of the main base station, it needs to try to access to the main base station, and then the main base station matches the relay node when configuring the random access parameters for the terminals (UE 1 to UE 3), for example, GP and CP in the transmitted preamble sequence format are large, or the number of cyclic shifts is large, so that the number of available cyclic shifts is reduced, and thus it is not reasonable to access to the terminals located within the cell radius. Since the relay and the terminal have different requirements and capabilities in terms of coverage and transmission power, it is necessary to configure different random access resources for the relay node and the terminal node, and it is necessary to flexibly configure backhaul and access random access resources for the relay, for example, a longer transmission period and a new random access channel format can be configured for the backhaul random access resources without affecting the random access resources of the access link of the terminal. Assuming half-duplex limitation of the relay node, the resources of the backhaul random access signal and the resources of the access random access signal should be time division multiplexed. The access terminal and the random access signal resource configuration to the relay node are also different, such as transmission time, period, format, and the like.
Fig. 2 is a flowchart of an embodiment of the method of the present invention applied to a base station device.
The embodiment of the application provides a relay uplink access channel configuration method, which is used for a system of a base station device and a relay device, and comprises the following steps:
And under the assumption of half-duplex limitation of the relay node, the resources used by the returned random access signal and the resources used by the accessed random access channel are subjected to time division multiplexing. The backhaul means that a random access signal is sent from the relay node to the base station; the access means that the relay device receives a random access signal from the terminal device or another relay device (child node).
The principle of configuring the random access channel parameters for the relay node comprises the following steps: in one aspect, the parameters configured for the access terminal and the relay are different. When a relay node and a terminal node exist in a cell at the same time, if the same random access resource is configured, in order to enable both to access a base station, the configuration of the random access parameter is limited. Therefore, the random access channel resource configurations for the access terminal and for the relay node are different, such as transmission time, period, format, etc., in consideration of different coverage and mobility. On the other hand, since the relay has a half-duplex characteristic, the relay cannot receive the uplink random access resource from the child node relay while transmitting the uplink random access resource, and it is required that the random access resources configured for the adjacent hop number relay devices are orthogonal.
In order to satisfy the orthogonality of the random access resources of the adjacent relay devices, different configuration indexes can be sent to the adjacent relay devices. Preferably, the configuration indexes transmitted to the relay nodes with odd number of hops are the same, and/or the configuration indexes transmitted to the relay nodes with even number of hops are the same.
Further preferably, the configuration indexes sent to the relay nodes with different hop counts are all different.
Step 101 is transmitted to the relay device as a function of the base station device. The base station device transmits the control information to the "at least 2" relay devices, and may be in a direct transmission mode or a relay transmission mode. That is, the base station apparatus may simultaneously transmit the control information to 2 relay apparatuses, or may transmit the control information to 1 relay apparatus (e.g., a first relay apparatus) among them, and then transfer the control information to another 1 relay apparatus (e.g., a second relay apparatus).
When the base station equipment simultaneously sends control information to at least 2 relay equipments, step 101 constitutes a complete technical solution for achieving the object of the present invention, and the control information sent by the base station to the relay equipments with different hop counts contains different configuration indexes; further, the configuration indexes included in the control information transmitted by the base station to the relay devices with the same hop count may be the same. Preferably, the configuration indexes sent to the relay nodes with odd number of hops are the same, and or the configuration indexes sent to the relay nodes with even number of hops are the same.
When the base station device transmits the control information to more than 1 relay device in a relay manner, the number of relay devices with hop count of 1 may be 1 or at least 2. Therefore, as a further optimized embodiment of the method of the present invention, the method further comprises the following steps:
102, a first relay device receives control information to obtain a first configuration index, wherein the first configuration index corresponds to a sending opportunity of the first relay device for sending a random access signal; a first relay device sends control information to a second relay device, wherein the control information comprises a second configuration index, and the second configuration index corresponds to the sending opportunity of sending a random access signal by the second relay device; wherein the second configuration index is different from the first configuration index.
The transmission timing of the random access signal transmitted by the first relay device is different from the transmission timing of the random access signal transmitted by the first relay device. Therefore, the first configuration index and the second configuration index are necessarily different.
For example, the hop count of the first relay device is 1, and the hop count of the second relay device is 2.
Fig. 3 is a flowchart of an embodiment of the method of the present invention applied to a relay device.
The embodiment of the application provides a method for configuring a relay uplink access channel, which is used for relay equipment and comprises the following steps:
It should be noted that how to identify the odd-even hop relay node, the simplest method is that one relay node receives the configuration index for itself, and then sends a new configuration index to the next relay node, where the sending time corresponding to the new configuration index is different from that of itself.
For example, the hop count of the first relay device is odd, and the hop count of the second relay device is even; alternatively, the hop count of the first relay device is odd and the hop count of the second relay device is even.
Preferably, the configuration indexes sent to the relay nodes with odd number of hops are the same, and or the configuration indexes sent to the relay nodes with even number of hops are the same.
Fig. 4 is a schematic diagram of relay configurations with different transmission offsets for different hop counts.
And configuring different offset times for the relay equipment with different hop counts. The timing of the transmission and reception of the random access signal by each relay device is illustrated. The relay with different hop numbers has different sending opportunities, so that the half-duplex characteristic of the relay can be ensured.
The hop count here refers to a radio transmission span over which the base station connects to the relay device. Assuming that the device at the left end in the figure is a base station device, from left to right, the following are respectively: base station, hop-number 1 relay device, hop-number 2 relay device, and hop-number 3 relay device. The relay equipment with hop number 1 sends a random access signal according to time offset T1, and receives the random access signal from the relay equipment with hop number 2 according to time offset T2; the relay equipment of hop number 2 sends a random access signal according to time offset T2, and receives the random access signal from the relay node of hop number 3 according to time offset T3; the relay device of hop count 3 transmits a random access signal according to time offset T3.
Fig. 5 is a schematic diagram of relay configurations with different transmission offsets for adjacent hop counts.
In the table relating to the relay nodes, the relay nodes configured with odd hop numbers and the relay nodes configured with even hop numbers have different random access signal transmission timings. For example, as shown in the figure, the offsets of adjacent hops are configured, and the offsets of relay transmissions of adjacent hops are different, so that the half-duplex characteristic of the relay can be guaranteed.
Still using the device at the left end in the figure as the base station device, from left to right: base station, hop-number 1 relay device, hop-number 2 relay device, and hop-number 3 relay device. The relay equipment with hop number 1 sends a random access signal according to time offset T1, and receives the random access signal from the relay equipment with hop number 2 according to time offset T2; the relay equipment of hop number 2 sends a random access signal according to time offset T2, and receives the random access signal from the relay node of hop number 3 according to time offset T1; the relay device of hop number 3 transmits a random access signal according to the time offset T1.
The following table is the standard informationIn the "configuration index" of the present application, the "configuration index" is shown in the following table "configuration index", where nfns represent the serial numbers of the system frames, "x" represents the time period value of the system frames, and "y" is the time offset value. n is a radical of an alkyl radical SFN modx = y, indicating the nSFN modulo the value of period x, the remainder being y.
Table: TS38.213 Standard Table 6.3.3.2-2 (alternate)
For example, n in a table of the prior art standard SFN The parameter y =0 in modx = y is allocated to the relay node with odd hop number, and y =1 is allocated to the relay node with even hop number, so that the transmission time of the random access signal of the relay node with adjacent hop number is different.
In any of the method embodiments of the present invention, any of the configuration indices corresponds to at least one time period value and or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
In embodiments of the method and apparatus of the present invention, the time offset and or time period value, the granularity, may be at least one of: system subframe level, slot level, symbol level.
That is, the time offset and the time period are not limited to a certain granularity. For example, the time offset value may be represented by the number of system subframes, the number of slots, or the number of symbols; for another example, the time period value may also be represented by the number of system subframes, the number of slots, or the number of symbols. As used in one embodiment of the present application, x, y in the ts38.213table 6.3.3.2-2 are both numbers representing system Subframes (SFN).
Fig. 6 is a schematic diagram of an embodiment of a relay device implementing the method of the present invention.
The application also provides a relay device, which comprises a first receiving module 11, a configuration data module 12, a determining module 13 and a second sending module 22.
The first receiving module is configured to receive control information and obtain a first configuration index, where the first configuration index corresponds to a sending opportunity of the relay device for sending a random access signal.
The configuration data module comprises a configuration index and a corresponding sending opportunity.
The determining module is used for retrieving the configuration data module according to the first configuration index. And acquiring the sending opportunity of sending the random access signal by the relay equipment corresponding to the first configuration index.
The second sending module is configured to send control information, where the control information includes a second configuration index, and the second configuration index is different from the first configuration index.
The embodiment further optimized as the relay device of the present invention further comprises a second receiving module 21 and a first sending module 12. And the first sending module is used for sending the random access signal according to the sending opportunity corresponding to the first configuration index. And the second receiving module is configured to receive the random access signal according to the time offset corresponding to the second configuration index.
It should be noted that the configuration data module includes different configuration indexes and corresponding sending timings to form a configuration data table, and the corresponding sending timings may be retrieved from the configuration data labels according to the configuration indexes. The transmission timing is a parameter indicating the amount of time offset, for example, 0,1,2.
The system configurations in the terminal equipment and the relay equipment are different, so that in a base station system, at least 2 tables related to configuration indexes are contained, one for the access terminal and one for the relay node. In the terminal device configuration data table and the relay device configuration data table, the control information includes different configuration indexes.
In the table relating to the relay node, for example, in the above table, the offset value configuring the relay node is added. The parameter y in the standard configuration table in the prior art is expanded to 8, for example, so that the orthogonality of the relay random access resources with different hop numbers is met.
Fig. 7 is a schematic diagram of an embodiment of a base station device for implementing the method of the present invention.
In a fourth aspect, the present application further provides a base station device, which includes a third receiving module 31 and a third sending module 32. And the third receiving module receives the random access signal according to the sending opportunity corresponding to the configuration index. The third sending module is configured to send control information to at least two relay devices, where the control information includes a configuration index, the configuration index corresponds to a sending opportunity when the relay device sends a random access signal, and configuration indexes of adjacent relay devices are different.
Further, the base station device further includes a configuration data generating module 33, configured to generate random access configuration data of the terminal device and the relay device. The system configurations in the terminal equipment and the relay equipment are different, so that in a base station system, at least 2 tables related to configuration indexes are included, one for the access terminal and one for the relay node. In the terminal device configuration data table and the relay device configuration data table, the control information includes different configuration indexes. When the third receiving module receives a random access signal from a terminal device or a relay device, the random access signal is identified by referring to the configuration data.
In an embodiment of any of the apparatuses of the present invention, any of the configuration indexes corresponds to at least one time period value and/or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
For example, the relay half-duplex characteristic is satisfied by extending the time offset value in the relay device standard configuration table. For example, by configuring different offsets for relay nodes of adjacent hop counts, the characteristics of relay half-duplex are satisfied, and the configuration method may be to configure different offsets for the next relay node after detecting the own offset.
For another example, the relay half-duplex characteristic is satisfied by extending the time period value in the standard configuration table of the relay device. For example, the relay node with adjacent hop counts is configured with different period values to satisfy the characteristics of the relay half-duplex, and the configuration method may be configured with different period values for the next relay node after detecting its own period value.
For another example, the configuration index in the standard configuration table is extended, and more combinations of the time period value and the time offset value are added to determine more transmission opportunities.
The third sending module may be further configured to send a high layer signaling. In the communication system, a new configuration parameter (such as a configuration data table) is issued to a terminal and a relay node through a high-level signaling, the configuration data table of the terminal and the configuration data table of the relay node are respectively defined, and the purpose of separating random access signals sent by the terminal and the relay node can be achieved. Further, a transmission timing corresponding to the configuration index in the configuration data table is selected through control signaling (e.g., control information of the present application).
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (11)
1. A method for configuring relay uplink access channel (RACH), characterized in that,
in a base station system, in a terminal equipment configuration data table and a relay equipment configuration data table, control information contains different configuration indexes; the random access channel resource allocation to the access terminal and the relay node are different;
sending control information to at least 2 relay devices, wherein the control information comprises a configuration index and makes the sending time of adjacent relay devices different corresponding to the sending time of the random access signal sent by the relay device;
a first relay device receives control information to obtain a first configuration index, wherein the first configuration index corresponds to a sending opportunity of sending a random access signal by the first relay device;
a first relay device sends control information to a second relay device, wherein the control information comprises a second configuration index, and the second configuration index corresponds to the sending opportunity of sending a random access signal by the second relay device;
wherein the second configuration index is different from the first configuration index.
2. The method of claim 1,
the configuration indexes sent to the relay nodes with odd hop numbers are the same, and/or the configuration indexes sent to the relay nodes with even hop numbers are the same.
3. The method of claim 1,
the configuration indexes sent to relay nodes of different hop counts are different.
4. The method according to any one of claims 1 to 3,
any one of the configuration indices corresponding to at least one time period value and or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
5. A relay device for implementing the method of any one of claims 1 to 4, comprising a first receiving module, a configuration data module, a determining module, and a second sending module;
the first receiving module is configured to receive control information and obtain a first configuration index, where the first configuration index corresponds to a sending opportunity when the relay device sends a random access signal;
the configuration data comprises configuration indexes and corresponding sending opportunities;
the determining module is configured to retrieve the configuration data module according to the first configuration index, and obtain a sending opportunity of the relay device corresponding to the first configuration index to send the random access signal;
the second sending module is configured to send control information, where the control information includes a second configuration index, and the second configuration index is different from the first configuration index.
6. The relay device according to claim 5, further comprising a second receiving module, a first transmitting module;
the first sending module is used for sending a random access signal according to a sending opportunity corresponding to a first configuration index;
and the second receiving module is used for receiving the random access signal according to the time offset corresponding to the second configuration index.
7. The relay device according to claim 5 or 6,
any one of the configuration indices corresponding to at least one time period value and/or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
8. The relay device of claim 7,
the time offset and/or the time period value has a granularity of at least one of:
system subframe level, slot level, symbol level.
9. A base station device, for implementing the method of any one of claims 1 to 4, comprising a third sending module and a third receiving module;
the third sending module is configured to send control information to at least 2 relay devices, where the control information includes a configuration index, the configuration index corresponds to a sending opportunity when the relay device sends a random access signal, and configuration indexes of adjacent relay devices are different;
and the third receiving module receives the random access signal according to the sending opportunity corresponding to the configuration index.
10. The base station apparatus of claim 9,
any one of the configuration indices corresponding to at least one time period value and/or at least one time offset value; the time period value and the time offset value are used for determining the sending opportunity.
11. The base station apparatus of claim 10,
the time offset and/or the time period value, granularity, is at least one of:
system subframe level, slot level, symbol level.
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