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CN-122027102-A - Communication method, device, program product and medium

CN122027102ACN 122027102 ACN122027102 ACN 122027102ACN-122027102-A

Abstract

A communication method, apparatus, program product and medium in which a terminal apparatus transmits a first message including a first demodulation reference signal, an index of which is determined based on an identity of the terminal apparatus. Because the information of the first demodulation reference signal is determined based on the identification of the terminal device, the probability that different terminal devices select different demodulation reference signals is higher, the probability of collision of the demodulation reference signals of different terminal devices is reduced, and the reliability of sending the first message and the success rate of decoding the first message by the network device are improved.

Inventors

  • CHEN YING
  • XU BIN
  • YANG RUONAN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (20)

  1. 1. A method of communication, the method comprising: a first message is transmitted on a first resource, the first message including a first demodulation reference signal, information of the first demodulation reference signal being determined based on an identity of a terminal device.
  2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The information of the first demodulation reference signal indicates a port of the first demodulation reference signal or, The information of the first demodulation reference signal indicates a first sequence, which is used to determine the first demodulation reference signal.
  3. 3. The method according to claim 1 or 2, characterized in that the first message is message 3 or message a in a random access procedure.
  4. 4. A method according to any of claims 1-3, characterized in that the information of the first demodulation reference signal is determined based on the identity of the terminal device, comprising that the information of the first demodulation reference signal and the identity of the terminal device satisfy the following relation: Y=C1*(X mod S)+U1 wherein Y represents a port of the first demodulation reference signal, an index of a port of the first demodulation reference signal, or an index of a first sequence, C1 is a constant, X represents an identification of the terminal device, mod represents a remainder operation, S represents a maximum number of supported orthogonal demodulation reference signals, U1 represents a first value, the port of the first demodulation reference signal or the first sequence is indicated by information of the first demodulation reference signal, and the first sequence is used for determining the first demodulation reference signal.
  5. 5. The method of any of claims 1-4, wherein the first resource is a resource in a first subset of resources, the method further comprising: the first message is repeatedly sent at a second resource comprised in the first subset of resources or, And sending a second message to a second resource included in the first resource subset, wherein the first message is further used for indicating the second resource or a first mode, and the first mode indicates the relative position relationship between the first resource and the second resource.
  6. 6. The method of claim 5, wherein the method further comprises: A third message is detected within a second subset of resources, the third message being for responding to the second message or the first message, wherein a first resource unit within the second subset of resources is associated with a second resource unit within the first subset of resources.
  7. 7. The method of claim 6, wherein the first resource unit is a starting resource unit of the second subset of resources and the second resource unit is an ending resource unit of the first subset of resources.
  8. 8. The method according to any of claims 5-7, wherein the first subset of resources is one of a first set of resources of a plurality of sets of resources, the first set of resources being related to an identity of the terminal device.
  9. 9. The method of claim 8, wherein the first set of resources is associated with an identity of the terminal device, comprising the first set of resources satisfying the relationship: G=C2*(X mod K)+U2 Wherein G represents an index of the first resource set, C2 represents a constant, X represents a multiplication, X represents an identification of the terminal device, mod represents a remainder operation, K represents a second value, and U2 represents a third value.
  10. 10. The method according to any one of claims 1 to 9, wherein, The first message further includes M bits, where the M bits and the N bits are used to indicate an identifier of the terminal device, and both the M and the N are positive integers, where: The N bits are associated with an index of the first demodulation reference signal, or P bits of the N bits are related to an index of the first demodulation reference signal, and the remaining bits of the N bits other than the P bits are related to a first set of resources, the first set of resources including the first resource, the P being a positive integer.
  11. 11. A method of communication, the method further comprising: A first message is received at a first resource, the first message including a first demodulation reference signal, information of the first demodulation reference signal being related to an identity of a first terminal device.
  12. 12. The method of claim 11, wherein the step of determining the position of the probe is performed, The information of the first demodulation reference signal indicates a port of the first demodulation reference signal or, The information of the first demodulation reference signal indicates a first sequence, which is used to determine the first demodulation reference signal.
  13. 13. The method according to claim 11 or 12, characterized in that the first message is message 3Msg3 or message AmsgA in a random access procedure.
  14. 14. The method according to any of claims 11-13, wherein the information of the first demodulation reference signal is related to an identity of a first terminal device, comprising that the information of the first demodulation reference signal and the identity of the first terminal device satisfy the following relation: Y=C1*(X mod S)+U1 Wherein Y represents a port of the first demodulation reference signal, an index of a port of the first demodulation reference signal, or an index of a first sequence, C1 is a constant, X represents an identification of the first terminal device, mod represents a remainder operation, S represents a maximum number of supported orthogonal demodulation reference signals, U1 represents a first value, the port of the first demodulation reference signal or the first sequence is indicated by information of the first demodulation reference signal, and the first sequence is used for determining the first demodulation reference signal.
  15. 15. The method of any of claims 11-14, wherein the first resource is a resource in a first subset of resources, the method further comprising: Receiving the first message at a second resource comprised by the first subset of resources; and receiving a second message at a second resource included in the first resource subset, wherein the first message is further used for indicating the second resource or a first mode, and the first mode indicates the relative position relationship between the first resource and the second resource.
  16. 16. The method of claim 15, wherein the method further comprises: And sending a third message in the second resource subset, wherein the third message is used for responding to the second message or the third message is used for responding to the first message, and a first resource unit of the second resource subset is related to a second resource unit of the first resource subset.
  17. 17. The method of claim 16, wherein the first resource unit is a starting resource unit of the second subset of resources and the second resource unit is an ending resource unit of the first subset of resources.
  18. 18. The method according to any of claims 15-17, wherein the first subset of resources is one of a first set of resources of a plurality of sets of resources, the first set of resources being related to an identity of the first terminal device.
  19. 19. The method of claim 18, wherein the first set of resources is associated with an identity of the first terminal device, comprising the first set of resources satisfying the relationship: G=C2*(X mod K)+U2 wherein G represents an index of the first resource set, C2 represents a constant, X represents a multiplication, X represents an identification of the first terminal device, mod represents a remainder operation, K represents a second value, and U2 represents a third value.
  20. 20. The method according to any one of claims 15-19, further comprising: Receiving a fourth message at the second resource, the fourth message comprising a second demodulation reference signal, the information of the second demodulation reference signal being related to the identity of a second terminal device; Decoding the fourth message based on the second message and the second demodulation reference signal.

Description

Communication method, device, program product and medium Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, program product, and medium. Background The terminal device may access the network through a network device (e.g., a base station), after which the network may provide services to the terminal device. When a terminal device communicates with a network device, if a plurality of terminal devices transmit messages including corresponding demodulation reference signals (demodulation REFERENCE SIGNAL, DMRS) having the same sequence to the network device on the same resource, the network device may not be able to distinguish between messages of different terminal devices. Disclosure of Invention The application provides a communication method, a device, a program product and a medium, which are used for reducing the probability that different terminal devices adopt the same DMRS. In a first aspect, an embodiment of the present application provides a communication method. The method can be applied to the terminal apparatus side. The terminal device side may be the terminal device itself (or referred to as a terminal or a terminal apparatus), or a module in the terminal device, or a logic module or software capable of realizing part or all of the functions of the terminal device. The module in the terminal device is, for example, a processor, a communication module, a circuit or a chip responsible for a communication function, or the like in the terminal device. A chip such as a modem (modem) chip, or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip containing a modem core, etc. For convenience of description, the method is described below by taking a terminal apparatus as an example. The method includes transmitting a first message at a first resource, the first message including a first DMRS, information of the first DMRS being determined based on an identity of the terminal device. Or the method may also be described as determining information for the first DMRS based on the identity of the terminal device and transmitting a first message on the first resource, the first message including the first DMRS. The first message is, for example, a message in a Random Access (RA) procedure, such as message 3 (message 3, msg 3), or message a (message a, msgA), which is not specifically limited. The first DMRS may be used to demodulate data in the first message. The information of the first DMRS may be used to determine what DMRS or sequence or DMRS port is adopted by the terminal device. The information such as the first DMRS may indicate the first sequence, e.g., the information of the first DMRS may include an identification or index of the first sequence. For another example, the information of the first DMRS may indicate the first DMRS port, e.g., the information of the first DMRS may include a port number or index of the first DMRS port, etc. The information of the first DMRS is determined based on the identifier of the terminal device, and includes, for example, that the information of the first DMRS is obtained by calculating part or all of information in the identifier of the terminal device, or that the information of the first DMRS is obtained by calculating part or all of bits in a bit sequence corresponding to the identifier of the terminal device. The bit sequence of the identifier of the terminal device may refer to a binary sequence corresponding to the identifier of the terminal device. The manner in which the terminal device operates the identifier of the terminal device or the bit sequence may be preconfigured in the terminal device, may be predefined by a protocol, may be determined by negotiation of the terminal device with the network device, or may be configured by the network device to the terminal device. The embodiment of the application provides a method for determining information of a DMRS according to the identification of a terminal device, and different terminal devices can determine the information of the DMRS based on the respective identifications, which is beneficial to enabling different terminal devices to select different DMRSs, reducing the probability that different terminal devices select the same DMRS, reducing the situation that messages of different terminal devices comprise the same DMRS, and being beneficial to distinguishing messages from different terminal devices by a network device. In a possible implementation manner, the information of the first demodulation reference signal is determined based on the identification of the terminal device, and the information of the first demodulation reference signal and the identification of the terminal device meet the following relation that Y=C1 (X mod S) +U1, wherein Y represents a port of the first demodulation reference signal, an index of a port of the first demodulation reference signal or an