MULTIPLEXING SUBFRAMES WITH DIFFERENT SUBCARRIER SPACINGS.

Abstract

Methods and apparatus in a fifth-generation wireless communication, including a method given by way of example, in a wireless device, which include receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predefined plurality of uplink access configurations, and transmitting to the wireless communication network according to the identified uplink access configuration.The method given by way of example further comprises, in the same wireless device, the reception, in a first downlink subframe, of a first orthogonal frequency division multiplexing (OFDM) transmission formatted according to a first numerology, and the reception, in a second downlink subframe, of a second OFDM transmission formatted according to a second numerology, the second numerology being different from the first numerology, the first numerology having a first subcarrier spacing and the second numerology having a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing. The invention also relates to variations of this method, to corresponding devices, and to corresponding network-side methods and devices.

Description

Patrick; SACHS, Joachim; SAHLIN, Henrik; SAXENA, Vidit; SEIFI, Nima; SELEN, Yngve (74) Agent: SABA&C0.,TMP (54) Title: MULTIPLEXING SUBFRAMES WITH DIFFERENT SPACINGS SUBCARRIERS. (57) Abbreviation: Methods and apparatus in a fifth-generation wireless communication, comprising a method given by way of example, in a wireless device, which include receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predefined plurality of uplink access configurations, and transmitting to the wireless communication network according to the identified uplink access configuration.The method given by way of example further comprises, in the same wireless device, the reception, in a first downlink subframe, of a first orthogonal frequency division multiplexing (OFDM) transmission formatted according to a first numerology, and the reception, in a second downlink subframe, of a second OFDM transmission formatted according to a second numerology, the second numerology being different from the first numerology, the first numerology having a first subcarrier spacing and the second numerology having a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing. The invention also relates to variations of this method, to corresponding devices, and to corresponding network-side methods and devices.

Claims

DEMANDS 1. A method, in a wireless device, for operation in a wireless communications network and usable for communicating with radio network equipment in the wireless communications network, the method comprising: the reception of a first downlink signal comprising information indicating a plurality of uplink access configurations, each uplink access configuration including a random access configuration; the reception of a second downlink signal including an uplink access configuration index, the use of the uplink access configuration index to identify an uplink access configuration from among the specified plurality of uplink access configurations, and the transmission to the wireless communications network of a random access transmission according to the random access configuration included in the identified uplink access configuration; characterized in that the process further comprises: the reception, in response, in a first downlink subframe, of a first OFDM (Orthogonal Frequency Division Multiplexing) transmission formatted according to a first numerology and the reception, in a second downlink subframe, of a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, in which the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing.

2. P assigned according to claim 1, wherein the method further comprises: the reception, in addition, of disseminated system access information and the use of the disseminated system access information to access the wireless communications network.

3. A method according to claim 1 or 2, further comprising operation in a connected mode during one or more first intervals and operation in a sleep mode during one or more second intervals, wherein said first and second OFDM transmissions are implemented in the connected mode, and wherein said operation in the sleep mode comprises: monitoring signals carrying tracking zone identifiers; the comparison of the monitoring zone identifiers used during said monitoring with a list of monitoring zone identifiers; and the notification of the wireless communication network in response to the determination that a repute tracking zone identifier is not on said list but otherwise the act of refraining from notifying the wireless communication network in response to the receipt of tracking zone identifiers that change.

4. A method according to any one of the preceding claims, wherein said first and second downlink subframes are fed on the same carrier.

5. A method according to any one of the preceding claims, wherein said first and second numerologies comprise subframes of first and second subframe lengths, respectively, the first subframe length differing from the second subframe length.

6. A method according to any one of the preceding claims, wherein subframes of said first and second numerologies comprise first and second predetermined numbers of OFDM symbols, respectively.

7. A method according to any one of the preceding claims, wherein at least one of said first and second numerologies comprises subframes having a length of 250 microseconds or less.

8. A method according to any one of the preceding claims, wherein the method further comprises: requesting additional system information from the wireless communications network; and receiving additional system information from the wireless communications network, in response to said request.

9. Proceeds according to one of the preceding claims, wherein the method further comprises receiving additional system information from the wireless communications network, in a dedicated transmission.

10. A method according to any one of the preceding claims, wherein the method further comprises: the reception, in a first-arrived OFDM symbol of said first or second downlink subframe, of downlink control signaling in a first set of subcarriers of said first-arrived OFDM symbol and of dedicated user data in a second set of subcarriers of said first-arrived OFDM symbol.

11. A method according to any one of the preceding claims, wherein the method further comprises: the transmission of acknowledgment data, ACK, or acknowledgment of receipt negative, NACK, in response to said first OFDM transmission in said first downlink subframe, in a last OFDM symbol of an uplink subframe interval overlapping at least partially said first downlink subframe.

12. A method according to any one of the preceding claims, further comprising receiving a third OFDM transmission formatted according to said first numerology, said third OFDM transmission occupying a transmission time interval, TTI, having a length equal to a plurality of subframes according to said first numerology.

13. A method according to any one of the preceding claims, wherein the method further comprises processing data from the first OFDM transmission using a first layer of media access control protocol, MAC, and processing data from said second OFDM transmission using a second layer of MAC protocol, said first layer of MAC protocol differing from said second layer of MAC protocol, and wherein the method further comprises processing messages received from each of said first and second layers of MAC protocol using a single common layer of radio resource control protocol, RRC.

14. A method according to any one of the preceding claims, further comprising transmission to the wireless communications network using a discrete Fourier transform spreading OFDM transmission, DFTS-OFDM.

15. A method according to any one of the claims previous ones, including in addition: the measurement of a first reference mobility signal on a first received beam; the measurement of a second mobility reference signal on a second received beam, the second mobility reference signal differing from the first mobility reference signal; and the declaration of the measurement results of the said first and second reference mobility signals to the wireless communications network.

16. A method according to any one of the preceding claims, in which said reception of at least one of said first and second OFDM transmissions comprises decoding said at least one of said first and second OFDM transmissions using a polar code.

17. A method according to any one of the preceding claims, in which said reception of at least one of the first and second OFDM transmissions comprises decoding said at least one of the first and second OFDM transmissions using a low-density parity checking code, LDPC.

18. A method according to any one of the preceding claims, in which the method further comprises: receiving signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

19. A method according to any one of the preceding claims, in which the method further comprises: the transmission of signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

20. A method according to one of the preceding claims, wherein the method further comprises: transmission over a physical uplink control channel with the same numerics as over a physical data channel.

21. A method according to one of the preceding claims, wherein the method further comprises: the construction of a random access preamble by repeatedly repeating a short sequence, in which the short sequence has the same length as the length of OFDM symbols used for user data signaling; and the transmission of the random access preamble to the network node equipment.

22. A method according to any one of the preceding claims, wherein the method further comprises: receiving an indication from the radio network equipment stating which Channel State Information Reference Signal (CSI-RS) resources should be used for the measurements 23. A method according to any one of the preceding claims, wherein the method further comprises: operation in a connected mode for one or more first intervals and operation in a sleep mode for one or more second intervals and the reception, when the wireless device is operating in sleep mode, of a paging request from the network node equipment via a central network.

24. A method according to any one of the preceding claims, wherein the method comprises: operation in a connected mode for one or more initial intervals and the operation in a sleep mode for one or more second intervals and upon entering sleep mode, the retention, for the wireless device, of all packet data convergence protocol entities, PDCP, signaling radio carriers, sRB, and resource blocks, RB, and radio resource command UE context identity, RRC, in which the UE context identity RRC was received in an RRC connection establishment procedure.

25. A method according to any one of the preceding claims, wherein the method further comprises: receiving a configuration indicating a delimited set of radio resources within which the wireless device is configured to operate exclusively.

26. A method, in radio network equipment operating in a wireless communications network and usable for communicating with a wireless device in the wireless communications network, the method comprising: the transmission of a first signal downlink including information indicating a plurality of access configurations of uplink, each uplink access configuration including a random access configuration; the transmission of a second downlink signal comprising an uplink access configuration index, ]'uplink access configuration index identifying an uplink access configuration from among the stated plurality of uplink access configurations, and ]the subsequent reception of a random access transmission from a first wireless device according to the random access configuration included in said identified uplink access configuration; characterized in that the method further comprises: the transmission, in response, in a first downlink subframe, of a first OFDM (Orthogonal Frequency Division Multiplexing) transmission formatted according to a first numerology and the transmission, in a second downlink subframe, of a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, wherein the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing.

27. Method according to claim 26, further comprising: the additional dissemination of system access information to allow said wireless device to use the replenished system access information to access the wireless communications network.

28. A method according to any one of claims 26 to 27, wherein said first and second downlink subframes are transmitted on the same carrier.

29. A method according to any one of claims 26 to 28, wherein said transmission of the second downlink signal comprising said uplink access configuration index is implemented by a first instance of radio network equipment, and wherein said transmission of said first and second OFDM transmissions is implemented by a second instance of radio network equipment.

30. A method according to any one of claims 26 to 29, wherein said first and second numerologies comprise subframes of first and second sub-lengths frame, respectively, said first subframe length differing from said second subframe length.

31. Method according to 1, one of claims 26 to 30, in leguel of the subframes of said first and second numerologies comprise first and second predetermined numbers of OFDM symbols, respectively.

32. A method according to any one of claims 26 to 31, wherein at least one of said first and second numerologies comprises subframes having a length of 250 microseconds or less. 33- Method according to one of claims 26 to 32, wherein the method further comprises: the transmission, in a first-arrived OFDM symbol of said first or second downlink subframe, of downlink control signaling in first subcarriers of said first-arrived OFDM symbol and of dedicated user data in second subcarriers of said first-arrived OFDM symbol.

34. A method according to one of claims 26 to 33, wherein the method further comprises: receiving acknowledgment data, ACK, or negative acknowledgment data, NACK, in response to said first OFDM transmission in said first downlink subframe, in a last OFDM symbol of an uplink subframe interval at least partially overlapping said first downlink subframe.

35. A method according to any one of claims 26 to 34, further comprising the transmission of a third OFDM transmission formatted according to said first numerology, said third OFDM transmission occupying an interval of transmission time, TTI, having a length equal to a plurality of subframes according to said first numerology.

36. Method according to claim 29, wherein the transmission of the first downlink signal is implemented by a third instance of radio network equipment.

37. A method according to any one of claims 26 to 36, wherein said transmission of said first and second OFDM transmissions is implemented by a single instance of radio network equipment, wherein the method further comprises data processing for said first OFDM transmission using a first layer of media access control protocol, MAC, and data processing for said second OFDM transmission using a second layer of MAC protocol, said first layer of MAC protocol differing from said second layer of MAC protocol, and wherein the method further comprises message processing to be carried by each of said first and second layers of MAC protocol, using a single common layer of radio resource control protocol, RRC.

38. A method according to any one of claims 26 to 37, including in addition: the provisioning of a fifth wireless device, wherein the provisioning of the fifth wireless device includes the sending of data from said fifth wireless device to a first network node or a first set of network nodes, according to a first network slice identifier associated with said fifth wireless device; and the provisioning of a sixth wireless device, wherein the provisioning of the sixth wireless device includes the sending of data from said sixth wireless device to a second network node or second set of network nodes, according to a second network slice identifier associated with the sixth wireless device, the second network slice identifier differing from the first network slice identifier, and the second network node or second set of network nodes differing from the first network node or first set of network nodes.

39. A method according to any one of claims 26 to 38, wherein the method further comprises: the transmission of signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

40. A method according to any one of claims 26 to 39, wherein the method further comprises: receiving signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

41. A method according to any one of claims 26 to 40, wherein the method further comprises: reception on a physical uplink command channel with the same numerology as on a physical data channel.

42. A method according to any one of claims 26 to 41, wherein the method further comprises: the reception of a random access preamble from a wireless device, wherein the random access preamble consists of a concatenation of short sequences repeated several times, wherein the short sequence has the same length as the length of OFDM symbols used for user data signaling.

43. A method according to any one of claims 26 to 42, wherein the method further comprises: the transmission of an indication to the wireless device indicating which reference signal resources Channel status information, CSI-RS, must be used for measurements.

44. A method according to any one of claims 26 to 43, wherein the method further comprises: the transmission, when a wireless device is operating in a sleep mode, of a radio message request to the wireless device via a central network.

45. A method according to any one of claims 26 to 44, wherein the method further comprises: the transmission of a configuration to the wireless device indicating a delimited set of radio resources in which the wireless device is configured to operate exclusively.

46. ​​Wireless device, comprising a radio frequency circuit and a processing circuit operationally connected to the radio frequency circuit, the wireless device being usable for communicating with radio network equipment in a wireless communications network, wherein the processing circuit is configured to: receive a first downlink signal containing information indicating a plurality of uplink access configurations, each uplink access configuration including a random access configuration; receive a second downlink signal containing an uplink access configuration index, use the uplink access configuration index upstream to identify a link access configuration ascending among the Indicated plurality of uplink access configurations, and transmit to the wireless communications network a random access transmission according to the random access configuration included in the identified uplink access configuration; characterized in that the processing circuit is further configured to; receive, in response, in a first downlink subframe, a first OFDM (Orthogonal Frequency Division Multiplexing) transmission formatted according to a first numerology and receive, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, wherein the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing.

47. Wireless device according to claim 46, wherein said processing circuit is further configured to: receive, in addition, broadcast system access information and use the received system access information to access the wireless communications network.

48. A wireless device according to any one of claims 46 to 47, wherein said processing circuit is configured to operate in a connected mode during one or more first intervals and to operate in a sleep mode during one or more second intervals, such that said first and second OFDM transmissions are implemented in said connected mode, and wherein said processing circuit is configured to, when of operation in said sleep mode: monitor signals carrying tracking zone identifiers; compare the tracking zone identifiers received during said monitoring with a list of tracking zone identifiers; and notify the wireless communication network in response to the determination that a received tracking zone identifier is not on said list but otherwise refrain from notifying the wireless communication network in response to the receipt of tracking zone identifiers that change.

49. Wireless device according to any one of claims 46 to 48, in which said first and second downlink subframes are received on the same carrier.

50. Wireless device according to any one of claims 46 to 49, in which the first and second numerologies comprise subframes of first and second subframe lengths, respectively, the first subframe length differing from the second subframe length.

51. Wireless device according to any one of claims 46 to 50, wherein subframes of said first and second numerologies comprise first and second predetermined numbers of OFDM symbols, respectively.

52. Wireless device according to any one of claims 46 to 51, wherein at least one of said first and second numerologies comprises subframes having a length of 250 microseconds or less.

53. Wireless device according to any one of claims 46 to 52, wherein the processing circuit is further configured for: request additional system information from the wireless communications network; and receive additional system information from the wireless communications network, in response to said request.

54. Wireless device according to any one of claims 46 to 53, wherein the processing circuit is further configured to receive additional system information from the wireless communications network, in a dedicated transmission.

55. Wireless device according to one of claims 46 to 54, wherein said processing circuit is further configured to: receive, in a first-arrived OFDM symbol of said first or second downlink subframe, downlink control signaling in a first set of subcarriers of said first-arrived OFDM symbol and dedicated user data in a second set of subcarriers of said first-arrived OFDM symbol.

56. Wireless device according to any one of claims 46 to 55, wherein said processing circuit is further configured to: transmit acknowledgment data, ACK, or negative acknowledgment data, NACK, in response to said first OFDM transmission in said first downlink subframe, in a last OFDM symbol of an uplink subframe interval overlapping at least partially said first downlink subframe.

57. Wireless device according to any one of claims 46 to 56, wherein said first downlink subframe comprises one or more reference symbols in the first-arriving OFDM symbol of said first downlink subframe downstream, and wherein said processing circuit is further configured to begin decoding said first OFDM transmission in said first downlink subframe before a duration of said first downlink subframe is completed, using a channel estimate based on said reference symbol(s).

58. Wireless device according to any one of claims 46 to 57, wherein said processing circuit is further configured to receive a third OFDM transmission formatted according to said first numerology, said third OFDM transmission occupying a transmission time interval, TTI, having a length equal to a plurality of subframes according to said first numerology.

59. Wireless device according to any one of claims 46 to 58, wherein said processing circuit is further configured to process data from said first OFDM transmission using a first layer of medium access control protocol, MAC, and to process data from said second OFDM transmission using a second layer of MAC protocol, said first layer of MAC protocol differing from said second layer of MAC protocol, and wherein said processing circuit is configured to process messages received from each of said first and second layers of MAC protocol using a single common layer of radio resource control protocol, RRC.

60. Wireless device according to any one of claims 46 to 59, wherein the wireless device is further configured to transmit to the wireless communications network using a discrete Fourier transform spreading OFDM transmission, DFTS-OFDM.

61. Wireless device according to any one of claims 46 to 60, wherein the processing circuit is further configured to: measure a first reference mobility signal on a first received beam; measure a second mobility reference signal on a second fed beam, the second mobility reference signal differing from the first mobility reference signal; and declare the measurement results of the first and second mobility reference signals to the wireless communications network.

62. Wireless device according to any one of claims 46 to 61, wherein said processing circuit is configured to decode at least one of said first and second OFDM transmissions using a polar code.

63. Wireless device according to any one of claims 46 to 62, wherein said processing circuit is configured to decode at least one of said first and second OFDM transmissions using a low-density parity checking code, LDPC.

64. Wireless device according to any one of claims 46 to 63, wherein said processing circuit is configured to receive signals using a hybrid automatic repeat request, HARQ, asynchronous protocol.

65. Wireless device according to any one of claims 46 to 64, wherein said processing circuit is configured to transmit signals using a hybrid automatic repeat request, HARQ, asynchronous protocol.

66. Wireless device according to any one of claims 46 to 65, wherein said processing circuit is configured to transmit on a physical uplink control channel with the same numerology as on a physical data channel.

67. Wireless device according to any one of claims 46 to 66 wherein said processing circuit is configured to construct a random access preamble by repeatedly playing a short sequence, wherein the short sequence has the same length as the length of the OFDM symbols used for user data signaling; and transmit the random access preamble to network node equipment.

68. Wireless device according to one of claims 46 to 67, wherein said processing circuit is configured to receive an indication from the radio network equipment indicating which channel state information reference signal resources, CSÏ-RS, i] are to be used for measurements.

69. Wireless device according to any one of claims 46 to 68, wherein said processing circuit is configured to operate in a connected mode for one or more first intervals and to operate in a sleep mode for one or more second intervals and to receive, when the wireless device is operating in sleep mode, a paging request from network node equipment via a central network.

70. Wireless device according to any one of claims 46 to 69, wherein said processing circuit is configured to operate in a connected mode for one or more initial intervals and to operate in a mode dormant for one or more second intervals and upon entering dormant mode, retain, for the wireless device, all packet data convergence protocol entities, PDCP, signaling radio carriers, SRB, and resource blocks, RB, and radio resource command UE context identity, RRC, in which the RRC UE context identity was received in an RRC connection establishment procedure.

71. Wireless device according to any one of claims 46 to 70, wherein said processing circuit is configured to receive a configuration indicating a delimited set of radio resources in which the wireless device is configured to operate exclusively.

72. A system comprising one or more instances of radio network equipment, each instance of radio network equipment comprising a radio circuit and a processing circuit operationally connected to the radio circuit, the radio network equipment being operable for communicating with a wireless device in a wireless communications network, wherein the processing circuit in the radio network equipment is configured to: transmit a first downlink signal comprising information indicating a plurality of uplink access configurations, each uplink access configuration including a random access configuration; transmit a second downlink signal including a link access configuration index ascending, !'link access configuration index upstream identifying a link access configuration ascending among the indicated plurality of uplink access configurations, and subsequently receive a random access transmission from a first device wireless according to the random access configuration Included in the identified uplink access configuration; characterized in that the processing circuit in the radio network equipment is further configured to: transmit, in response, in a first downlink subframe, a first OFDM (Orthogonal Frequency Division Multiplexing) transmission formatted according to a first numerology and transmit, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, in which the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing.

73. System according to claim 72, wherein said processing circuit in said radio network equipment is configured to broadcast, additionally, system access information to access the wireless communications network.

74. System according to claim 72 or 73, wherein said processing circuit in said radio network equipment is configured to transmit said first and second downlink subframes on the same carrier.

75. A system according to any one of claims 72 to 74, wherein the processing circuit of a first instance of said radio network equipment is configured to transmit said second downlink signal comprising said uplink access configuration index, and wherein the processing circuit a second instance of said radio network equipment is configured to transmit said first and second OFDM transmissions.

76. System according to any one of claims 72 to 75, wherein said first and second numerologies comprise subframes of first and second subframe lengths, respectively, the first subframe length differing from the second subframe length.

77. System according to any one of claims 72 to 76, wherein subframes of said first and second numerologies comprise first and second predetermined numbers of OFDM symbols, respectively.

78. System according to any one of claims 72 to 77, wherein at least one of said first and second numerologies comprises subframes having a length of 250 microseconds or less.

79. A system according to any one of claims 72 to 78, wherein said processing circuit in said radio network equipment is configured to: transmit, in a first-arrive OFDM symbol of said first or second downlink subframe, downlink control signaling in a first set of subcarriers of said first-arrive OFDM symbol and dedicated user data in a second set of subcarriers of said first-arrive OFDM symbol.

80. A system according to one of claims 72 to 79, wherein said processing circuit in said radio network equipment is configured to: receive acknowledgment data, ACK, or negative acknowledgment data, NACK, in response to said first OFDM transmission in said first downlink subframe, in a last OFDM symbol of an uplink subframe interval overlapping at least partially said first downlink subframe.

81. System according to any one of claims 72 to 80, wherein said processing circuit in said radio network equipment is configured to transmit a third OFDM transmission formatted according to said first numerology, the third OFDM transmission occupying a transmission time interval, TTI, having a length equal to a plurality of subframes according to said first numerology.

82. System according to claim 75, wherein the processing circuit of a third instance of radio network equipment is configured to transmit said first downlink signal.

83. System according to any one of claims 72 to 82, wherein the processing circuit of an instance of said radio network equipment is configured to implement said first and second OFDM transmissions, and to process data for said first OFDM transmission using a first layer of medium access control protocol, MAC, and to process data for said second OFDM transmission using a second layer of MAC protocol, the first layer of MAC protocol differing from the second layer of MAC protocol, and to process messages to be carried by each of said first and second layers of MAC protocol, using a single common layer of radio resource control protocol, RRC.

84. A system according to any one of claims 72 to 83, wherein the processing circuit of at least one instance of said radio network equipment is configured to: to serve a fifth wireless device, such that the service of the fifth wireless device includes sending data from said fifth wireless device to a first network node or a first set of network nodes, according to a first network slice identifier associated with said fifth wireless device; and to serve a sixth wireless device, such that the service of the sixth wireless device includes sending data from said sixth wireless device to a second network node or a second set of network nodes, according to a second network slice identifier associated with said sixth wireless device, the second network slice identifier differing from the first network slice identifier, and the second network node or the second set of network nodes differing from the first network node or the first set of network nodes.

85. A system according to any one of claims 72 to 84, wherein the processing circuit of at least one instance of said radio network equipment is configured to: transmit signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

86. A system according to any one of claims 72 to 85, wherein the processing circuit of at least one instance of said radio network equipment is configured to: receive signals using a hybrid automatic repeat request protocol, HARQ, asynchronous.

87. System according to any one of claims 72 to 86, wherein the processing circuit of at least one instance of said radio network equipment is configured to; receive on a physical uplink command channel with the same numerology as on a physical data channel.

88. A system according to any one of claims 72 to 87, wherein the processing circuit of at least one instance of said radio network equipment is configured to: receive a random access preamble from a wireless device, wherein the random access preamble consists of a concatenation of repeatedly repeated short sequences, wherein the short sequence has the same length as the length of OFDM symbols used for user data signaling.

89. A system according to any one of claims 72 to 88, wherein the processing circuit of at least one instance of said Radio network equipment is configured to: transmit an indication to the wireless device indicating which information reference signal resources channel state. CSI-RS, it must be used for measurements.

90. System according to any one of claims 62 to 89, wherein the processing circuit of at least one instance of said Radio network equipment is configured to: transmit, when a wireless device is operating in a sleep mode, a paging request to the wireless device via a central network.

91. A system according to any one of claims 72 to 90, wherein the processing circuit of at least one instance of said radio network equipment is configured to: transmits a configuration to the wireless device indicating a delimited set of radio resources in which the wireless device is configured to operate exclusively.

92. A computer program comprising instructions which, when executed on at least one processor, cause at least one processor to perform the method according to any one of claims 1 to 25 and of the 10 demands, numbers 26 to 45.

93. Computer-readable storage medium containing the computer program according to claim 92.